| How to sort an array of Integer and OpenStruct objects by a key of one of the OpenStruct Keys Posted: 19 Jun 2016 08:11 AM PDT I am just learning Ruby and started working with arrays. I have an array that looks like: easyStats = [<SampleArray: @id=0, @stats=#<OpenStruct total_sessions_played=244, total_sessions_lost=124>>, <SampleArray: @id=1, @stats=#<OpenStruct total_sessions_played=204, total_sessions_lost=129>>, <SampleArray: @id=2, @stats=#<OpenStruct total_sessions_played=2, total_sessions_lost=4>>]
I can sort the array by the id (Integer) attribute as such: easyStats.sort_by(&:id)
However, what I would like to do is sort the array by a key of the OpenStruct object, I have tried the following options with different errors: easyStats.sort_by(&:stats)
Error: comparison of OpenStruct with OpenStruct failed easyStats.sort_by(&:stats[:total_sessions_played])
Error: no implicit conversion of Symbol into Integer easyStats[:stats].sort_by(&:total_sessions_played)
Error: no implicit conversion of Symbol into Integer I have seen solutions on how to sort an array of just one OpenStruct object and I think I understand it - How to sort a ruby array by two conditions Could someone show me how to sort by any key of the OpenStruct object in this example (Array with Integer and OpenStruct objects)? |
| I'm trying to parse some table and they have some weird alphabet-like non-ascii character Posted: 19 Jun 2016 07:56 AM PDT ＲＩＺＡＬＴＥ I have some weird characters like the ones above. On google, it works and it even searches the same characters on the web browser search function, but it does not match on the ruby console. What is this..? Is there some kind of table that can replace this to normal alphabets? |
| Error PArsing Gemfile "syntax error , unexpected tSTRING Posted: 19 Jun 2016 07:18 AM PDT I am a total newbie. I'm doing the Rubytutorial by Michael Hartl and yesterday everything worked and I was able to publish Hello World-using cloud9 IDE as recommended by the book. This morning however, it seems that the Turbolinks Gem in the gemfile has a syntax error. And as a result, it is not letting me publish the page. Here is the error, as listed : [!] There was an error parsing Gemfile: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '(' - gem 'turbolinks', '2.3.0' ^ /home/ubuntu/workspace/hello_app/Gemfile:20: syntax error, unexpected ',', expecting end-of-input gem 'turbolinks', '2.3.0' Here is a picture of the Gemfile: 
I can't seem to recognize what the syntax error is. Here is the image of the syntax error: 
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| How to present a list in views for this Posted: 19 Jun 2016 07:23 AM PDT I want to present products based on a user attribute. So basically I'm retrieving an object from product class based on user attribute. I don't know how to create a list in my views for those. How can I present them by an attribute? These are my views below right now where I'm showing all products: <% @products.each do |product| %> <%= render "product_row", product: product, order_item: @order_item %> <% end %>
My user.rb def products_for_gender if gender == 'male' Product.where("product_id: '9'") elsif gender == 'female' Product.where("product_id: '10'") else Product.where("product_id: '11'") end end
And my controller: def index @products = Product.all @products = current_user.products_for_gender @order_item = current_order.order_items.new end
Right now I'm getting this error when I try to access product views: ActiveRecord::StatementInvalid in Products#index Showing /home/ubuntu/workspace/app/views/products/index.html.erb where line #31 raised: SQLite3::SQLException: unrecognized token: ":": SELECT "products".* FROM "products" WHERE "products"."active" = ? AND (product_id: '9')
