| Rails doesn't update nested attributes Posted: 13 Sep 2016 07:42 AM PDT I create an application, which is basically a character creator for an RPG with interactive and dynamic forms. I use Rails 5.0.0.1, and I cannot update my form properly. The base model updates well, but all nested don't. So, I have class Character < ApplicationRecord has_many :attr4characters, autosave: true accepts_nested_attributes_for :attr4characters, allow_destroy: true end
and class Attr4character < ApplicationRecord belongs_to :character end
which represent a character and a set of his attributes. Each record in Attr4character is a different attribute. The Show view is simple: ... <div class="field"> <%= f.label :description %> <%= f.text_area :description %> </div> <div class="field"> <%= f.label :character_type %> <%= f.select(:character_type, options_for_select(["Zhong Lung", "Shih", "Hsien", "Garou", "Technocrat"])) %> </div> <% f.object.attr4characters.each do |attr| %> <%= f.fields_for attr do |attr_f| %> <div class="field"> <%= attr_f.label "Field name" %> <%= attr_f.text_field :field_name %> </div> <div class="field"> <%= attr_f.label "Field value" %> <%= attr_f.text_field :field_value %> </div> <% end %> <% end %> <div class="actions"> <%= f.submit %> </div> ...
And finally my characters_controller: def update respond_to do |format| if @character.update(character_params) format.html { redirect_to @character, notice: 'Character was successfully updated.' } format.json { render :show, status: :ok, location: @character } else format.html { render :edit } format.json { render json: @character.errors, status: :unprocessable_entity } end end end private def set_character @character = Character.find(params[:id]) end def character_params params.require(:character).permit(:id, :name, :player, :description, :character_type, attr4characters_attributes: [:id, :character_id, :field_name, :field_value]) end
So, I have a form, which correctly display a character and all set of his attributes. When I update a character field (like :description), it is normally updated. When I update any nested field, Rails says that character is successfully updated and nothing changes! I searched with Google, and I found a lot of problems with nested attributes in Rails forms, but none of the recipes worked for me. I even encountered opinions that it is a bug in Rails 4, but I use 5th version... Please, advice on the topic. Is it a bug really? Or am I doing something wrong? I'm new on Rails, so I don't exclude that possibility. :) By the way, in the server's log I found that there is warning about attr4characters. Processing by CharactersController#update as HTML Parameters: {"utf8"=>"\u2713", "authenticity_token"=>"xeYyIRc13YiOk29v18rFM6Oh5OHRRuPpSKEQuIHE/U4uhANEF7TwMp8mb6hv6L7mUAm5MngAuyFayHcWV/Vvbw==", "character"=>{"name"=>"Ray", "player"=>"111", "description"=>"A Zhong Lung suicider", "character_type"=>"Hsien", "attr4character"=>{"field_name"=>"Gift1", "field_value"=>"Sense Wyrm"}}, "commit"=>"Update Character", "id"=>"3"} Character Load (0.2ms) SELECT "characters".* FROM "characters" WHERE "characters"."id" = ? LIMIT ? [["id", 3], ["LIMIT", 1]] Unpermitted parameter: attr4character (0.1ms) begin transaction SQL (0.9ms) UPDATE "characters" SET "character_type" = ?, "updated_at" = ? WHERE "characters"."id" = ? [["character_type", "Hsien"], ["updated_at", 2016-09-13 14:39:10 UTC], ["id", 3]] (24.3ms) commit transaction
But attr4characters are permitted in the characters_controller... |
| I wan to upload image using papeclip but getting an error unknown attribute 'image' for Pic Posted: 13 Sep 2016 07:38 AM PDT My pic_controller.rb image attribute exits in User Model still getting an error ActiveRecord::UnknownAttributeError in PicsController#create class PicsController < ApplicationController before_action :find_pic ,only: [:show,:edit,:update,:destroy] def index @pics = Pic.all.order("created_at DESC") end def new @pic = current_user.pics.build end def destroy @pic.destroy redirect_to root_path end def show end def edit end def update if @pic.update(pics_params) redirect_to @pic, notice: "Congratz Pic is Updated" else render 'edit' end end def create @pic =current_user.pics.build(pics_params) if @pic.save redirect_to @pic, notice: "Yes it was created" else render 'new' end end private def pics_params params.require(:pic).permit(:title,:description,:image) end def find_pic @pic = Pic.find(params[:id]) end end
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| How to use helper methods to access elements from options_from_collection_for_select Posted: 13 Sep 2016 07:31 AM PDT The docs state options_from_collection_for_select(collection, value_method, text_method, selected = nil) has to have elements that respond_to? the value_method and the text_method. What if my collection is an array of hashes and I need to use some helper methods for value_method and text_method? For example, collection = [{ model: "LaF" year: 2016, mileage: 1230 }, { model: "P1", year: 2015, mileage: 1311 }, { model: "918", year: 2015, mileage: 2448 }
