Is it possible to have two callbacks in around_destroy in rails?
ruby-on-rails,activerecord,callback
It'll work without any issue, as Active Record wraps-up these callback methods in a single transaction. Since the object is destroyed in first yield, it seems the later is not feasible (assuming everything is running in one thread). How Rails handles this? No, object isn't destroyed in first yield. Object...
Heroku rake db:migrate failing - uninitialized constant
Your migration file named should correspond to AddWeightToExercises. It should be accordingly xxxxxxxx_add_weight_to_exercises, where xxxxxxx corresponds to a particular timestamp.
Rails - link_to path based on object's name + refactoring multiple custom actions
ruby-on-rails,ruby,refactoring
You can change your routes : resources :techs, :only => [:index, :show], shallow: true do resources :cars, only: [:new, :create] collection do get 'part/:part_name' => "techs#part", as: :part end end Then add the action : def part @techs = Tech.joins(:services).where(services: { name: params[:part_name]}) end and the view will be :...
Can't map a range of dates in Ruby/Rails
You can try : dateLabels = <%= raw @mapped_dates.as_json %>; This will return ["Jan 1", "Jan 2", "Jan 3", ... ] For ActiveSupport::TimeWithZone problem, please do - In config/initializers/time_zone.rb class ActiveSupport::TimeWithZone def as_json(options = {}) if ActiveSupport::JSON::Encoding.use_standard_json_time_format xmlschema else %(#{time.strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)}) end end end ...
Host app and engine with same model name, rendering host app's model from inside engine using host app's partial, rails
ruby-on-rails,ruby,rails-engines
Grab the host's articles from the engine: @host_app_articles = ::Article.all #refers to top-level namespace class Render it from the view inside the engine: <% @host_articles.each do |article| %> <%= render file: "/app/views/articles/_article", locals: {article: article} %> <% end %> And just for completion, here is what the partial might look...
Error installing gem twitter on Ubuntu 15.04
ruby-on-rails,ruby,ubuntu,twitter
You are getting this error because there is no ruby development environment installed. Development environment is needed to compile ruby extensions, You should install development first using command below: $ sudo apt-get install ruby-dev ...
rails - NameError (undefined local variable or method while using has_many :through
ruby-on-rails,ruby,ruby-on-rails-4
In your associations instead of fac_allocs you need to use a symbol because rails is looking a variable or method named fac_allocs instead of your associated model has_many :facs, through: :fac_allocs ...
Rails - Simple Form - Nested Resources paths
ruby-on-rails,simple-form,simple-form-for
Your new action of project_answers controller should be having @project, @project_question defined def new @project_answer = ProjectAnswer.new @project = Project.find(params[:project_id]) @project_question = ProjectQuestion.find(params[:project_question_id]) end So that you can use those in the form like this <%= simple_form_for [@project, @project_question, @project_answer] do |f| %> ...
Can rspec be used to feature test an integrated rails-angular app?
ruby-on-rails,angularjs,rspec,capybara
My guess is that your create(:fighter) call is running in a different thread (and database transaction) than the AJAX get request. Try adding this snippet to your rails_helper. class ActiveRecord::Base mattr_accessor :shared_connection @@shared_connection = nil def self.connection @@shared_connection || retrieve_connection end end ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection Source: https://github.com/jnicklas/capybara#transactions-and-database-setup...
How to find a record from database by using find_by with two fields?
If you're using Rails 4 you can do: @user = User.find_by(first_name: "John", last_name: "Doe") If rails 3: @user = User.find_by_first_name_and_last_name("John", "Doe")...
What is Rack::Utils.multipart_part_limit within Rails and what function does it perform?
ruby-on-rails,ruby,rack,multipart
Telling it short, this value limits the amount of simultaneously opened files for multipart requests. To understand better what is multipart, you can see this question. The reason for this limitation is an ability to better adjust your app for your server. If you have too many files opened at...
Seeding fails validation for nested tables (validates_presence_of)
ruby-on-rails,ruby,validation,ruby-on-rails-4,associations
Found this : Validating nested association in Rails (last chapter) class User belongs_to :organization, inverse_of: :users validates_presence_of :organization_id, :unless => 'usertype==1' end class Organization has_many :users accepts_nested_attributes_for :users, :reject_if => :all_blank, :allow_destroy => true end The documentation is not quite clear about it but I think it's worth a try....