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| Rails route file behaving differently in Heroku vs Localhost Posted: 19 Jun 2016 06:28 AM PDT The responsible code is not environment specific yet it works locally but not in production: POST request to my app's /oauth/token should redirect to a controller overriding default Doorkeeper Token response as shown in the first route routes.rb require 'api_constraints' Rails.application.routes.draw do use_doorkeeper do controllers :tokens => 'access_token' end # Other routes end
The above works fine on a local server however in production[Heroku] this seems to be ignored and is instead routed to default doorkeeper class for no apparent reason. Therefore the response with the token does not contain the user id. REQUEST TO "https://myapp.herokuapp.com/oauth/token" POST /oauth/token HTTP/1.1 Host: myapp.herokuapp.com Cache-Control: no-cache Postman-Token: xxxxxxxx Content-Type: application/x-www-form-urlencoded grant_type=password&email=john%40gmail.com&password=password
THIS RETURNS JSON RESPONSE: { "access_token": "XXXXXX", "token_type": "bearer", "created_at": 1466340696 }
The same request to "http://localhost:3000/oauth/token" returns { "access_token": "XXXXXX", "token_type": "bearer", "created_at": 1466341435, "id": 1 }
with the correctly included user_id. I'm not sure if there is some kind of a cache issue which makes my production server use the old routes file. I've tried restarting dynos and push further changes to to heroku master however this did not resolve the issue. access_token_controller class AccessTokenController < Doorkeeper::TokensController # Overriding create action # POST /oauth/token def create response = strategy.authorize body = response.body if response.status == :ok # User the resource_owner_id from token to identify the user user = User.where(response.token.resource_owner_id).first rescue nil unless user.nil? ### If you want to render user with template ### create an ActionController to render out the user # ac = ActionController::Base.new() # user_json = ac.render_to_string( template: 'api/users/me', locals: { user: user}) # body[:user] = Oj.load(user_json) ### Or if you want to just append user using 'as_json' body[:id] = response.token.resource_owner_id end end self.headers.merge! response.headers self.response_body = body.to_json self.status = response.status rescue Doorkeeper::Errors::DoorkeeperError => e handle_token_exception e end end
Apologies for any confusion and thank you in advance for any assistance with this. |
| How to implement autocomplete with typeahead and searchkick? Posted: 19 Jun 2016 06:17 AM PDT So I've got Page controller: class PagesController < SiteController . . def autocomplete render json: Model.search(params[:q], autocomplete: true, limit: 10).map(&:name) end . . end
and Model model: class Model < ActiveRecord::Base searchkick autocomplete: ['name'] . . end
On my home page(app/views/pages/index.html.erb) I've got search form: <form id="home-search" method="get" action="full_search" class="full-search" data-remote="true"> <%= text_field_tag :q, params[:q], id: "query_field", autocomplete: "off" %> <input type="submit" value="ИСКАТЬ"> </form>
In app/views/layouts/application.html.erb I added this in head tag: <script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/typeahead.js/0.9.3/typeahead.min.js"></script>
I added route to routes.rb get '/autocomplete' => 'pages#autocomplete'
And finnaly I created file app/assets/javascripts/pages.js.coffee with this: $ -> $('#q').typeahead name: "model" remote: "/autocomplete?q=%QUERY"
I followed this tutorial http://blog.ragnarson.com/2013/10/10/adding-search-and-autocomplete-to-a-rails-app-with-elasticsearch.html When I downloaded the project from that tutorial and typed something I got autocomplete and in my console was this: Processing by BooksController#autocomplete as JSON Parameters: {"query"=>"j"} Book Search (144.5ms) curl http://localhost:9200/books_development/_search?pretty -d '{"query":{"multi_match":{"fields":["title.autocomplete"],"query":"j","analyzer":"searchkick_autocomplete_search"}},"size":10,"from":0,"fields":[]}' Book Load (12.5ms) SELECT "books".* FROM "books" WHERE "books"."id" IN (1)