] For example: I want to be able to use the I18n.interpolate("car.mileage",mileage: element[:mileage]), method on the model key of each element. TL;DR: How to call hash key methods or other helper methods on options_from_collection_for_select elements? |
| ActiveRecord only saves submission for one id Posted: 13 Sep 2016 07:40 AM PDT I'm trying to implement permissions and roles in a rails application. I have a role model and a permission model with a has_and_belongs_to_many relationship. Inside the role model i have a method with which i can add permissions to roles and it works but active record only saves the permission with the id = 1. In the console it says that the permission is assigned but when i type Role.first.permissions it doesn't show anything. I really don't understand what i am doing wrong since i also have the user model linked to the permission model in the same way, since i want to also be able to override the roles permissions on each individual user and there it works for every permission. Maybe this double linkage between permissions, roles and users is causing the problem? Here is my role.rb: class Role < ActiveRecord::Base has_and_belongs_to_many :permissions, join_table: 'roles_permissions', association_foreign_key: 'role_id' has_many :users def add_permission(perm_id) self.permissions << Permission.find(perm_id) end def remove_all_permissions self.permissions.each do |i| i.delete(Permission.all) end end def remove_permission(id) self.permissions.delete(Permission.find(id)) end end
Here is my user.rb: class User < ActiveRecord::Base has_and_belongs_to_many :permissions, association_foreign_key: 'permission_id', join_table: 'users_permissions' belongs_to :role def add_permission(perm_id) self.permissions << Permission.find(perm_id) end def remove_all_permissions self.permissions.each do |i| i.delete(Permission.all) end end def remove_permission(id) self.permissions.delete(Permission.find(id)) end end
And here is my permission.rb: class Permission < ActiveRecord::Base has_and_belongs_to_many :roles, join_table: 'roles_permissions' has_and_belongs_to_many :users, join_table: 'users_permissions' end
Here is the console log for the first permission: irb(main):008:0> Role.first.add_permission(1) Role Load (0.6ms) SELECT "roles".* FROM "roles" ORDER BY "roles"."id" ASC LIMIT 1 Permission Load (0.6ms) SELECT "permissions".* FROM "permissions" WHERE "permissions"."id" = $1 LIMIT 1 [["id", 1]] (0.1ms) BEGIN SQL (0.2ms) INSERT INTO "roles_permissions" ("role_id") VALUES ($1) [["role_id", 1]] (0.5ms) COMMIT Permission Load (0.3ms) SELECT "permissions".* FROM "permissions" INNER JOIN "roles_permissions" ON "permissions"."id" = "roles_permissions"."role_id" WHERE "roles_permissions"."role_id" = $1 [["role_id", 1]] => #<ActiveRecord::Associations::CollectionProxy [#<Permission id: 1, name: "do_everything", created_at: "2016-09-13 13:45:54", updated_at: "2016-09-13 13:45:54", description: "God permission", role_id: nil>]> irb(main):009:0> reload! Reloading... => true irb(main):010:0> Role.first.permissions Role Load (0.2ms) SELECT "roles".* FROM "roles" ORDER BY "roles"."id" ASC LIMIT 1 Permission Load (0.2ms) SELECT "permissions".* FROM "permissions" INNER JOIN "roles_permissions" ON "permissions"."id" = "roles_permissions"."role_id" WHERE "roles_permissions"."role_id" = $1 [["role_id", 1]] => #<ActiveRecord::Associations::CollectionProxy [#<Permission id: 1, name: "do_everything", created_at: "2016-09-13 13:45:54", updated_at: "2016-09-13 13:45:54", description: "God permission", role_id: nil>]
Here is the log for another permission: irb(main):018:0> Role.first.add_permission(10) Role Load (0.6ms) SELECT "roles".* FROM "roles" ORDER BY "roles"."id" ASC LIMIT 1 Permission Load (0.4ms) SELECT "permissions".* FROM "permissions" WHERE "permissions"."id" = $1 LIMIT 1 [["id", 10]] (0.1ms) BEGIN SQL (0.1ms) INSERT INTO "roles_permissions" ("role_id") VALUES ($1) [["role_id", 10]] (0.8ms) COMMIT Permission Load (0.2ms) SELECT "permissions".* FROM "permissions" INNER JOIN "roles_permissions" ON "permissions"."id" = "roles_permissions"."role_id" WHERE "roles_permissions"."role_id" = $1 [["role_id", 1]] => #<ActiveRecord::Associations::CollectionProxy [#<Permission id: 10, name: "view_projects", created_at: "2016-09-13 13:45:54", updated_at: "2016-09-13 13:45:54", description: "Ability to view projects", role_id: nil>]> irb(main):019:0> Role.first.permissions Role Load (1.3ms) SELECT "roles".* FROM "roles" ORDER BY "roles"."id" ASC LIMIT 1 Permission Load (0.5ms) SELECT "permissions".* FROM "permissions" INNER JOIN "roles_permissions" ON "permissions"."id" = "roles_permissions"."role_id" WHERE "roles_permissions"."role_id" = $1 [["role_id", 1]] => #<ActiveRecord::Associations::CollectionProxy []>
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| The asset pipeline is currently disabled in this application. xray-rails Posted: 13 Sep 2016 07:25 AM PDT I am getting the following error when I am adding xray-rails in my Gemfile The asset pipeline is currently disabled in this application. Either convert your application to use the asset pipeline, or remove xray-rails from your Gemfile. - ruby: ruby-2.2.4
- rails: 4.2.6
Gemfile ... gem 'rails', '4.2.6' ... group :development do gem 'xray-rails', '0.1.17' end ...
