| How to access a Service in a Rails Engine by using default Engine's namespace? Posted: 22 Aug 2016 07:40 AM PDT I have built a mountable Rails Engine (4.2.6) with the name System in folder lib/engines/system. Inside the app directory, I've created another one called Services and I've added a file system_manager_service.rb with a class SystemManagerService. Now I want to create a new object of this class. I usually use engines by calling functions like (If there's a model called Service) System::Service.do_something. But in this case, I try to use System::SystemManagerService.new and what happens is that the first time I visit the page I get a message: uninitialized constant System::SystemManagerService
I've tried all combinations I've imagined, like including the class SystemManagerService inside module System like: module System class SystemManagerService end end
and it works but the second time I load the page. I've also tried to require_dependency but it failed because app/services is outside lib folder. How can I achieve creating an object from a class living inside app/services folder in a Rails Engine ? |
| How to maintain 2 versions of Rails for a project moving to Rails 5? Posted: 22 Aug 2016 07:38 AM PDT My suite of Rails 4.2 apps and gems are currently being upgraded to Rails 5. Is there a way to maintain 2 seperate Gemfiles and Gemfiles - one for Rails 4.2 and another for Rails 5, and push this off to git, so multiple people can work on the apps in both Rails 4.2 and Rails 5? |
| How to limit concurrent user session in rails app that uses devise? Posted: 22 Aug 2016 07:30 AM PDT Limiting concurrent user sessions or login: For a user I needs to apply limit while login. I want to allow a user user@gmail.com to be able to login from different 5 PCs or browsers only. What I used: I added two fields to users table called session_limit (to specify user login limits) and session_count( to store currently running sessions for that user). I added one to session_count when user login and subtract one from session when user logout or timeout occurs. I checked session_count while logging in and logged out when it reaches session_limit. It worked fine at first. What problem I faced: When user closes browser without logout session_count remains not deducted and when user logins next time it says user_session limit reached. Even if there is none logged in. Please Help. |
| Determine if using Rails console or server when using Spring Posted: 22 Aug 2016 07:18 AM PDT Is it possible to determine if you are in the context of a running Rails server or console in an initializer when Spring is used? I've seen similar questions that don't take Spring into account. |
| undefined method to each do Ruby on rails Posted: 22 Aug 2016 07:39 AM PDT I have two tables: Dimensions and Task. For each dimension have N task. so in Task Controller i have this: def new @dimensions = Dimension.all @dimensions.each do |dimension| @task = Task.new end end
and the view Task this <h1>Tasks#new</h1> <%= form_for(@task) do |task| %> <div class='service'> <li class="col-md-3"> <div class="thumbnail"> <div class="caption"> <h4><%= task.name %></h4> <p><%= task.description %></p> </div> <span> </span> </div> </li> </div> <% end %>
but on the task view it shows me this error message undefined method 'name' undefined method 'descripcion' |
| Iterate 4 Arrays with Rails Posted: 22 Aug 2016 07:33 AM PDT I'm new to Rails and I'm trying to build a nice application and I'm struggling with arrays, I have 4 arrays that I want to iterate and they are not the same size I want to generate sections in HTML using the first array what I did it @sections = ['Section One','Section Two','Section Three','Section Four'] @itemsOne = ['item 1','item 2','item 3','item 4','item 5','item 6'] @itemsTwo = ['item 1','item 2','item 3','item 4','item 5','item 6']
I was using <%= @sections.zip(@itemsOne, @itemsTwo).each do |t1, t2, t3| %> <%= t1 %> <table> <tbody> <tr> <td> <%= t2 %> | <%= t3 %> </td> <td> <%= t2 %> | <%= t3 %> </td> <td> <%= t2 %> | <%= t3 %> </td> </tr> </tbody> </table> <% end %>
I have a table that have a Section Title and cells that have two values but what I get is the value of |t2| in each first cell of |t1| section p.s. the itemsOne and itemsTwo arrays have more than 20 values. |
| paperclip obfuscation renaming Posted: 22 Aug 2016 07:03 AM PDT I am using the paperclip gem and wanted to use the obfuscation function to mask the images. I am currently getting the following error ActionController::RoutingError (No route matches [GET] "/system/users/avatars/000/000/002/square/f65043316b604467fdc350dc64f23ccbf2d43fca.jpg"):