In my project nothing is going on when I type something. Only if I go to http://localhost:3000/autocomplete?q=a I got ["A3","A6","AX","A5","A2","A4","A8","Aska","Arna","Altea"] on page (that's exactly what I need. But I need this to be as autocomplete). And in my console: Processing by PagesController#autocomplete as HTML Parameters: {"q"=>"a"} Model Search (120.2ms) curl http://localhost:9200/models_development/_search?pretty -d '{"query":{"multi_match":{"fields":["name.autocomplete"],"query":"a","analyzer":"searchkick_autocomplete_search"}},"size":10,"from":0,"fields":[]}' Model Load (0.2ms) SELECT `models`.* FROM `models` WHERE `models`.`id` IN (26, 29, 847, 28, 81, 27, 30, 982, 1041, 380)
So what am I doing doing wrong?Looks like typeahead doesn't work... |
| Ruby on Rails error during installation Posted: 19 Jun 2016 05:52 AM PDT I'm trying to install Ruby, I followed the installation guide well, but when I tried to run the server by the command: ruby bin/rails setup after I created the controller called blog as described in the instructions, it gave me an error in red and a text in yellow: Error: Could not find gem uglifier <>= 1.3.0 in the gems available on the machine. Yes! I know that this is a Googleable question but all I can get are solutions for people with internet access on their PC. But unfortunately, my computer doesn't have a working Internet connection. I'm posting this question from my phone. So I'm unable to install uglifier(if that's the required thing to do) through the command prompt. Many thanks. |
| Random record selction and pagiantion in rails 4 Posted: 19 Jun 2016 07:40 AM PDT I need to select random 5 records in sqlite3 and paginate them. def test add_breadcrumb "Age Test", ages_test_url @posts = Age.limit(5).order('RANDOM()') @posts = @posts.page(params[:page]).per_page(2) end
The above code displays all the record but I need only 5. |
| Not found .map extension from node_modules in rails app Posted: 19 Jun 2016 05:38 AM PDT I try to integrate angular to rails app. I extended assets folder by config.assets.paths << Rails.root.join('node_modules')
and it's good work but my console has serveral messages error http://localhost:3000/assets/rxjs/Subject.js.map Rails app couldn't .map extension how to load it |
| How to call api in bundle new gem using httpclient Posted: 19 Jun 2016 05:03 AM PDT I make a new gem in rails using bundle gem . Now I want to call some API in it. But I can't see any tutorial related to that. If anyone know please give link or anything. |
| Heroku Error: Command 'exec' not recognized Posted: 19 Jun 2016 04:59 AM PDT I am not sure if something has changed recently on Heroku but when I run heroku run rake db:migrate I get the following error: Running rake db:migrate on ⬢ protected-bastion-81018... up, run.9931 Error: Command 'exec' not recognized Usage: rails COMMAND [ARGS] The most common rails commands are: generate Generate new code (short-cut alias: "g") console Start the Rails console (short-cut alias: "c") server Start the Rails server (short-cut alias: "s") dbconsole Start a console for the database specified in config/database.yml (short-cut alias: "db") new Create a new Rails application. "rails new my_app" creates a new application called MyApp in "./my_app" In addition to those, there are: destroy Undo code generated with "generate" (short-cut alias: "d") plugin new Generates skeleton for developing a Rails plugin runner Run a piece of code in the application environment (short-cut alias: "r") All commands can be run with -h (or --help) for more information.
rake db:migrate works fine locally and my app is OK on my local machine. Any ideas how to fix this?