This is the log $ rails s => Booting WEBrick => Rails 4.2.6 application starting in development on http://localhost:3000 => Run `rails server -h` for more startup options => Ctrl-C to shutdown server Exiting /home/deepak/.rvm/gems/ruby-2.2.4/gems/xray-rails-0.1.17/lib/xray/engine.rb:101:in `ensure_asset_pipeline_enabled!': xray-rails requires the Rails asset pipeline. (RuntimeError) The asset pipeline is currently disabled in this application. Either convert your application to use the asset pipeline, or remove xray-rails from your Gemfile. from /home/deepak/.rvm/gems/ruby-2.2.4/gems/xray-rails-0.1.17/lib/xray/engine.rb:10:in `block in <class:Engine>' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `instance_exec' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/initializable.rb:30:in `run' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/initializable.rb:55:in `block in run_initializers' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:226:in `block in tsort_each' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:348:in `block (2 levels) in each_strongly_connected_component' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:429:in `each_strongly_connected_component_from' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:347:in `block in each_strongly_connected_component' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:345:in `each' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:345:in `call' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:345:in `each_strongly_connected_component' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:224:in `tsort_each' from /home/deepak/.rvm/rubies/ruby-2.2.4/lib/ruby/2.2.0/tsort.rb:203:in `tsort_each' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/initializable.rb:54:in `run_initializers' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/application.rb:352:in `initialize!' from /home/deepak/sample/blog/config/environment.rb:5:in `<top (required)>' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require' from /home/deepak/sample/blog/config.ru:3:in `block in <main>' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/builder.rb:55:in `instance_eval' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/builder.rb:55:in `initialize' from /home/deepak/sample/blog/config.ru:in `new' from /home/deepak/sample/blog/config.ru:in `<main>' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/builder.rb:49:in `eval' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/builder.rb:49:in `new_from_string' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/builder.rb:40:in `parse_file' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/server.rb:299:in `build_app_and_options_from_config' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/server.rb:208:in `app' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/server.rb:61:in `app' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/rack-1.6.4/lib/rack/server.rb:336:in `wrapped_app' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/server.rb:139:in `log_to_stdout' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/server.rb:78:in `start' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:80:in `block in server' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in `tap' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:75:in `server' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:39:in `run_command!' from /home/deepak/.rvm/gems/ruby-2.2.4/gems/railties-4.2.6/lib/rails/commands.rb:17:in `<top (required)>' from bin/rails:4:in `require' from bin/rails:4:in `<main>'
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| Should one use seperated seed files or fixtures for database? (Rails) Posted: 13 Sep 2016 07:18 AM PDT Up until now i've been using seeds (rake db:seed) to populate database. And i've split them apart, meaning, first i have the essential seeds (that are required for app to properly work), then i have separate code, for "development" environment, that adds users, and any other models, for easy testing. In live environment they are not run.. it usually looks something like so: #seeds.rb # essential data User.create(admin: true, ..) # admin user # development data unless Rails.env.production? # fill models with data, for easy testing, like products, there settings, etc.. # note that, i sometimes use faker here, for emails, nicknames, etc.. # this part is for creating stuff, like appointments or activities by users, like "likes", "shares", "comments", etc.. end
Is this a good approach, or should i use fixtures to add data (that is used in every environment, except production? Note that i dont have tests. |
| Conversion error thrown, but only from rake task Posted: 13 Sep 2016 07:13 AM PDT I'm having great difficulty with a piece of Rails code in which I'm writing data to a file using csv. This block: CSV.open(filename, "w", :force_quotes => true, :write_headers => true) do |csv| for values in data csv << values.map{|v| v.try(:to_s).try(:encode, "iso-8859-1").try(:force_encoding, "utf-8") } end end
throws the following error: #<Encoding::UndefinedConversionError: "\xC2" to UTF-8 in conversion from ASCII-8BIT to UTF-8 to ISO-8859-1>
The data in values is coming from a database. The offending values is: ["Adjustable; adjustment range: camber: \xC2\xB13.0\xC2\xB0"]
What I can't figure out is, it's only choking when this program is run from a rake task. If I set up a console session with the same variables and run that block of code, that text is converted to: ["Adjustable; adjustment range: camber: ±3.0°"]
and written to a file successfully. What is different about this running through a rake task versus the console? |
| mongoid `group by` query Posted: 13 Sep 2016 07:13 AM PDT In my rails application, there are two mongoid models which have a one-to-many relationship. I'm able to pick a selection of milestone ids and find all the Steps that belong to each milestone, but I need to group these steps or only return the steps from the latest milestone Steps if there are multiple. Milestones are order by position and Duplicate steps have the same step_id ids = Milestones.where({'position' => { '$lte' => position }}).pluck(:id) @steps= Steps.any_of({milestone_id: {"$in" => ids}, order_by: { milestone_id: ids }})
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| How can I minify and concatenate a dir full of JavaScript files? Posted: 13 Sep 2016 07:03 AM PDT I'm working on a legacy Ruby on Rails 4 codebase. It contains in assets/javascripts well over 100 .js files. In production mode, it isn't so bad because the Rails Asset Pipeline minifies them and concatenates them into one file. But in development, page refreshes take an extremely long time. I want to compile (minify and concatenate) only a specific subdir (recursively) of JavaScript files in development mode. Is there some tool I can point at a dir and output one minified .js file? Ideally, this would be something that could watch a dir and recompile on changes. I suspect that maybe Browserify or Webpack might be able to do that, but it isn't obvious to me from the docs how it would work in practice. |
| Rails: How to display Font Awesome icons on PDF Posted: 13 Sep 2016 06:38 AM PDT I use Font Awesome icons in some view in my Rails app, such as <i class="fa fa-male fa-fw" aria-hidden="true"></i>. Now I'd like to generate PDF file, so I am trying to use PDFKit. The following error was displayed when I click the link for PDF. /usr/local/rvm/gems/ruby-2.3.0/gems/wkhtmltopdf-0.1.2/bin/wkhtmltopdf_linux_386: error while loading shared libraries: libfontconfig.so.1: cannot open shared object file: No such file or directory Completed 500 Internal Server Error in 1123ms (ActiveRecord: 4.0ms) Completed 500 Internal Server Error in 1123ms (ActiveRecord: 4.0ms) RuntimeError (command failed (exitstatus=0): /usr/local/rvm/gems/ruby-2.3.0/bin/wkhtmltopdf --encoding UTF-8 --page-size A4 --margin-top 0.25in --margin-right 1in --margin-bottom 0.25in --margin-left 1in - -): app/controllers/schedules_controller.rb:42:in `block (2 levels) in show' app/controllers/schedules_controller.rb:29:in `show'
I assume it may cause Font Awesome icons are used because libfontconfig error is displayed. schedules\show.html.erb <% provide(:title, @schedule.title) %> <%= render @schedules %>
schedules\ _schedule.html.erb ... <%= link_to "PDF", schedule_path(schedule.id, format: "pdf"), class: "btn btn-sm btn-default" %> ...