I have set my code up as below has_attached_file :avatar, { styles: { square: '200x200#' }, path: ":rails_root/public:url", url: "/system/:class/:attachment/:id_partition/:style/:hash.:extension", hash_secret: 'abfa04a42c94f58d17a509bccb2276d2f2e1718e23de5f0ff4bc93b4c922c2dbd23f81b31a7932fbf4424c95f14e055639d2376f8b3cb40ebf91ea4682197645' }
and the file which is being uploaded is renamed as 263b6c224069d97527fc799208b9d5c3d5a67c5d.jpg
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| using `find_by` on a serialized hash causes `SerializationTypeMismatch: Attribute was supposed to be a Hash, but was a String` Posted: 22 Aug 2016 06:51 AM PDT I have a serialized hash in a model that I want to query for: class MyModel < ActiveRecord::Base serialize :data, Hash # e.g. contains {"1" => "pass", "2" => "fail"} end
Looks fine in the database and can use the column via console with no issue. Data appears like so before typecast: "---\n'1': pass\n'2': fail\n" I want to then query this column: MyModel.find_by_data({"1" => "pass", "2" => "fail"}) # Gives an undefined table error MyModel.where("data = ?", {"1" => "pass", "2" => "fail"}.to_yaml).first # Works, so long as there is a result MyModel.find_by_data({"1" => "pass", "2" => "fail"}.to_yaml) # Gives ActiveRecord::SerializationTypeMismatch: # Attribute was supposed to be a Hash, but was a String. -- "---\n'1': pass\n'2': fail\n"
Would be grateful for any suggestions. Ruby 2.0, Rails 4.1 |
| Model association on foreign key that is not integer Posted: 22 Aug 2016 06:35 AM PDT I'm building an API in rails, and I have 2 models : Vehicle which has_one: :document class CreateVehicles < ActiveRecord::Migration def change create_table :vehicles do |t| t.string :uuid, limit: 36, null: false, index: true t.string :license_plate_id t.integer :mileage t.string :mileage_unit, default: 'km' t.belongs_to :user, index: true t.timestamps null: false end end end
VehicleDocument belongs_to: :Vehicle class CreateVehicleDocuments < ActiveRecord::Migration def change create_table :vehicle_documents do |t| t.string :uuid, limit: 36, null: false, index: true t.integer :status, default: 0 t.attachment :file t.belongs_to :vehicle, index: true t.timestamps null: false end add_index :vehicle_documents, :status end end
the problem is that I want to use a uuid for the vehicle id. I don't want to expose the real ID outside of my API. how must I do this ? Do I have to do this in the migration file ? model ? Should I not be doing this ? Thanks a lot |
| Update an attribute with value from loop Posted: 22 Aug 2016 06:43 AM PDT I'm building an app to store sport games, for this all users will be placed in seperated leagues. I've set up a many to many for this but when a user looks at the application he can only see all the info from it's current_league. Now I'm trying to make a loop with all the leagues a user is in and the user should be able to click the league to change it's active league. Routes resources :users do member do post :change_current_league end end
UserController def change_current_league @user = current_user @user.update(:current_league_id, params[:league_id]) redirect_to :back, :notice => "Successfully changed your active league" end
View <% current_user.leagues.each do |l| %> <%= link_to change_current_league_user_path(current_user, l), method: :post, class: 'btn btn-default btn-sm' do %> <%= l.id %><%= l.league_name %><br> <% end %> <% end %>
What should I do to get this to work? Sorry if its a bit of a noob question :P EDIT: def change_current_league @user = current_user @user.update_attribute(:current_league_id, 1) redirect_to :back, :notice => "Successfully changed your active league" end resources :users do member do patch :change_current_league end end
This is working but how do I get the correct league_id into the user controller? EDIT2: def change_current_league @league = League.find(params[:league_id]) @user = current_user @user.update_attribute(:current_league_id, @league) redirect_to :back, :notice => "Successfully changed your active league" end
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| AWS Elastic Beanstalk, create environment failed. Posted: 22 Aug 2016 05:50 AM PDT I am using EB for the first time, attempting to upload a Ruby on Rails application from Github to AWS. I am following the step-by-step guide, but I continue running into an error: $ eb create betz5-env Creating application version archive "app-7f74-160822_083029". Uploading betz/app-7f74-160822_083029.zip to S3. This may take a while. Upload Complete. Environment details for: betz5-env Application name: betz Region: us-east-1 Deployed Version: app-7f74-160822_083029 Environment ID: e-3zyk4pueyq Platform: 64bit Amazon Linux 2016.03 v2.1.3 running Ruby 2.1 (Puma) Tier: WebServer-Standard CNAME: UNKNOWN Updated: 2016-08-22 12:29:03.932000+00:00 Printing Status: INFO: createEnvironment is starting. INFO: Using elasticbeanstalk-us-east-1-167880342437 as Amazon