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| rails bootstrap modal partial Posted: 19 Jun 2016 04:52 AM PDT Using Rails 4.2.6, Bootstrap-saas 3.2.0 I have a collection of products which i'm rendering in my index view like this. Using bootstrap gridsystem .row =render partial: 'product', collection: @products
The product partial .col-sm-6.col-md-4 .thumbnail %h2 My Box %ul %li=product.name %li=product.brand %li=product.model %li="$#{product_price(product.price)}" =link_to 'more info', '#dialog', 'data-toggle' => 'modal'
I want to display a modal for each rendered product with product.description,product.name displayed in the modal. The problem I'm having is, the modal is only loading with the first product information only. It's supposed to show product information for each product. my modal html markup #dialog.modal.fade{'aria-hidden' => 'true', 'aria-labelledby' => 'myModalLabel', 'data-backdrop' => 'static', 'data-keyboard' => 'true', :role => 'dialog', :tabindex => '-1'} .modal-dialog .modal-content .modal-header %button.close{'aria-label' => 'Close', 'data-dismiss' => 'modal', :type => 'button'} %span{'aria-hidden' => 'true'} × %h3.modal-title=product.name .modal-body %h2=product.desc .modal-footer =button_tag 'close', 'data-dismiss' => 'modal'
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| rails - Getting an id from the url and then passing it as an argument for creating an object Posted: 19 Jun 2016 05:05 AM PDT First off I would like to ask how to redirect after clicking the submit button in a creation form. I have a form for creating a quiz and after they hit submit I want to redirect them to the link 'quiz/:id/add_question' where :id is the id of the just created quiz, but instead I just get redirected to /quizzes and it leads to a "The connection was reset" error in my browser. Here is my quiz form: <div> <h2>Create Quiz</h2> <%= form_for(@quiz) do |f| %> <div> <%= f.label :name %> <%= f.text_field :name %> </br> <%= f.label :subject %> <%= f.text_field :subject %> </div> <%= f.submit "Submit" %> <% end %> </div>
And my quizzes controller: class QuizzesController < ApplicationController def new @quiz = Quiz.new end def create @quiz = Quiz.new(quiz_params) flash[:success] = "Quiz Created successfully" if @quiz.save redirect_to 'quiz/' + @quiz.id.to_s + '/add_question' end private def quiz_params params.require(:quiz).permit(:name, :subject) end end
The quiz/:id/add_question link leads to a question creation form: <div> <%= form_for(@question) do |f| %> <%= f.label :question %></br> <%= f.text_field :question %></br> <%= f.label :answer1 %></br> <%= f.text_field :answer1 %></br> <%= f.label :answer2 %></br> <%= f.text_field :answer2 %></br> <%= f.label :answer3 %></br> <%= f.text_field :answer3 %></br> <%= f.label :answer4 %></br> <%= f.text_field :answer4 %></br> <%= f.label :correct_id %></br> <%= f.text_field :correct_id %></br> <%= f.submit "Add question" %> <% end %> </div>
The other part of my question is how can I pass another argument for the creation of the question object here. I don't want the user to enter that argument because the argument should be the id from the current url (quiz/:id/add_question). |
| Trigger puffing billy only on specific tests by using rspec metadata Posted: 19 Jun 2016 07:20 AM PDT I would like to switch to webkit_billy (the js driver of puffing billy gem) only in certain tests. I want to be able to use : describe "xxx", billy: true do end
This would signal to rspec that I want to switch to puffing biller driver. I wrote this in spec_helper.rb but it's not working: config.before(:each) do |example| if [:billy].include? example.metadata[:type] Capybara.current_driver = :webkit_billy Capybara.javascript_driver = :webkit_billy else Capybara.current_driver = :webkit Capybara.javascript_driver = :webkit end end
Note: I would |
| Rails 4 - change data type of a column from binary to string Posted: 19 Jun 2016 07:34 AM PDT In my model "projectttype" I have a column "image" created with t.binary :image and I need to change it to data type string. This would be my first migration and am unsure how to name the migration. "ChangeImageOnProjecttypes" - does it matter? And add to the migration file: change_column :projecttype, :image, :string Is this correct or if not, what should it be? Thanks. |
| omniauth callback routes mapping issue Posted: 19 Jun 2016 03:03 AM PDT Since I am new to Rails, I am not able to figure out the proper way for mapping the urls. I have just integrated the ominauth plugin in existing app. I need to map the callback url (auth/:provider/callback) to my session controller's create method, I have added a route like this: get 'auth/:provider/callback', to: 'overrides/sessions#create'
Also, the routes for my login system: mount_devise_token_auth_for 'User', at: 'auth', controllers: { registrations: 'overrides/registrations', sessions: 'overrides/sessions', token_validations: 'overrides/token_validations' }
Here is my session controller: module Overrides class SessionsController < DeviseTokenAuth::ApplicationController before_filter :set_user_by_token, :only => [:destroy] def create # ...
it is working for simple login but it throws an exception on callback url with message Could not find devise mapping for path "/auth/google_oauth2/callback?