schedules_controller.rb ... respond_to do |format| format.html # show.html.erb format.pdf do html = render_to_string template: "schedules/show" pdf = PDFKit.new(html, encoding: "UTF-8") send_data pdf.to_pdf, filename: "#{@scheudles.id}.pdf", type: "application/pdf", disposition: "inline" end end ...
Line 42 in app/controllers/schedules_controller.rb:42:in block (2 levels) in show' is send_data pdf.to_pdf in the controller. It would be appreciated if you could give me how to solve this error or a simpler technique to generate PDF. (it's ok to try in a different way (not PDFkit)) |
| Trying to add a custom folder to assets path Posted: 13 Sep 2016 07:06 AM PDT I'm trying to add a custome folder to the assets path: module MyApp class Application < Rails::Application config.assets.paths << Rails.root.join("something....") # .... config.assets.paths << Rails.root.join("app", "my_folder1", "fonts")
I've restarted my app and when go directly to http://localhost:3000/my_folder1/fonts/my_font1.ttf or http://localhost:3000/my_folder1/my_font1.ttf in a browser, I get the error 404. Why? How to fix it? Note, it's in the folder "my_folder1" on purpose. |
| Rails asset pipeline require from public folder? Posted: 13 Sep 2016 07:15 AM PDT Is this a good practice to require assets located under public folder? e.g. I have lots of javascript under public/mythirdparyjs folder and I want to make these javascript files available for only specific page, what will be the best way to do this? |
| Ruby on rails confirm on submit tag with condition Posted: 13 Sep 2016 06:30 AM PDT On my edit page I will need to make a confirm box pop up if you try to set the end date before the start date. I have a submit button, but need to get a confirm box coming up when the button is pressed but only if you have moved the end date before the start date. If you have not moved the end date before the start date it will not pop up. I have so far used <%=submit_tag "#{@record.id ? _('Save') : _('Create')}", :class=>"btn primary med", data: {:confirm => "Are you sure?"} %>
but that doesn't do anything at all. |
| Belongs to many association? Posted: 13 Sep 2016 06:42 AM PDT I guess this is a pretty conceptual question. I'm looking through the possible associations available through Rails, but cannot seem to wrap my head around how to build a "belongs_to_many" and "has_many" association. Specifically, I want readers to have many books, and each book to belong to many readers. The closest I can find is the "has_many_and_belongs_to" association, but based on all of the examples I found, it is not exactly accurate. Likewise, according to the documentation, the "belongs to" and "has many" association is meant as a one to many. Is there an association available that matches a belongs to many style or some sort of model structure I could use? |
| line height not affecting anything in my app Posted: 13 Sep 2016 06:25 AM PDT I have a form like below in my rails app <p class='field'> <div class = "form-group"> <div class = "col-sm-3 mobile-label" > <%= form.label :loyalty%> <%=image_tag "qun1.png" ,:style=>"width: 15px; display:inline-block", 'data-toggle'=>"modal", 'data-target'=>"#myModal1" %> </div> <div class="col-sm-9"> <%= form.text_field :coupon_code, :class => 'form-control col-sm-9' %> <%= button_tag "Apply", class: 'btn btn-lg btn-success primary payment-code col-sm-3 ',id: 'apcode' %> </div> </div> </p> <p class='fild> <div class = "form-group"> <div class = "col-sm-3 mobile-label" > <%= form.label :coupon_code %> </div> <div class="col-sm-9"> <%= form.text_field :coupon_code, :class => 'form-control col-sm-9 ' %> <%= button_tag "Apply", class: 'btn btn-lg btn-success primary payment-code col-sm-3 ',id: 'apcode' %> </div> </div> </p>
The result which I am getting is, there are no gap between the label.textfield and button element in both the form groups. When I am giving line-height:30px; to my label, It completely breaks. Anything less than that is not affecting anything. Here's the somewhat similar fiddle Please help. |
| How to prevent child record from being added to the parent when there is validation error Posted: 13 Sep 2016 06:08 AM PDT I am studying ruby on rails with a parent child model relationship. In the parent show page, I have a table that lists the child records for this parent and a form to add new child record. The problem is, when I hit the submit button, the table displays a new blank row. How can I prevent this? Here is my controller code: def create @parent = Parent.find(params[:parent_id]) @parent.children.create(child_params) if @parent.valid? redirect_to parent_path(@parent) else render 'parents/show' end end
I have tried creating the Child model first instead of adding to the parent directly but it seems counter intuitive and I ran into issues with the validation. |
| Get specific user from many to many associations Posted: 13 Sep 2016 05:59 AM PDT I have many to many association through UserTask table. I need to get user with type creator from task (task.creator). It should be like task.user_tasks.where(user_type: 0) but with rails associations. Is it possible? Here is my User model class User < ApplicationRecord has_many :user_tasks, foreign_key: 'user_email', primary_key: 'email' has_many :tasks, through: :user_tasks end
Here is my Task model class Task < ApplicationRecord has_many :user_tasks, dependent: :destroy has_many :users, through: :user_tasks end
Here is my UserTask model class UserTask < ApplicationRecord belongs_to :user, foreign_key: 'user_email', primary_key: 'email' belongs_to :task enum user_type: [:creator, :allowed] end
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| How to ask for user first_name last_name and then show it [on hold] Posted: 13 Sep 2016 05:50 AM PDT Sorry for this basic questions! Can anybody help? How can I ask for user first name on the welcome page and then refer to that name on other pages? |
| rails redirecting with notice message Posted: 13 Sep 2016 06:21 AM PDT I am redirecting the user to a subdomain of the application based on the parameter respond_to do |format| format.html { redirect_to home_url(subdomain: params[:company]), notice: "Couldn't able to process your request, please try after some time" } end