S3 storage bucket for environment data. INFO: Created security group named: sg-9e6fc9e4 INFO: Created load balancer named: awseb-e-3-AWSEBLoa-6TCKNDPQOZUO INFO: Environment health has transitioned to Pending. Initialization in progress (running for 32 seconds). There are no instances. INFO: Created security group named: awseb-e-3zyk4pueyq-stack-AWSEBSecurityGroup-1VXHTSO3R625H INFO: Created Auto Scaling launch configuration named: awseb-e-3zyk4pueyq-stack-AWSEBAutoScalingLaunchConfiguration-CI7ZCOZGHSI INFO: Added instance [i-03e33a1f265f89c11] to your environment. INFO: Created Auto Scaling group named: awseb-e-3zyk4pueyq-stack-AWSEBAutoScalingGroup-1CN3N9XS45D1M INFO: Waiting for EC2 instances to launch. This may take a few minutes. INFO: Created Auto Scaling group policy named: arn:aws:autoscaling:us-east-1:167880342437:scalingPolicy:67c04326-a636-4870-ad45-b90a1b436646:autoScalingGroupName/awseb-e-3zyk4pueyq-stack-AWSEBAutoScalingGroup-1CN3N9XS45D1M:policyName/awseb-e-3zyk4pueyq-stack-AWSEBAutoScalingScaleUpPolicy-TKX4L47COQH7 INFO: Created Auto Scaling group policy named: arn:aws:autoscaling:us-east-1:167880342437:scalingPolicy:87478c0b-452a-46ab-a23a-4434d4138a10:autoScalingGroupName/awseb-e-3zyk4pueyq-stack-AWSEBAutoScalingGroup-1CN3N9XS45D1M:policyName/awseb-e-3zyk4pueyq-stack-AWSEBAutoScalingScaleDownPolicy-1UGEJG8FXVJPC INFO: Created CloudWatch alarm named: awseb-e-3zyk4pueyq-stack-AWSEBCloudwatchAlarmLow-BA27Q69FXPNG INFO: Created CloudWatch alarm named: awseb-e-3zyk4pueyq-stack-AWSEBCloudwatchAlarmHigh-13NTHLWPMZE13 ERROR: [Instance: i-03e33a1f265f89c11] Command failed on instance. Return code: 1 Output: (TRUNCATED)... denied for user 'root'@'ec2-54-204-93-56.compute-1.amazonaws.com' (using password: YES) /opt/rubies/ruby-2.1.9/bin/bundle:23:in `load' /opt/rubies/ruby-2.1.9/bin/bundle:23:in `<main>' Tasks: TOP => db:migrate (See full trace by running task with --trace). Hook /opt/elasticbeanstalk/hooks/appdeploy/pre/12_db_migration.sh failed. For more detail, check /var/log/eb-activity.log using console or EB CLI. INFO: Command execution completed on all instances. Summary: [Successful: 0, Failed: 1]. ERROR: Create environment operation is complete, but with errors. For more information, see troubleshooting documentation. WARN: Environment health has transitioned from Pending to Degraded. Command failed on all instances. Initialization completed 39 seconds ago and took 6 minutes. ERROR: The operation timed out. The state of the environment is unknown. The timeout can be set using the --timeout option.
I realize that I am leaving this quite open-ended, but I have no idea why this is not working or what my next step should be to resolve it. The AWS trouble-shooting docs do not seem to be on point, from what I have been able to find. Thanks for any help. |
| Ruby on Rails - Remove slug uniqueness from Friendly_id slug in database Posted: 22 Aug 2016 06:15 AM PDT I use Friendly_id gem in my application. In my Slide model, I don't need slug to be unique, as it's never duplicated (it's auto generated) How can I remove sluguniqueness from my slides database. This is what I have: index_slides_on_slug_and_post_id and slug is :unique => true |
| awesome_nested_set / acts_as_commentable_with_threading Impossible move in certain views Posted: 22 Aug 2016 05:43 AM PDT I have acts_as_commentable_with_threading for comments on a Post model, and my comments work in posts#show but not in comments#show. I've set up the forms with this tutorial by the gem author. CommentsController def create commentable = commentable_type.constantize.find(commentable_id) @comment = Comment.build_from(commentable, current_or_guest_user.id, body) @post = commentable respond_to do |format| if @comment.save create_notification @comment make_child_comment format.html { redirect_to(:back) } format.js else format.html { render :action => "new" } end end end def show @comment = Comment.find(params[:id]) @post = Post.find_by(id: params[:post_id]) @new_comment = Comment.build_from(@comment, current_or_guest_user.id, "") end def make_child_comment return "" if comment_id.blank? parent_comment = Comment.find comment_id parent_comment.errors.full_messages @comment.move_to_child_of(parent_comment) end
PostsController def show @post = Post.find(params[:id]) @root_comments = @post.root_comments.paginate(page: params[:page]) @new_comment = Comment.build_from(@post, current_or_guest_user.id, "") end
the _reply partial in comments/show and posts/show: <%= form_for(@new_comment, remote: true) do |f| %> <%= f.hidden_field :commentable_id, value: @new_comment.commentable_id %> <%= f.hidden_field :commentable_type, value: @new_comment.commentable_type %> <%= f.hidden_field :comment_id, value: @comment.id %> <div class="col-sm-11"> <%= f.text_area :body %> </div> <div class="col-sm-1"> <%= button_tag(type: 'submit', class: "btn btn-primary") do %> <span class="glyphicon glyphicon-comment"></span> <% end %> </div> <% end %>