CSS placing image by a form
html,css,ruby-on-rails,zurb-foundation-5
The CSS display:inline is being applied on the container, not on it's elements. One approach is to just float the <img> using class=left and move it alongside the <form>, inside the centered div. <div class="small-9 large-centered columns"> <%= image_tag("successful_forex_trader.jpg", :class => 'left', :alt => "Forex Money Manager") %> <%= form_for(@investor)...
Sorting in Ruby on rails
You're not getting the results you want because you're not assigning the sorted user_infos back into the user_infos variable. You can do the following: user_infos = user_infos.sort {|a, b| - (a['can_go'] <=> b['can_go']) } # -or- user_infos.sort! {|a, b| - (a['can_go'] <=> b['can_go']) } The first version of sort creates...
Rails, Simple Form, Nested Forms
You should change this line <% f.simple_fields_for :project_questions do |f| %> to this <%= simple_form_for :project_questions do |f| %> in order to make it work.
Make instance variable accessible through hash in Ruby
ruby-on-rails,ruby,ruby-on-rails-4,activerecord
It's not "through Hash", it's "array access" operator. To implement it, you need to define methods: def [](*keys) # Define here end def []=(*keys, value) # Define here end Of course, if you won't be using multiple keys to access an element, you're fine with using just key instead of...
RESTful routing best practice when referencing current_user from route?
I would've added special routes for current user profile actions, in this case you don't have to check anything. Just load and display the data of current user. For example: /my-profile/edit /my-profile/newsfeed It's not that RESTful but you don't have to put extra checks keeping your code clean. If you...
Rendering a dynamically generated background based on width
html,css,ruby-on-rails,sass,haml
This should work, using the dynamic value .badge-headline-background :css .badge-headline-background { background-image: url("../assets/header-graphics/#{@badge.background}"); } @media (max-width: 700px) { .badge-headline-background { background-image: url("../assets/small-header-graphics/#{@badge.background}"); } } ...
rendering the partials in controller after the validation check
ruby-on-rails,ruby-on-rails-4,model-view-controller
Why this is not working? if params[:user][:user_role] render :partial => 'users/mentor' else render :partial => 'users/mentee' end params[:user][:user_role] is nil. You can check it using lots of way: Above your if condition raise params[:user].inspect Why its nil? Reason of this is You are passing new_user_path(user_role: true) user_role true, but user_role...
Loop through list of AWS-instances shows only first item
ruby-on-rails,amazon-web-services,amazon-ec2,each,aws-sdk
As far as I know, the method in the controller will return the last object in the loop, so if you have 5 objects it will loop through each and will return the last one, cause that's where the controller method ends in your case. You need to pass the...
Stack level too deep because recursion
ruby-on-rails,ruby,ruby-on-rails-4,twitter
If you express the relation properly, ActiveRecord will do it for you class Tweet belongs_to :original_tweet, class_name: Tweet has_many :retweets, class_name: Tweet, dependent: :destroy, inverse_of :original_tweet end Tweet.last.destroy # will now destroy dependents ...
Rails basic auth not working properly
ruby-on-rails,ruby,authentication
@user.keys.each do |key| username == key.api_id && password == key.api_key end This piece of code returns a value of .each, which is the collection it's called on (@user.keys in this case). As it is a truthy value, the check will pass always, regardless of what are the results of evaluating...
Ruby if else statement one line not working
ruby-on-rails,ruby,ruby-on-rails-4
You do not need to use "if" in the ternary. Change your statement to look like this: <%= current_page?(root_path) ? 'active' : 'inactive' %> ...
whenever gem not working, Rails 4
ruby-on-rails,ruby,ruby-on-rails-3,cron,whenever
PATH problem may be, by putting the following at the top of the schedule.rb, ensure correct bundle path env :PATH, ENV['PATH'] Or try to add following if above one not work. env :GEM_PATH, ENV['GEM_PATH'] ...
Rails less url path change
ruby-on-rails,ruby,url,path,less
You should use the font_url, and put the font in app/assets/fonts @font-face { font-family: 'SomeFont'; src: font_url("db92e416-da16-4ae2-a4c9-378dc24b7952.eot?#iefix"); //... } ...
Rails4 + sunspot search
mysql,ruby-on-rails,solr,sunspot
How are you accessing the result? If you are calling .results method then it will fire db query. You should iterate over hits and get the require field to avoid db query.
How do I setup a multi-option voting system using acts-as-votable?