with a notice message, and the html page to which i am redirecting the user looks like <% flash.each do |name, msg| %> <%= content_tag :div, msg, class: "alerts alerts-info bodyLeftPadd" %> <% end %>
for displaying the flash message. But the problem here is the notice message is not displayed. Is the use of subdomain causing this problem, because if remove the subdomain and if i redirect to the url within the same subdomain i could see the flash message being displayed. respond_to do |format| format.html { redirect_to home_url, notice: "Couldn't able to process your request, please try after some time" } end
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| RoR: Update attribute in a model from a unrelated controller Posted: 13 Sep 2016 06:01 AM PDT I need to pass a value to attribute in a model from a different controller with no direct relation between them. In the below example I need to update farming_year in the Field Model from the Planting controller. The Field model: class Field < ApplicationRecord has_many :crops attr_accessor :farming_year def getting_crops @crops_list = Crop.select('crops.name').where(field_id: self.id, year: get_farming_year) end def get_farming_year @farming_year end def farming_year(val) @farming_year = val end end
In the Planting controller: def new @field = Field.new @field.farming_year = session[:working_year] # doesn't work . end
if I replaced the val in the Field model to be (@farming_year = 2016); the code will work. so that means the controller couldn't update the farming_year. Any ideas how to achieve that? |
| Managing Multiple Hierarchical Rails Models Interlinked to Multiple Levels Posted: 13 Sep 2016 05:10 AM PDT I am building a To Do application but with multiple levels of tasks and subtasks. I have been following Ruby on Rails Tutorial by Michael Hartl and almost everything I have learnt till now is from there. My app has multiple hierarchy models. What I mean is that at the top is the User, a user can have multiple goals, each goal can have multiple tasks, and each task can have multiple subtasks. Just to give you a more clear idea, I'll list down the hierarchy - User
- Goals (multiple goals per user)
- Tasks (multiple tasks per goal)
- Subtasks (multiple subtasks per task)
Now, when I created the models, I included a dependency (has_many/belongs_to) between goals and users, but I also did the same for tasks and users and subtasks and users. The reason for this is that I wanted an 'id' column in all tables that corresponds to the user table so that I can list down all subtasks/tasks/goals of a user very easily. Coming to the front end, I need forms that are capable of adding goals/tasks/subtasks. The relation between users and goals is not problematic at all. The has_many/belongs_to relation allows me to user something like def create @goal = current_user.goals.build(path_params) if @goal.save redirect_to current_user else . . end end
However, the problem arises when I have 3 levels of hierarchy. User, goals and tasks. My question is that how exactly do I do this for the task controller? I tried using something like @task = current_user.goals.tasks.build(task_params)
but that has the obvious flaw apart from probably being syntactically incorrect : there is no way to detect what particular goal this task is being assigned to. What I can think of is that the front end form must contain a field (perhaps hidden) that contains the goal ID to which the task is being assigned. But not entirely sure is this is correct as well or how if a front end gimmick like that can actually help in case there are even more levels of hierarchy. Please tell me where I am going wrong / whats a better way to do this. I am only a beginner right now so I am very confused on how multiple level model hierarchies are managed. |
| Getting '400 Bad request' after setting omniauth + twitter + devise Posted: 13 Sep 2016 05:07 AM PDT Here's what I did: In the devise initializer config.omniauth :twitter, ENV["TrVSTS1gN040ffpuZ61gp7NLO"], ENV["gkm4LE8NwWZO00Tmf4Jr8eYOX9KFkVC5ItkfFbqqyKGfqUuO25"]
In the gemfile gem 'omniauth-twitter' gem 'omniauth'
In the view <%= link_to 'Sin in with Twitter', user_omniauth_authorize_path(:twitter) %>
In the user.rb devise :database_authenticatable, :registerable, :omniauthable, :recoverable, :rememberable, :trackable, :validatable
the error OAuth::Unauthorized 400 Bad Request raise OAuth::Unauthorized, response
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| How to allow delayed function to be delayed in Rails test environment Posted: 13 Sep 2016 04:43 AM PDT I have a Rails model class with a function to be executed at a later time, which is managed by Delayed::Job. Here is the function (simplified): def fn_with_dj_delay puts "puts output here" do_somethting_else end handle_asynchronously :fn_with_dj_delay, :run_at => Proc.new { 24.hours.from_now }, :queue => 'my_queue'
When the function is called in my Rails test environment however, the delaying is being skipped. Is it possible for this to perform the same in both environments? In rails c test the function fires immediately. Here is a slightly simplified and truncated console log: 2.3.1 :004 > x = MyClass.new 2.3.1 :005 > x.save! 2.3.1 :006 > x.fn_with_dj_delay puts output here => #<Delayed::Backend::ActiveRecord::Job id: nil, priority: 0, attempts: 0 # ... 2.3.1 :007 > Delayed::Job.last Delayed::Backend::ActiveRecord::Job Load (0.3ms) SELECT `delayed_jobs`.* # ... => nil
In rails c the function is automatically delayed as instructed. Again, a slightly simplified and truncated console log: 2.3.1 :004 > x = MyClass.new 2.3.1 :005 > x.save! 2.3.1 :006 > x.fn_with_dj_delay (0.2ms) BEGIN SQL (0.4ms) INSERT INTO `delayed_jobs` (`handler`, `run_at`, # ... (0.5ms) COMMIT => true 2.3.1 :007 > Delayed::Job.last Delayed::Backend::ActiveRecord::Job Load (2.2ms) SELECT `delayed_jobs`.* # ... => #<Delayed::Backend::ActiveRecord::Job id: 1, priority: 0, attempts: 0 # ...