Per the guide provided by the gem author, the form in comments/show is the same as the _reply form used in posts#show, which works just fine and creates comments correctly. But when I try to make a comment in comments#show, I get the error CollectiveIdea::Acts::NestedSet::Move::ImpossibleMove (Impossible move, target node cannot be inside moved tree.):
app/controllers/comments_controller.rb:126:in 'make_child_comment'
app/controllers/comments_controller.rb:17:in 'block in create'
app/controllers/comments_controller.rb:14:in 'create' even when making a reply to the same comment. (For example, post > comment1 > reply2 is created correctly in posts#show, but comment1 > reply3 in comments#show throws the above error). The params in the server log show that the correct parent_id is being passed from the hidden field, and even if I manually set the parent id in the controller, it still gives an impossible move error. The comment is created in the db, but the parent_id doesn't get set and it isn't properly threaded into the comment tree. Any help appreciated. |
| Associations in Ruby on Rails 4 Posted: 22 Aug 2016 06:14 AM PDT I've got a question to associations in rails. I am trying to create a comment for a post which has a subject. So my routs file looks like this: resources :subjects do resources :post do resources :comments end end
Now am I trying to create a form in the show.html.erb file of the post so someone can create a comment. I've tried it this way which I found in the rails guide: 'posts/show.html.erb' <%= form_for {[@post, @post.comments.build]} do |f| %> //fill in form <% end %>
'posts.controller.rb' def show @post = Post.find(params[:id]) end
But this gives me an error. If you need any other codeparts, feel free to ask. Error Message ActionView::Template::Error (undefined method `post_comments_path' for #<#<Class:0x007f9a4429d5e8>:0x007f9a42c01fc8>): 8: <strong>Text:</strong> 9: <%= @post.text %> 10: </p> 11: <%= form_for ([@post, @post.comments.build]) do |f| %> 12: <p> 13: <%= f.label :text %><br> 14: <%= f.text_area :text %>
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| Showing two types of currencies in Rails 4 app Posted: 22 Aug 2016 05:39 AM PDT I´m building a rails e commerce app, I had all prices in Dollars but now my client want's to show the prices also in Euros. And the client wants to be able to have different prices for each currency, so I can´t link the dollar amount to the rate of Euro against Dollar to display the prices. In other words the client must be able to have two inputs to enter prices, one for dollars and one for Euros which are then displayed on the product page. The only way that I figure to do this is to add another column to the database and call it price_euros or something like that. Because my lack of experience I wanted to ask here if there is another easier way to do this? Thanks in advance D this is the show.html.erbin views/products <div class="row product_top"> <div class="container"> <% breadcrumb :products %> <div class="col-xs-12 col-sm-6 center-block"> <div class="product_description"> <h3><%= @product.name %></h3> <h4><%#=@product.material %></h4> <p><%= @product.description %></p> <p class="price"> Designer: </p> <p><%= @product.designer.designer_name %></p> <p>In stock: <%= @product.stock_quantity %> </p> </div> <div class="col-xs-12"> <p> Price: <%= number_to_currency @product.price, class: 'price' %></p> </div> <div class="row add_to_cart"> <p><%= link_to 'Add to cart', add_cart_path, method: :post %></p> </div> </div> <div class="col-xs-12 col-sm-6 center-block" > <%= image_tag @product.image.url(:medium), class: "img-responsive" %> </div> <p> <% if current_user && current_user.admin? %> <%= link_to 'Edit', edit_product_path(@product) %> | <% end %> <%= link_to 'Back', root_path %> </p> </div> </div>
This is the _form.html.erbpartial were the admin enter prices <%= form_for @product, multipart: true do |f| %> <% if @product.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(@product.errors.count, "error") %> prohibited this product from being saved:</h2> <ul> <% @product.errors.full_messages.each do |message| %> <li><%= message %></li> <% end %> </ul> </div> <% end %> <div class="container"> <div class="form-group"> <%= f.label :name %><br> <%= f.text_field :name, class: "form-control", rows: "5" %> </div> <div class="form-group"> <%= f.label :designer %><br> <%= f.select :designer_id, Designer.all.map { |c| [ c.designer_name, c.id ] } %> </div> <div class="form-group"> <%= f.label :description %><br> <%= f.text_area :description, class: "form-control", rows: "5" %> </div> <div class="form-group"> <%= f.label :price %><br> <%= f.text_field :price %> </div> <div class="form-group"> <%= f.label :image %><br> <%= f.file_field :image %> </div> <div class="form-group"> <%= f.label :stock_quantity %><br> <%= f.number_field :stock_quantity %> </div> <div class="form-group"> <%= f.label :category %><br> <%= f.select :category_id, Category.all.map { |c| [ c.name, c.id ] } %> </div> <div class="actions"> <%= f.submit %> </div> <% end %> </div>