Seem to be pretty straightforward: https://github.com/ryanto/acts_as_votable#examples-with-scopes @item.vote_by voter: @user1, vote_scope: 'blue' @item.vote_by voter: @user2, vote_scope: 'red' @item.votes_for.size # => 2 @item.find_votes_for(vote_scope: 'blue').size # => 1 @item.find_votes_for(vote_scope: 'red').size # => 1 So you'll need a set of 5 radio buttons (for 5 colors) on your page for the user to select...
Getting a collection via Ajax to show in view
Your partial (currently named: _followup.html.erb in your example) should just be the code to produce a single row, Rails will iterate over it for you, and you should name it after the model it represents, ie. # app/views/assessments/_assessment.html.erb <%= assessment.name %> Then in your app/views/assessments/followups.html.erb view you'd use that partial...
Rails 4 - Javascript - trouble with .not()
javascript,jquery,html,ruby-on-rails,ruby-on-rails-4
jquery's not function will return a jquery object, not an integer. I can't validate if the rest of your logic is working but if you want to get the number of DOM elements that matches your jquery element, you should do it using the length value: if ($('PP').not('.closed').length>=2) { window.alert('already...
Routes work in Development But not in Production
As you can see from logs, you got error page because of line 78 of app/views/shared/_header.html.erb file. In this piece of code, where you creating link <%= link_to "My Account", edit_company_path(current_user.company_id) %> Check if company_id is not nil for that particular user. I'm pretty sure it's nil in your case....
Rails Generates Blank Record Even Input Data
Strong parameters Rails sends form parameters in nested hashes. { page: { subject_id: 1, name: 'Hello World.' } } So to whitelist the parameters you would do. class PagesController < ApplicationController def index @test = Page.all end def new @test = Page.new end def create @test = Page.new(page_params) if @test.save...
autocomplete rails routes issues
jquery,ruby-on-rails,autocomplete
You need a member route for this to work (since you are trying to access "/rfqs/1/autocomplete_customer_name"): get :autocomplete_customer_name, :on => :member Member routes add an :id param in the route, while the collection routes work without id params: resources :items do get :foo, on: :member get :bar, on: :collection end...
Undefined local variable post
ruby-on-rails,ruby,variables,undefined,local
You need to use partial: when you pass locals to a partial as follows: <%= render partial: 'post', locals: { post: post, user: @user} %> I hope this will help you....
Elasticsearch advanced search
I will prefer to do this in your action. tags = params[:q].present? ? params[:q].scan(/#[^ #]+/).collect{|tag| tag.gsub(/#/, '')} : [] now you can use this array of tags in search function...
Controller method: Contact form should render different page depending on where the form is used
ruby-on-rails,ruby,forms,ruby-on-rails-4,controller
You can use something called action_name in Rails 4. action_name gives you the name of the action your view got fired from. Now you can send this property to the method create through a hidden field like following: <%= hidden_field_tag "action_name", action_name %> This line of code will send params[:action_name]...
Rails shared controller actions
ruby-on-rails,ruby,ruby-on-rails-4
You should pass actions to the included block and perform_search_on to the class_methods block. module Searchable extend ActiveSupport::Concern class_methods do def perform_search_on(klass, associations = {}) ............. end end included do def filter respond_to do |format| format.json { render 'api/search/filters.json' } end end end end When your Searchable module include a...
Rails Association Guidance [on hold]
ruby-on-rails,ruby,ruby-on-rails-4,ruby-on-rails-3.2
So, the complex part of your situation is that you have one thing (Surgery) that can be of many different types, and the different types have different fields. There are a number of different approaches to this problem, and I don't believe there's wide consensus on the 'best way'. The...
jQuery remove closest not working on elements added to DOM after page load
You need to use event delegation jquery .on() $(document).on('click', '.remove', function() { $(this).closest('.row').remove(); return false; }); ...
Redirect Loop on Heroku with Rails 4 App, but not on local machine
ruby-on-rails,ruby-on-rails-4,heroku,dns
I discovered the answer. I am on Cloudflare's network. Turns out that if on their "Crypto" panel, if the SSL is set to "flexible" then you will get the redirect loop error. Had to set it to "Full".
User.id not getting saved in form
When you are using nested routes you need to get the parent id from the parameters and merge it with the form parameters. When you post the form the parameters look something like this: { user_id: 1, promo: { title: "¡Ay, caramba!" } } Doing params.require(:promo)... slices the params hash...
Active Record association links, but can't assign values
Your column should be permission_id, not permissions_id. That is why AR doesn't find the related model.