One thing I have notice is that if I change this: class SessionsController < DeviseTokenAuth::ApplicationController
To this: class SessionsController < ApplicationController
Then url is found but everything breaks for obvious reason. Can anyone please suggest the correct mapping? |
| Angular / Rails net::ERR_TOO_MANY_REDIRECTS on update Posted: 19 Jun 2016 04:09 AM PDT In my Rails app I have included a small angular app, which uses a plug-in to upload a file to Amazon S3. The code is embedded in a rails page. After the file is successfully uploaded to S3, I wish to save the S3 key (a string) in the Rails backend using the Rails update action. I then wish to redirect to the show action on the same rails controller. The job of Angular is finished then, and there is no Angular on the show page. So far it is all working, including the successful save of the update, and there is no error from Rails, but Angular emits the dreaded "net::ERR_TOO_MANY_REDIRECTS" error. Note that I am not using any Angular routing, and in fact would like to avoid doing so and have Rails control page refreshes. Rails controller code: def update respond_to do |format| if @user.update(secure_params) format.html { redirect_to @user } format.json { head :no_content } format.js else format.json { render json: @user.errors.full_messages, status: :unprocessable_entity } end end end
Angular update $scope.upload = function (dataUrl, file) { $scope.aws_file_key = $scope.aws.key + file.name; Upload.upload({ url: $scope.aws.url, method: 'POST', data: { key: $scope.aws_file_key, AWSAccessKeyId: $scope.aws.access_key, acl: $scope.aws.acl, policy: $scope.aws.policy, signature: $scope.aws.signature, "Content-Type": file.type != '' ? file.type : 'application/octet-stream', file: file }, }).then(function (response) { console.log('updateUser'); $timeout(function () { updateUser(); }); }, function (response) { console.log('response'); if (response.status > 0) $scope.errorMsg = response.status + ': ' + response.data; }, function (evt) { console.log('evt'); $scope.progress = parseInt(100.0 * evt.loaded / evt.total); }); } function updateUser() { $http({ method: 'PATCH', url: '/users/' + $scope.user.id, dataType: 'json', contentType: 'application/json', data: {user: { profile_image_s3_key: $scope.aws_file_key }} }); // $http } // updateUser()
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| How do I combine these two snippets of CoffeeScript into 1 file that works? Posted: 19 Jun 2016 03:00 AM PDT So I have two snippets that work independently: $ -> $('[data-provider="summernote"]').each -> $(this).summernote height: 300
And this: $ -> companySelect = $('#company-select') jobFields = $('#job-fields') companySelect.change -> # if selected option is the first option if $(this).find('option:selected').index() == 1 jobFields.show().find(':input').prop 'disabled', false else jobFields.hide().find(':input').prop 'disabled', true return # call change immediately so this still works when already updating and not just creating. companySelect.change() return
Given that these two snippets govern two things within the Jobs#Views, I would like to combine them both in my jobs.coffee file. But I am not quite sure how to put both of them in the same file so they both work without interfering with each other. I tried some stuff, but since I don't really fully understand CoffeeScript I am sure I did it wrong, so that didn't work. |
| How do I make this snippet of CoffeeScript TurboLinks 5 friendly? Posted: 19 Jun 2016 03:00 AM PDT I have the following: $ -> $('[data-provider="summernote"]').each -> $(this).summernote height: 300
And this works, however, I would like to make it TurboLinks 5 friendly. So I tried the following: $ -> ready = -> $('data-provider="summernote"]').each -> $(this).summernote height: 300 $(document).ready(ready) $(document).on('page:load', ready)
But I keep getting this error: Uncaught ReferenceError: ready is not defined
How do I fix this so that I make the original snippet TL-5 friendly? Edit 1 By the way, I am doing this in my jobs.coffee file, which I know is being included in my asset-pipeline. So that's not it. |
| How can I add custom name and Id to a time_select Posted: 19 Jun 2016 04:17 AM PDT I've a time_select and I want to add a custom name and id to the inputs, i tried with: <td> <%= f_messenger.time_select :schedules, :id => "messenger_schedules_#{day}_end", :name => "messenger[schedules][#{day}][end]" %> </td>