This is my Product model product.rb class Product < ActiveRecord::Base mount_uploader :image, ImageUploader validates_presence_of :name, :price, :stock_quantity validates_numericality_of :price, :stock_quantity belongs_to :designer belongs_to :category belongs_to :page def self.search(query) where("name LIKE ? OR description LIKE ?", "%#{query}%", "%#{query}%") end end
this is the product_controller.rb class ProductsController < ApplicationController before_action :set_product, only: [:show, :edit, :update, :destroy] before_filter :initialize_cart before_action :authenticate_admin!, only: [ :new, :edit, :update, :create, :destroy ] # GET /products # GET /products.json def index @products = Product.all end def search @products = Product.search(params[:query]).order("created_at DESC") @categories = Category.joins(:products).where(:products => {:id => @products.map{|x| x.id }}).distinct end # GET /products/1 # GET /products/1.json def show end # GET /products/new def new @product = Product.new end # GET /products/1/edit def edit end # POST /products # POST /products.json def create @product = Product.new(product_params) respond_to do |format| if @product.save format.html { redirect_to @product, notice: 'Product was successfully created.' } format.json { render :show, status: :created, location: @product } else format.html { render :new } format.json { render json: @product.errors, status: :unprocessable_entity } end end end # PATCH/PUT /products/1 # PATCH/PUT /products/1.json def update respond_to do |format| if @product.update(product_params) format.html { redirect_to @product, notice: 'Product was successfully updated.' } format.json { render :show, status: :ok, location: @product } else format.html { render :edit } format.json { render json: @product.errors, status: :unprocessable_entity } end end end # DELETE /products/1 # DELETE /products/1.json def destroy @product.destroy respond_to do |format| format.html { redirect_to products_url, notice: 'Product was successfully destroyed.' } format.json { head :no_content } end end private # Use callbacks to share common setup or constraints between actions. def set_product @product = Product.find(params[:id]) end # Never trust parameters from the scary internet, only allow the white list through. def product_params params.require(:product).permit(:name, :description, :price, :image, :category_id, :stock_quantity, :designer_id, :query) end end
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| Elasticsearch Transport Error Posted: 22 Aug 2016 05:21 AM PDT So I've run through Heroku's documentation on getting Elasticsearch up and running, and I had it working on another project a few months ago on my current project every time the user adds a record to the application it crashes. If your go back to the index and click "view" the record will be there it's just in the process of saving or searching for the record that the application crashes. The Heroku logs give this error: Elasticsearch::Transport::Transport::Errors::NotFound ([404] {"error":"Cluster not found. It may take a few moments for new clusters to be created. Please contact support@bonsai.io for further assistance.","status":404}): 2016-08-22T12:13:01.110349+00:00 app[web.1]: app/controllers/professors_controller.rb:48:in `block in create' 2016-08-22T12:13:01.110349+00:00 app[web.1]: app/controllers/professors_controller.rb:47:in `create'
If I run heroku run rake db:migrate it will start up Elasticsearch and successfully migrate the db with no problems. I have Elasticsearch installed on Heroku. |
| Where can I learn more about SaaS user subscription business logic [on hold] Posted: 22 Aug 2016 05:21 AM PDT I am building a SaaS application, I want to learn more about the business logic options available and things I need to build into the application for a good subscription experience. For example: - What happens when credit card is declined
- What happens when they downgrade the subscription
- How long should the data be retained in a suspended account
What are the general things that one should be aware of when building a SaaS application? Where can I learn more? |