How to use Rails #update_attribute with array field?
ruby-on-rails,ruby,postgresql,ruby-on-rails-4,activerecord
I don't think update_attribute is going to be useful as it will replace the array with the new value rather than append to it (but see better explanation below in --Update-- section). I'm not sure what best practices are here, but this should work to just add something if it...
paper clip show image url is undefine
So your @result is a collection of users. Just call <%= r.image.url(:medium) %>
Rails, default.js is empty, and jquery and jquery_ujs not loaded
jquery,ruby-on-rails,ruby,ruby-on-rails-4,rubygems
Everything is OK from your side. You said that you're on Windows 7, I also experienced this problem once when I needed to run rails on windows for some reason. Than I found an answer here which helped me to get out of this problem. Actually coffee-script-source, v 1.9.x gives...
Javascript not executing when using link_to
javascript,jquery,ruby-on-rails
This is a result of Turbolinks. You can get around this with the following: $(document).on 'click', '.my-btn', (event) -> ... This is happening because Turbolinks is loading the page, and there isn't a document ready event being fired. You want to wait until Turbolinks fires the page:load event. You do...
Migrate from existing password_digest column?
ruby-on-rails,ruby-on-rails-4,devise,bcrypt
Simply write a migration to rename the column name, it will not loose your data. rails g migration ChangeColumnName this will generate a migration file class ChangeColumnName < ActiveRecord::Migration def change rename_column :users, :password_digest, :encrypted_password end end ...
No onclick event for jQuery element added after initial page load
jquery,ruby-on-rails,nested-forms
Try replacing $('<selector>').click(function() { with $(document).delegate('<selector>', 'click', function() { this should be triggered on elements that were added after this script was run initially. Explanation: When you do .click you are adding events on to a known, specific, list of elements. If you add new elements they don't have the...
Is there a way to get the `id` of a nested_form field helper element?
The trick is to use fields_for. It gives you a "scoped" form builder instance which creates inputs for the nested fields. = form_for (:post) do |f| # ... a bunch of fields = f.fields_for :images do |builder| = builder.label :is_on, "Set as primary" = builder.check_box :is_on However your solution has...
Rails - searching in the console
One way I believe you could accomplish this is first finding the scope by project_id and then from there get the background of that scope (since a scope has one background): scope = Scope.where(:project_id => 95).take background = scope.background You could potentially chain them together: Scope.where(:project_id => 95).take.background (Note, haven't...
Mongoid HABTM relationships across embedded documents
ruby-on-rails,ruby-on-rails-4,mongoid,embedded-documents
The reason you are getting the error is because of the logic below. If you are going to need to represent many-to-many relations, do not use a document model to store your state. Use a relational one === You can't represent a many to many relation without an association/reference table/object....
Rails, DNSimple, Heroku and SSL - do I need a certificate?
ruby-on-rails,ssl,heroku,dnsimple
I just went through this same scenario. The certificate you see in your herokuapp is the wildcard certificate issued for *.herokuapp.com. If you want to secure a custom domain name http://my-app-name.com, you would need to purchase and install your own wildcard certificate via DNSimple. ...
Ruby API Call Page Issue
ruby-on-rails,ruby,json,api,httparty
In fact, a quick google led me to this page https://app.enigma.io/api#data which tells me the parameter in question is limit, and that the max is 500. So, it looks like you can't get the data for all rows in one hit. If you really NEED the data for all the...
How to send a mail by postfix mail server with rails?
You need to change the delivery_method from :smtp to :sendmail config.action_mailer.delivery_method = :sendmail ...
Ruby on Rails - Help Adding Badges to Application
ruby-on-rails,ruby,rest,activerecord,one-to-many
Take a look at merit gem. Even if you want to develop your own badge system from scratch this gem contains plenty of nice solutions you can use. https://github.com/merit-gem/merit
RoR send email with html template
You can create a page named notification.html.erb in app/views/mailer directory. You will get all instance variable in notification.html.erb that is defined in your def notification(to_email) def notification(to_email) @name = #pass name here #your code goes here end Now @name will be available in notification.html.erb like Hello, <%= @name %> ...
On rendering from controller, current_page method does not seem to work
ruby-on-rails,ruby,ruby-on-rails-4,model-view-controller
You can use content_for and yields to create a default in your layout which views can override. # layouts/application.html.erb: <% if content_for?(:banner) %> <%= yield(:banner) %> <% else %> <div id="banner"> <h1>This is the default...</h1> </div> <% end %> /users/signup.html.erb: <%- content_for :banner, flush: true do -%> <!-- move along,...