if I tried this with text inputs it works but on time_select I get something like: <select id="messenger_schedules_4i" name="messenger[schedules(4i)]">
any ideas? |
| How should I submit my quiz form? Posted: 19 Jun 2016 01:28 AM PDT I guess my problem is two-fold: - Is there a tried-and-true way for creating a form that displays questions and answers? Right now I'm just displaying the question and answer, but giving the user no option to select his or her choice (the correct answer part were just to test that I can correctly set which answers are correct). I have nested models of Survey > Question > Answer
surveys/show.html.erb: <ol> <% @survey.questions.each do |question| %> <li class = 'question'><%= question.content %> <ul> <% for answer in question.answers %> <li class = 'answer'> <%= answer.content %> <%if answer.correct_answer == true %> <span> <b>Correct Answer</b> </span> <% else %> <span> <b>Incorrect Answer</b></span> <% end%> </li> <% end %> </ul> </li> <% end %> </ol>
- I can't decide on where whatever form I end up with should POST to. I would typically just submit to the create action in the same controller, but right now I'm using that action to create the survey. Should I add another controller SurveyAnswer, and then have it post to that controllers create action? Then have that controller's show action show the quiz results?
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| Send 'behalf of' mailgun in Outlook Gmail Posted: 19 Jun 2016 01:27 AM PDT I try to send email via Mailgun service. I have domain mg.domain.com that verified in the DNS (TXT records). I try to send email from user@some_domain.com and the credentials is the mailgun service mg.domain.com. I defined the 'From' in the code as user@some_domain.com In Gmail i get the email like this: user@some_domain.com via mg.domain.com
But in Outlook i get: user=some_domain.com@mg.domain.com on behalf of user@some_domain.com
Why? I want to get in outlook the same as in Gmail, with the '='. Actually, i want to send from info@mg.domain.com, i mean: user@some_domain.com on behalf of info@mg.domain.com
Is it possible? Thanks! |
| Getting "Filter chain halted as :validate_account_update_params rendered or redirected" when trying to update user Posted: 19 Jun 2016 01:04 AM PDT I am using ng-token-auth and devise_token_auth for authentication. When I am trying to update user using $auth.updateAccount
it's showing me Unpermitted parameters: credentials, registration Filter chain halted as :validate_account_update_params rendered or redirected
I have included the following in application_controller.rb before_action :configure_permitted_parameters, if: :devise_controller? private def configure_permitted_parameters devise_parameter_sanitizer.for(:sign_up) << :name devise_parameter_sanitizer.for(:account_update) << :name << :credentials end
Also, credentials field is serialized as an Array in the User model class User < ActiveRecord::Base serialize :credentials, Array end
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| How to get the collection of objects of the `has_many` polymorphic association? Posted: 19 Jun 2016 01:37 AM PDT I would like to create a gem (github) that includes ActiveRecord model Site that can be associated with AdminUser model in the existing Rails application. model Site: module C80SassSeo class Site < ActiveRecord::Base belongs_to :owner, :polymorphic => true end end
model Owner: module C80SassSeo module Owner extend ActiveSupport::Concern # ERROR THROWN: Cannot define multiple 'included' blocks for a Concern # included do # # end def self.included(klass) klass.extend ClassMethods # klass.send(:include, InstanceMethods) end module ClassMethods def act_as_owner class_eval do has_many :sites, :as => :owner, :class_name => 'C80SassSeo::Site' end end end end end ActiveRecord::Base.send :include, C80SassSeo::Owner
migration for Site (c80_sass_seo_ - table prefix): class CreateC80SassSeoSites < ActiveRecord::Migration def change create_table :c80_sass_seo_sites, :options => 'COLLATE=utf8_unicode_ci' do |t| t.string :url t.string :owner_type # NOTE:: without this activeadmin throws an error on index Sites page t.references :owner, index: true t.timestamps end # add_foreign_key :c80_sass_seo_sites, :owners # NOTE:: migration error occurs, comment it end end