| has_one through association or alternative way? Posted: 22 Aug 2016 06:55 AM PDT Not sure how to setup the tables and the relationships for what I'm trying to achieve. I thought I need a has_one through relationship but I saw a few posts advising against that. What I'm trying to achieve is a shop creates a list of their services and their staff select the services they do from this list. Here's what I have so far: class User has_many :staff # user and shop have relationship via roles (not shown for simplicity) end class Shop has_many :staff has_many :services # user and shop have relationship via roles (not shown for simplicity) end class Service belongs_to :shop has_many :staff through: :staff_services end class Staff belongs_to :shop belongs_to :user has_many :services through: :staff_services end class StaffService belongs_to :staff # ? has_one :service through: :shop # ? belongs_to :service end
I'm not sure how to set the relationship for StaffServices so that a staff is only able to select services from the shop they are a staff member of. Any help would be appreciated. Thanks! |
| Ruby on Rails select2 AJAX/JQuery - passing a parameter to controller not working Posted: 22 Aug 2016 06:54 AM PDT I'm trying to make a Job descriptions (JD) page to compare between a choose JDs. My main page will have a field to select some jobs, and a button/link to show the selected jobs details in a table below the selection field using select2 with RoR, as in the image Job descriptions Viewer . My issue is that I cannot pass the selected Jobs IDs to the controller, and I get this message: Completed 406 Not Acceptable in 20ms (ActiveRecord: 0.0ms) ActionController::UnknownFormat (ActionController::UnknownFormat): app/controllers/job_descriptions_controller.rb:81:in `updateJobs' My controller method : def updateJobs @selected = JobDescription.where(id: params[:selectJdField2]) respond_to do |format| format.js format.html end end
The main View (jdComparison.html.erb) will render two partials <h1>Listing Job Descriptions</h1> <%= render 'sidebar' %> <div class="clearfix"></div> <div> <%= render partial: 'item_list', locals: { job_desc: @job_descriptions} %> </div>
The _sidebar.html.erb partial has selet2 field and a link to refresh the Jds that called "Find Link": <div class="col-sm-8"> list of JDs: <%= select_tag "selectJdField", options_from_collection_for_select(@job_descriptions, :id, :job_title), { :multiple => true } %> </div> <%= link_to "Find Link", updateJobs_path(@job_descriptions), :remote => true %> <script> $(document).ready(function() { $("#selectJdField").select2(); }); </script>
The _item_list.html.erb partial will view all JDs have been chosen in the select2 field: <div> <table> <thead> <tr> <th>Job title</th> <th>Department</th> </tr> </thead> <tbody> <% job_desc.each do |job_description| %> <tr> <td><%= job_description.job_title %></td> <td><%= job_description.department %></td> </tr> <% end %> </tbody> </table> </div>
updateJobs.js.erb, should refresh the JDs list when I click the "Find Link" button (I think my first issue is here) $("#div_id").html("<%= escape_javascript(render partial: 'item_list', locals: { job_desc: @selected}) %>")
The JS file (I think my second issue is here): $ -> updateLists = () -> $.ajax url:'updateJobs' type: 'post' dataType: 'html' format: 'js' data: { selectJdField2 : $('#selectJdField').val() }
The routes: get 'updateJobs' => 'job_descriptions#updateJobs' post 'updateJobs' => 'job_descriptions#updateJobs'
When I replace the controller method with this: def updateJobs @selected = JobDescription.where(id: 1) end
it will give me the details of JD number 1 after clicking the Find Link. Kindly, I need your help.. |
| Run a local script on Heroku Posted: 22 Aug 2016 04:44 AM PDT I'd like to run an abitrary Ruby script against the rails app (rails console or runner) on my production Heroku instance. I have researched these articles: How do I create a ruby script that runs script/console and then runs commands using that environment? Pass ruby script file to rails console When I try to run a simple script, I am getting errors. $ heroku run bundle exec rails runner test.rb --app herokuapp-production Running bundle exec rails runner test.rb on ⬢ herokuapp-production... up, run.2390 /app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.6/lib/rails/commands/runner.rb:62:in `test': wrong number of arguments (given 0, expected 2..3) (ArgumentError)
The script is image = Image.find(4305) puts "wget --output-document image-#{image.product_id}.jpg #{image.data.url(:xlarge)} "
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| Rails: Polymorphic type relation or not? Posted: 22 Aug 2016 04:14 AM PDT I have three tables below. Those are basically "Class Table Inheritance". - Invoices
- CardInvoices
- BanktransferInvoices
``` Invoices -------- - id - total_amount - invoiceable (either a CardInvoice *or* a BanktransferInvoice) CardInvoices -------- - id - fee_amount - gateway_error - ... BanktransferInvoices -------- - id - ...