The only clue I can see is the returned, uninstantiated Delayed::Backend::ActiveRecord::Job object in the test console when the function finishes. If there is something invalid about the object, I could understand this failure, though I would expect an error to be raised. Regardless, this is not at issue: 2.3.1 :004 > res = p.check_for_similar_web_data puts output here => #<Delayed::Backend::ActiveRecord::Job id: nil, priority: 0, attempts: 0 # ... 2.3.1 :005 > res.valid? => true 2.3.1 :006 > res.save! (0.1ms) BEGIN SQL (0.4ms) INSERT INTO `delayed_jobs` (`handler`, `run_at` # ... (0.5ms) COMMIT => true
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| Tag input field not working with turbolinks Posted: 13 Sep 2016 04:47 AM PDT I'm trying to create a ruby on rails project, and as part of this project I'm using this jQuery plugin to manage tags input. However the tag field works on first refresh but not after any page loads, I'm pretty sure this is a problem with turbolinks not running the js again. So I installed this gem, and changed: $(function() { $("input[data-role=tagsinput], select[multiple][data-role=tagsinput]").tagsinput(); }); })(window.jQuery);
to: $(document).ready(function() { $("input[data-role=tagsinput], select[multiple][data-role=tagsinput]").tagsinput(); }); })(window.jQuery);
in bootstrap-tagsinput.js. However this is still giving me the same issues. Any help fixing this would be great. |
| Is it possible to change the path for assets on the fly? Posted: 13 Sep 2016 04:43 AM PDT Is it possible to change the path for assets on the fly in before_filter from "assets" to something like "my_assets"? How can I do that? In the documentation there's no information about it. |
| elasticsearch mongoid filter on has_many ids Posted: 13 Sep 2016 05:19 AM PDT I'm using ES 1.4, Rails 5, and Mongoid 6. I'm also the mongoid-elasticsearch gem, which I don't think is relevant, but including it in case I'm wrong. I have a Case model. When I run this query, everything works great, here's the query: GET _search { "query":{ "filtered":{ "query":{ "query_string":{ "query":"behemoth" } } } } }
Here's a result, notice the organization_id: hits": [ { "_index": "cases", "_type": "case", "_id": "57d5e583a46100386987d7f4", "_score": 0.13424811, "_source": { "basic info": { "first name": "Joe", "last name": "Smith", "narrative": "behemoth" }, "organization_id": { "$oid": "57d4bc2fa461003841507f83" }, "case_type_id": { "$oid": "57d4bc7aa461002854f88441" } } }
See how there's that "$oid" for organzation id? That's because in my as_indexed_json method for Case, I have: ["organization_id"] = self.case_type.organization.id
I think that the filter doesn't work b/c Mongoid somehow adds that subkey $oid. So my next thought was, I'll just make it a string: ["organization_id"] = self.case_type.organization.id.to_s
But that throws an error: {"error":"MapperParsingException[object mapping for [case] tried to parse as object, but got EOF, has a concrete value been provided to it?]","status":400}
Anyone have any idea how to A) either use a mongo id as a filter, or B) get ES the info it needs so it doesn't complain as above? Thanks for any help, Kevin |
| Rails - how to pass quantity and amount using Stripe Posted: 13 Sep 2016 04:25 AM PDT I'm building an events app using Ruby on Rails and I'm using Stripe to handle all the payments. I can't seem to figure out how to allow a user to be able to book and pay for more than one space at a time. I've used some javascript code for adding the number of spaces required and for the amount to reflect this on the booking page view. So an event at £10 per person(space on an event), for four people will be £40. When I do a Stripe test payment it only shows one payment being taken ( e.g £10 rather than £40 as per the example above). This is what I have in my bookings table - schema.rb - bookings create_table "bookings", force: :cascade do |t| t.integer "event_id" t.integer "user_id" t.string "stripe_token" t.datetime "created_at", null: false t.datetime "updated_at", null: false t.integer "quantity" end
I've included quantity here but I'm thinking I may need a column for amount / total amount? Here's my controller - bookings_controller.rb class BookingsController < ApplicationController before_action :authenticate_user! def new # booking form # I need to find the event that we're making a booking on @event = Event.find(params[:event_id]) # and because the event "has_many :bookings" @booking = @event.bookings.new(quantity: params[:quantity]) # which person is booking the event? @booking.user = current_user #@booking.quantity = @booking.quantity #@total_amount = @booking.quantity.to_f * @event.price.to_f end def create # actually process the booking @event = Event.find(params[:event_id]) @booking = @event.bookings.new(booking_params) @booking.user = current_user Booking.transaction do @event.reload if @event.bookings.count > @event.number_of_spaces flash[:warning] = "Sorry, this event is fully booked." raise ActiveRecord::Rollback, "event is fully booked" end end if @booking.save # CHARGE THE USER WHO'S BOOKED # #{} == puts a variable into a string Stripe::Charge.create(amount: @event.price_pennies, currency: "gbp", card: @booking.stripe_token, description: "Booking number #{@booking.id}", items: [{quantity: @booking.quantity}]) flash[:success] = "Your place on our event has been booked" redirect_to event_path(@event) else flash[:error] = "Payment unsuccessful" render "new" end if @event.is_free? @booking.save! flash[:success] = "Your place on our event has been booked" redirect_to event_path(@event) end end private def booking_params params.require(:booking).permit(:stripe_token, :quantity) end end