activeadmin for Site: ActiveAdmin.register C80SassSeo::Site, as: 'Site' do scope_to :current_admin_user, association_method: :sites_list menu :label => "Sites" permit_params :url, :owner_id config.sort_order = 'id_asc' index do column :url actions end form(:html => {:multipart => true}) do |f| f.inputs 'Properties' do f.input :owner_id, :input_html => { :value => current_admin_user.id }, as: :hidden f.input :url end f.actions end end
BUT I'm getting an empty collection any time I try to access admin_user.sites for a AdminUser instance: => #<ActiveRecord::Associations::CollectionProxy []>
Is the correct way to fetch admin users' sites by implementing method like 'sites_list'? model AdminUser (host application): require 'c80_sass_seo/owner' class AdminUser < ActiveRecord::Base devise :database_authenticatable, :recoverable, :rememberable, :trackable, :validatable act_as_owner def sites_list C80SassSeo::Site.where(:owner_id => self.id) end end
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| Rails code protection Posted: 19 Jun 2016 01:37 AM PDT I want to ask about techniques used for code protection for Rails app. I do know about Rubyencoder, but I wanted to know if there is any other alternative solution? |
| redirect_to next instance on update Posted: 19 Jun 2016 12:00 AM PDT I'm trying to redirect users to the next instance of my WordExposition model after update. What I have currently works for immediately-adjacent word_exposition id's, but raises RecordNotFound if the next lesson's word_exposition's ID skips (i.e. it will redirect properly between id's 1-4, but will break if the next id is 6). How can I get it to redirect also for those non-adjacent WordExposition instances that belong to the same lesson? I based the next_exposition model method on the ideas from this post, but I'm missing something to get it to work here. WordExposition model: class WordExposition < ActiveRecord::Base belongs_to :enrollment belongs_to :word def next_exposition WordExposition.where(["id > ? AND enrollment_id = ?", id, enrollment_id]).first end end
WordExpositions controller: class WordExpositionsController < ApplicationController def update current_word_exposition @current_word_exposition.completed = true @current_word_exposition.term_given_by_student = params[:word_exposition][:term_given_by_student] if @current_word_exposition.save flash[:notice] = "Congratulations!" #currently only redirects correctly for adjacent words in the same lesson, should do so for non-adjacent word_expositions in the same lesson if next_word = @current_word_exposition.next_exposition redirect_to lesson_word_exposition_path(current_lesson, next_word) end else flash[:alert] = "Enter the word exactly as shown!" redirect_to lesson_word_exposition_path(current_lesson, current_word_exposition) end end private helper_method :current_lesson def current_lesson @current_lesson ||= Lesson.find(params[:lesson_id]) end helper_method :current_enrollment def current_enrollment @current_enrollment ||= Enrollment.find_by!(lesson_id: params[:lesson_id], user_id: current_user.id) end def word_exposition_params params.require(:word_exposition).permit(:completed) end helper_method :current_word_exposition def current_word_exposition @current_word_exposition ||= current_enrollment.word_expositions.find_by!(word_id: params[:id]) end end
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| Application failure when deploying heroku app Posted: 19 Jun 2016 12:22 AM PDT I run heroku open I get an application error. I check the logs and this is there: 2016-06-19T05:22:44.640391+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=drawparty-.herokuapp.com request_id=6712804b-95f9-49ce-92a5-7f45df7bb79e fwd="108.172.11.245" dyno= connect= service= status=503 I cannot seem to fix this error. Some things I have tried: heroku restart bundle install heroku run rake db:migrate
The error is H10 which is found here (where's the solution?): https://devcenter.heroku.com/articles/error-codes#h10-app-crashed |