``` Basically this is a has_one relation Invoice => BankInvoice/CardInvoice. But I have to extract from other tables and insert data to those tables. (ETL things.) So I do use raw SQL to insert data. So I doubt the "Polymathic type model" above is clean or not, because First, metadata has to be inserted to make it work. (Ex. Invoice_type) Second, Constraints can't be applied. Third, Direct join doesn't work. So I'm thinking about changing the pointing direction. Invoice <= BankInvoice / CardInvocie
With this, I can use the direct join, and check the constraint. Now question is, With the second way, how can I retrieve with BankInvoice / CardInvoice efficiently in Rails 4.2? (I'm new to Rails. I think left outer join would be good. But the more Invoice types added, the more overhead there are.) or can you suggest which implementation would be the better solution and why. Thanks, |
| How to override set_login in spree model user.rb? Posted: 22 Aug 2016 07:47 AM PDT In spree sign_up the app/models/spree/user.rb has def set_login # for now force login to be same as email, eventually we will make this configurable, etc. self.login ||= self.email if self.email end
How can I override set login and do something like this: def set_login # for now force login to be same as email, eventually we will make this configurable, etc. self.login ||= self.phone if self.phone end
Thanks in advance |
| Infobox of google map restricting jquery Hover function Posted: 22 Aug 2016 03:28 AM PDT I have included some html and erb code inside infobox.setContent function,i have written hover function for those html div classes using jquery but background color is not changing when i hover on that button and i am not getting any error also? Does any one know about it please help me out. |
| Not displaying ajax response in haml Posted: 22 Aug 2016 03:27 AM PDT I am trying to display response from the rails server in a div. ajax call is like this $.get('/news/search?search=' + existingString, function(data) { $("#results").html(""); console.log(data); len=data.length; $('#result').append('#{escape_javascript(render("newsdisplay") )}');
_newsdisplay.html.haml - if @results - @results.each do |anzen| %li.clearfix.postMain.allnews .wrapper %li .messaIcon .icon %img{:src => anzen.news_image.thumb.url} .messaCon .areaDay.clearfix %p.messaTextCon グループ名: %span= anzen.news_name
search action def search if params[:search].present? @results = News.search(params[:search]) end end
routes.rb get 'news/search', to: 'news#search', as: :newssearch
I am getting the response from the server correctly. But no change in the page.But in console the full page with rendered response is displayed. Can anyone guess the issue |
| Ruby on rails : undefined method `map' for nil:NilClass , what causes this? when i add record to table Posted: 22 Aug 2016 05:06 AM PDT here is my _form.html.erb <%= simple_form_for @book,:html => { :multipart => true } do |f| %> <%= select_tag(:category_id, options_for_select(@categories), :promt => "Select a category") %> <%= f.file_field :book_img %> <%= f.input :title, label: "Book Title" %> <%= f.input :description %> <%= f.input :author %> <%= f.button :submit %>
and here is my BooksController class BooksController < ApplicationController before_filter :initialize_book before_action :find_book, only: [:show, :edit, :update, :destroy] def initialize_book @book = Book.new end def show @book =Book.find(params[:id]) end def index if params[:category].blank? @books = @books = Book.all.order("created_at DESC") else @category_id = Category.find_by(name: params[:category]).id @books = Book.where(:category_id => @category_id).order("created_at DESC") end end def new @book = current_user.books.build # Book.new @categories = Category.all.map{ |c| [c.name, c.id]} end def create @book =current_user.books.build(book_params) # Book.new(book_params) @book.category_id = params[:category_id] if @book.save redirect_to root_path else render 'new' end end def edit @categories = Category.all.map{ |c| [c.name, c.id]} end def update @book.category_id = params[:category_id] if @book.update(book_params) redirect_to book_path(@book) else render 'edit' end end def destroy @book.destroy redirect_to root_path end private def book_params params.require(:book).permit(:title, :description, :author, :category_id, :book_img) end def find_book @book =Book.find(params[:id]) end
end book.rb class Book < ActiveRecord::Base belongs_to :user belongs_to :category has_attached_file :book_img, styles: { book_index: "250x250>", book_show: "325x475>" }, default_url: "/images/:style/missing.png" validates_attachment_content_type :book_img, content_type: /\Aimage\/.*\z/ end
I installing the paperclip gem to add image to Book and this is a file created when i run Rails migration generator: rails generate paperclip Book book_img class AddAttachmentBookImgToBooks < ActiveRecord::Migration def self.up change_table :books do |t| t.attachment :book_img end end def self.down remove_attachment :books, :book_img end end