Having read through the API details I think the crux of the issue lies with the items: quantity element in the Stripe controller code block but I don't think I've got this right. Also, if I do need to add a total_amount column then this should be added into my booking params? This is the method I have in my model at the moment - def total_amount @booking.quantity * @event.price end
I'm pretty sure this is basic MVC stuff but I'm getting something fundementally wrong. This is my view for the bookings page - bookings.new.html.erb <div class="col-md-6 col-md-offset-3" id="eventshow"> <div class="row"> <div class="panel panel-default"> <div class="panel-heading"> <h2>Confirm Your Booking</h2> </div> <div class="calculate-total"> <p> Confirm number of spaces you wish to book here: <input type="number" placeholder="1" min="1" value="1" class="num-spaces"> </p> <p> Total Amount £<span class="total" data-unit-cost="<%= @event.price %>">0</span> </p> </div> <%= simple_form_for [@event, @booking], id: "new_booking" do |form| %> <span class="payment-errors"></span> <div class="form-row"> <label> <span>Card Number</span> <input type="text" size="20" data-stripe="number"/> </label> </div> <div class="form-row"> <label> <span>CVC</span> <input type="text" size="4" data-stripe="cvc"/> </label> </div> <div class="form-row"> <label> <span>Expiration (MM/YYYY)</span> <input type="text" size="2" data-stripe="exp-month"/> </label> <span> / </span> <input type="text" size="4" data-stripe="exp-year"/> </div> </div> <div class="panel-footer"> <%= form.button :submit %> </div> <% end %> <% end %> </div> </div> </div> <script type="text/javascript"> $('.calculate-total input').on('keyup change', calculateBookingPrice); function calculateBookingPrice() { var unitCost = parseFloat($('.calculate-total .total').data('unit-cost')), numSpaces = parseInt($('.calculate-total .num-spaces').val()), total = (numSpaces * unitCost).toFixed(2); if (isNaN(total)) { total = 0; } $('.calculate-total span.total').text(total); } $(document).ready(calculateBookingPrice) </script> <script type="text/javascript" src="https://js.stripe.com/v2/"></script> <script type="text/javascript"> Stripe.setPublishableKey('<%= STRIPE_PUBLIC_KEY %>'); var stripeResponseHandler = function(status, response) { var $form = $('#new_booking'); if (response.error) { // Show the errors on the form $form.find('.payment-errors').text(response.error.message); $form.find('input[type=submit]').prop('disabled', false); } else { // token contains id, last4, and card type var token = response.id; // Insert the token into the form so it gets submitted to the server $form.append($('<input type="hidden" name="booking[stripe_token]" />').val(token)); // and submit $form.get(0).submit(); } }; // jQuery(function($) { - changed to the line below $(document).on("ready page:load", function () { $('#new_booking').submit(function(event) { var $form = $(this); // Disable the submit button to prevent repeated clicks $form.find('input[type=submit]').prop('disabled', true); Stripe.card.createToken($form, stripeResponseHandler); // Prevent the form from submitting with the default action return false; }); }); </script>
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| Encoding::InvalidByteSequenceError: "\xAB" on UTF-8 in Rails 5 Posted: 13 Sep 2016 04:45 AM PDT Whenever I try to use a stylesheet_link_tag or javascript_include_tag in Rails 5 on Ruby 2.3.1, I get an Encoding::InvalidByteSequenceError: "\xAB" on UTF-8. This is despite all my CSS/JS files being in UTF-8 (I checked). Please help. From application.html.erb: <%= stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track' => 'reload' %> is the line throwing an error.
Full stack trace at https://gist.github.com/mindseyeblind/dbeef97e70c034f4705f70ff5bc2ed9d |
| I have no idea about where I should place config.json file in rails Posted: 13 Sep 2016 05:54 AM PDT I'm using gem 'google_drive'. This gem provides functions to manipulate Google Drive Files. First of all, I have to create config.json as below { "client_id": "my-client-id", "client_secret": "my-client-secret" }
And, Authenticate with session = GoogleDrive::Session.from_config("path/to/config.json")
Then, config.json will be rewritten as below { "client_id": "my-client-id", "client_secret": "my-client-secret", "scope": [ "https://www.googleapis.com/auth/drive", "https://spreadsheets.google.com/feeds/" ], "refresh_token": "refresh-token" }
I don't wanna place config.json in the root of my application.