| Refactoring Controller, where to create new methods? Posted: 18 Jun 2016 10:26 PM PDT I have been working on refactoring out my controller and the question I have keep running into is where should I be creating controller specific methods? For instance, my create action within a controller would currently look like: scores_controller.rb def create @score = @user.scores.new(score_params) if @score.save set_shuffled_questions(@score, params[:score][:selected]) questions = Score.build_quiz(@score, params[:score][:selected]) question = questions.shuffle.first cookies[:question] = question.question flash[:success] = "Begin quiz, good luck!" redirect_to score_quiz_path(@score, question) else flash[:alert] = "You suck" render 'new' end end
I am starting to work towards using Sandi Metz' rules for developers, one of them being: Five lines per method. My most natural instinct other than creating an entirely new class filled with methods for this controller would be to put it within the model Score.rb. If that was the case I would be able to change the method to: score.rb # Creates quiz with shuffled questions. def set_shuffled_questions(selected) questions = Score.build_quiz(self, selected) question = questions.shuffle.first cookies[:question] = question.question flash[:success] = "Begin quiz, good luck!" redirect_to score_quiz_path(self, question) end scores_controller.rb def create @score = @user.scores.new(score_params) if @score.save @score.set_shuffled_questions(params[:score][:selected]) else flash[:alert] = "You suck" render 'new' end end
I am fairly certain this is not the correct way to do it, being that you can not set persistent cookies from the model. What is the appropriate way to refactor controllers with methods? |
| Making a survey app, how should I delete questions (and add some layout)? Posted: 18 Jun 2016 10:24 PM PDT I'm making a survey app using a Survey model, which has_many Questions which itself has_many answers. The form partial looks like this: <%= form_for(@survey) do |f| %> <% if @survey.errors.any? %> <div id="error_explanation"> <h2><%= pluralize(@survey.errors.count, "error") %> prohibited this survey from being saved:</h2> <ul> <% @survey.errors.full_messages.each do |message| %> <li><%= message %></li> <% end %> </ul> </div> <% end %> <div class="field"> <%= f.label :name %><br> <%= f.text_field :name %> </div> <%= f.fields_for :questions do |question_attribute| %> <p> <%= question_attribute.label :content, "Question" %><br /> <%= question_attribute.text_area :content, :rows => 3 %> </p> <%= question_attribute.fields_for :answers do |answer_attribute| %> <p> <%= answer_attribute.label :content, "Answer" %> <%= answer_attribute.text_field :content %> </p> <% end %> <% end %> <div class="actions"> <%= f.submit %> </div> <% end %>
and is called by the edit and new actions. quick side note: how is it that rails fills in previous question/answer values in the form when called by the edit action? I want to make it so that when I visit each survey's edit page, beside each question will be a "delete" link, and when I press that delete link the question is deleted from the survey and I'm directed back to the edit page. How should I accomplish this? I took a look at some railscasts but everything they did had been deprecated already. In addition, right now when I show a survey, the questions aren't numbered ie Question 2, Question 2, etc. and the Answers for each question aren't numbered a), b), c), d), e). How do I make rails automatically number these when I create a survey? My show form looks like this: <p id="notice"><%= notice %></p> <p> <strong>Name:</strong> <%= @survey.name %> </p> <ol> <% @survey.questions.each do |question| %> <li><%= question.content %> <ul> <% for answer in question.answers %> <li><%= answer.content %></li> <% end %> </ul> </li> <% end %> </ol> <%= link_to 'Edit', edit_survey_path(@survey) %> | <%= link_to 'Back', surveys_path %>
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| Bundler is removing RUBY VERSION from Gemfile.lock Posted: 18 Jun 2016 09:04 PM PDT I'm having the opposite issue to this one. The Gemfile has: source 'https://rubygems.org' ruby '2.3.1'
At the end of my Gemfile.lock file is: RUBY VERSION ruby 2.3.1p112 BUNDLED WITH 1.12.4
But when I run bundle install is always deleting RUBY VERSION regardless I'm using the same as the development team's version. Even I'm using a more recent bundler version than the used to generate the original Gemfile.lock file: $ bundle -v Bundler version 1.12.5 $ ruby -v ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-linux]
Any ideas how can I stop this? |
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