But when i add Book and attrack an image to Book had show an error NoMethodError in Books#create Showing C:/Sites/BookReview/app/views/books/_form.html.erb where line #2 raised: undefined method `map' for nil:NilClass Trace of template inclusion: app/views/books/new.html.erb Rails.root: C:/Sites/BookReview Application Trace | Framework Trace | Full Trace app/views/books/_form.html.erb:2:in `block in _app_views_books__form_html_erb___232429848_42489936' app/views/books/_form.html.erb:1:in `_app_views_books__form_html_erb___232429848_42489936' app/views/books/new.html.erb:3:in `_app_views_books_new_html_erb__358042162_78928608' app/controllers/books_controller.rb:39:in `create' Request Parameters: {"utf8"=>"✓", "authenticity_token"=>"kuaFBEmKqeVwLRr+NWke5AS5GxqPK0O/rOSPwDrc+8GsERzW0AlTJvhUji8/OevAIYhETyKc+jiNC3XIvpTAxQ==", "category_id"=>"3", "book"=>{"book_img"=>#<ActionDispatch::Http::UploadedFile:0x91a4060 @tempfile=#<Tempfile:C:/Users/muitr/AppData/Local/Temp/RackMultipart20160822-11652-1id5vn1.jpg>, @original_filename="csharp.jpg", @content_type="image/jpeg",
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| Rails I18n fallbacks for hash Posted: 22 Aug 2016 02:57 AM PDT I have an example ymls: en: hello: world: World time: am: "AM" pm: "PM" ja: hello: world: time: am: "午前" pm: "午後"
Fallback working well when I'm trying to call missing locale: I18n.locale = :ja I18n.t('hello.world') => 'World'
But it returns 'nil' on some values when I'm calling for parent key (hello): I18n.locale = :ja I18n.t('hello') => { world: nil, time: { am: "午前", pm: "午後" } }
How can I get translations with fallbacks: { world: 'World', time: { am: "午前", pm: "午後" } } Thanks! |
| What's the best way to create recurring payments of variable amount in Stripe? Posted: 22 Aug 2016 02:59 AM PDT I have an online club which needs to invoice its users each month. Recurring payments looks great for this, however they are based on "Plans" where I set up different defaults and the user subscribes to a plan. My users can pay anything between $2 and $200 and those amounts might vary depending on the month since it's recurring products they're buying. Does anyone have any good suggestions on how I can to this in Stripe? So far all i've come up with is invoicing & account balance. Which means shoehorning the user into a subscription plan that is near their payment and then adding a negative or positive balance to cover the rest. However I'm certain this isn't the best way (in fact. I think it's a really bad way) Any help would be appreciated |
| Routing Error - Paperclip Posted: 22 Aug 2016 03:12 AM PDT For some reason when I upload files using paperclip, and then try to download them I get this error: No route matches [GET] "/Users/Luka/RailsApps/hsc_notes/public/system/documents/pdfs/19/Wilfred_Owen_Essay.docx" It is saying that it cant get the file. The weird thing is, is that that file is actually in that path. In other words, when i open /Users/Luka/RailsApps/hsc_notes/public/system/documents/pdfs/19/Wilfred_Owen_Essay.docx in safari, it sends me to the correct document. I cannot figure out why it is not downloading the file? This is the relevant bit from my documents model: if Rails.env.development? has_attached_file :pdf, :use_timestamp => false, :url => ":rails_root/public/system/documents/pdfs/:id/:basename.:extension", :path => ":rails_root/public/system/documents/pdfs/:id/:basename.:extension" validates_attachment_content_type :pdf, :content_type => ["application/pdf","application/vnd.ms-excel", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "application/msword", "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "text/plain"] else has_attached_file :pdf, :use_timestamp => false validates_attachment_content_type :pdf, :content_type => ["application/pdf","application/vnd.ms-excel", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", "application/msword", "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "text/plain"] end
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| Embedding precompiled Angular Offline app into rails Posted: 22 Aug 2016 02:28 AM PDT I have a rails application where one little part has to work offline. This part can be totally independent, so I chose to let someone else do it outside of the rails stack as an independent angular offline-application that uses the rails application via REST. The angular app will be a precompiled app with a application.manifest file. Now I want to include it into the rails application just to deploy one app instead of two on the clients server. Example: I have the rails application with administrational stuff and when the user visits something like /coaching the angular app should be served. Now my questions are: Do I put the angular app into the /public folder? Do I have to add some sort of route or add the manifest to application.js or something like that? Or do I add a controller action that responds to "application.manifest"? Thanks in advance, Jascha |
| rake task in upstart service (sphinxsearch) Posted: 22 Aug 2016 02:25 AM PDT I am failing at making the Sphinx daemon run automatically at boot. When I do it manually it does work (and this is what I am trying to reproduce in my upstart script): - I log in as
deploy user - cd sharetribe
bundle exec rake RAILS_ENV=production ts:index and I wait for it to end, then:bundle exec rake RAILS_ENV=production ts:start and the worker is now running Here is my upstart script: start on runlevel [2345] stop on shutdown chdir /home/deploy/sharetribe env RAILS_ENV=production script echo $$ > /var/run/sphinxboot.pid sudo -u deploy -s -- "cd /home/deploy/sharetribe; bundle exec rake RAILS_ENV=production ts:index; bundle exec rake RAILS_ENV=production ts:start" end script pre-start script echo "[`date`] Sphinx Worker Starting" >> /var/log/sphinxboot.log end script pre-stop script rm /var/run/sphinxboot.pid echo "[`date`] Sphinx Worker Stopping" >> /var/log/sphinxboot.log end script
Thank you for your help |
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