Where is the best place to put config.json? I was thinking about putting it in config/config.json This seems like a good place to me. But, on the other hand, I think the config directory should contain files that will not be changed while application is running, and config.json will be rewritten by GoogleDrive while application is running. |
| when i am trying to execute rails it says 'missing_extensions?' Posted: 13 Sep 2016 04:34 AM PDT C:\Sites>rails new the_blog create create README.rdoc create Rakefile create config.ru create .gitignore create Gemfile create app create app/assets/javascripts/application.js create app/assets/stylesheets/application.css create app/controllers/application_controller.rb create app/helpers/application_helper.rb create app/views/layouts/application.html.erb create app/assets/images/.keep create app/mailers/.keep create app/models/.keep create app/controllers/concerns/.keep create app/models/concerns/.keep create bin create bin/bundle create bin/rails create bin/rake create bin/setup create config create config/routes.rb create config/application.rb create config/environment.rb create config/secrets.yml create config/environments create config/environments/development.rb create config/environments/production.rb create config/environments/test.rb create config/initializers create config/initializers/assets.rb create config/initializers/backtrace_silencers.rb create config/initializers/cookies_serializer.rb create config/initializers/filter_parameter_logging.rb create config/initializers/inflections.rb create config/initializers/mime_types.rb create config/initializers/session_store.rb create config/initializers/wrap_parameters.rb create config/locales create config/locales/en.yml create config/boot.rb create config/database.yml create db create db/seeds.rb create lib create lib/tasks create lib/tasks/.keep create lib/assets create lib/assets/.keep create log create log/.keep create public create public/404.html create public/422.html create public/500.html create public/favicon.ico create public/robots.txt create test/fixtures create test/fixtures/.keep create test/controllers create test/controllers/.keep create test/mailers create test/mailers/.keep create test/models create test/models/.keep create test/helpers create test/helpers/.keep create test/integration create test/integration/.keep create test/test_helper.rb create tmp/cache create tmp/cache/assets create vendor/assets/javascripts create vendor/assets/javascripts/.keep create vendor/assets/stylesheets create vendor/assets/stylesheets/.keep run bundle install C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ rubygems_ext.rb:23:in `source': uninitialized constant Gem::Source::Installed (N ameError) from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/rubygems_ext.rb:65:in `extension_dir' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:1782:in `gem_build_complete_path' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:1996:in `missing_extensions?' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/basic_specifica tion.rb:67:in `contains_requirable_file?' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `block in find_in_unresolved' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `each' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `find_all' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `find_in_unresolved' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:74:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/source.rb:228:i n `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/rubygems_ext.rb:23:in `source' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/rubygems_ext.rb:65:in `extension_dir' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:1782:in `gem_build_complete_path' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:1996:in `missing_extensions?' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/basic_specifica tion.rb:67:in `contains_requirable_file?' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `block in find_in_unresolved' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `each' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `find_all' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/specification.r b:949:in `find_in_unresolved' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:74:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/rubygems_integration.rb:4:in `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:69:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:69:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler.rb:11:in `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:128:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:128:in `rescue in require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:39:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/generators/app_base.rb:330:in `bundle_command' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/generators/app_base.rb:346:in `run_bundle' from (eval):1:in `run_bundle' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/command.rb:27:in `run' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/invocation.rb:126:in `invoke_command' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/invocation.rb:133:in `block in invoke_all' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/invocation.rb:133:in `each' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/invocation.rb:133:in `map' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/invocation.rb:133:in `invoke_all' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/group.rb:232:in `dispatch' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/thor-0.19.1/li b/thor/base.rb:440:in `start' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands/application.rb:17:in `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:69:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:69:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/cli.rb:14:in `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:69:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/2.2.0/rubygems/core_ext/kernel _require.rb:69:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/bin/rails:9:in `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/bin/rails:23:in `load' from C:/RailsInstaller/Ruby2.2.0/bin/rails:23:in `<main>' C:\Sites>ls the_blog C:\Sites>cd the_blog C:\Sites\the_blog>rails server C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:94:in `rescue in block (2 levels) in require': There was an error whi le trying to load the gem 'uglifier'. (Bundler::GemRequireError) Gem Load Error is: Could not find a JavaScript runtime. See https://github.com/r ails/execjs for a list of available runtimes. Backtrace for gem load error is: C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/execjs-2.7.0/lib/execjs/run times.rb:58:in `autodetect' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/execjs-2.7.0/lib/execjs.rb: 5:in `<module:ExecJS>' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/execjs-2.7.0/lib/execjs.rb: 4:in `<top (required)>' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/uglifier-3.0.2/lib/uglifier .rb:5:in `require' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/uglifier-3.0.2/lib/uglifier .rb:5:in `<top (required)>' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:91:in `require' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:91:in `block (2 levels) in require' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:86:in `each' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:86:in `block in require' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:75:in `each' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler/ runtime.rb:75:in `require' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0/lib/bundler. rb:106:in `require' C:/Sites/the_blog/config/application.rb:7:in `<top (required)>' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/ commands/commands_tasks.rb:78:in `require' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/ commands/commands_tasks.rb:78:in `block in server' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/ commands/commands_tasks.rb:75:in `tap' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/ commands/commands_tasks.rb:75:in `server' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/ commands/commands_tasks.rb:39:in `run_command!' C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5.1/lib/rails/ commands.rb:17:in `<top (required)>' bin/rails:4:in `require' bin/rails:4:in `<main>' Bundler Error Backtrace: from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/runtime.rb:90:in `block (2 levels) in require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/runtime.rb:86:in `each' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/runtime.rb:86:in `block in require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/runtime.rb:75:in `each' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler/runtime.rb:75:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/bundler-1.13.0 /lib/bundler.rb:106:in `require' from C:/Sites/the_blog/config/application.rb:7:in `<top (required)>' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands/commands_tasks.rb:78:in `require' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands/commands_tasks.rb:78:in `block in server' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands/commands_tasks.rb:75:in `tap' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands/commands_tasks.rb:75:in `server' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands/commands_tasks.rb:39:in `run_command!' from C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/railties-4.2.5 .1/lib/rails/commands.rb:17:in `<top (required)>' from bin/rails:4:in `require' from bin/rails:4:in `<main>' C:\Sites\the_blog>
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