Same enum values for multiple columns
Maybe it makes extract the planet as another model? def Planet enum type: %w(earth mars jupiter) end class PlanetEdge < ActiveRecord::Base belongs_to :first_planet, class_name: 'Planet' belongs_to :second_planet, class_name: 'Planet' end You can create a PlanetEdge by using accepts_nested_attributes_for: class PlanetEdge < ActiveRecord::Base belongs_to :first_planet, class_name: 'Planet' belongs_to :second_planet, class_name: 'Planet'...
Grab host app active record objects when engine and host app have same model names
Use ::Article to refer to the top-level namespace class, and MyEngine::Article to refer to the engine's class. While using Article alone within the MyEngine namespace will resolve correctly, doing this introduces a couple of pitfalls: It makes it confusing to understand your code as there are multiple references to an...
In Ruby how to put multiple lines in one guard clause?
Don't know what the surrounding code looks like so let's assume your code is the entire body of a method. Then a guard clause might look like this: def some_method return if params[:"available_#{district.id}"] != 'true' @deliverycharge = @product.deliverycharges.create!(districtrate_id: district.id) delivery_custom_price(district) end ...
Can Rails deal with DB uniqueness without index?
Because there is no need for other ways. Under the hood it's all the same: when you define a UNIQUE constraint, a UNIQUE index is created on that table to enforce it. Question from DBA.SE: When should I use a unique constraint instead of a unique index? So for a...
How to add link_to under Div on ActiveAdmin's show page | Rails 4
ruby-on-rails,ruby,activeadmin,show
You can write following code instead, and it will work fine. show do default_main_content panel "Best #{trip_type.camelize} (Live)" do live_datas1.each do |live| div do "#{live["outbound_date"].strftime('%A')}, #{live["outbound_date"].strftime('%Y-%m-%d')} To #{live["inbound_date"].strftime('%A')}, #{live["inbound_date"].strftime('%Y-%m-%d')} = #{flight.currency_symbol}#{live["price"]} [#{link_to "Link", "#"}]".html_safe end end end end ...
How to pass array in rails 4 strong parameters
According to the docs https://github.com/rails/strong_parameters#permitted-scalar-values: The permitted scalar types are String, Symbol, NilClass, Numeric, TrueClass, FalseClass, Date, Time, DateTime, StringIO, IO, ActionDispatch::Http::UploadedFile and Rack::Test::UploadedFile. To declare that the value in params must be an array of permitted scalar values map the key to an empty array: params.permit(:id => []) If...
How to convert a string into datetime format using rails?
DateTime.parse('2015-06-20 15:15:15') ...
RoR Tutorial Chapter 3 - Guard detects changes but doesn't fully execute tests
ruby-on-rails,railstutorial.org,minitest,guard
2 tests, 2 assumptions, 0 failures, 0 errors, 0 skips means guard successfully ran 2 tests containing two assumptions (assertions). The messages in the debug log are telling you of missing dependencies. You could save yourself a big headache and use the free cloud 9 and heroku setup Hartl suggests,...
adding background image in style rails 4
ruby-on-rails,twitter-bootstrap,ruby-on-rails-4,asset-pipeline
You should change "background-image:"url(image-url('lines3.png')"; into "background-image:"image-url(image-url('lines3.png')"; http://guides.rubyonrails.org/asset_pipeline.html#css-and-sass Or you can try with: background-image: url(<%= asset_path 'lines3.png' %>)...
Javascript Changing Random Background Image Issue
javascript,html,ruby-on-rails,ruby-on-rails-4,background-image
I don't really want to get deep into your code, in two words: whatever is happening is happening because you have to wait for some actions to complete before they complete (such as animations) and you never want have timeouts within intervals. This has to be helpful: var images =...
Rails 4 + delayed job - constantly writing debug code to production logs
ruby-on-rails,debugging,delayed-job
It is normal, you must have set log_level in config/environments/production.rb to :debug. Changing it to :info will not update production log with delayed job's debug comments....
Not able to create staging instance on heroku [duplicate]
ruby-on-rails,git,heroku,sqlite3
In your Gemfile group :production do gem 'pg', '0.17.1' gem 'rails_12factor', '0.0.2’ end and also remove gem 'sqlite3' OR group :development, :test do gem 'sqlite3' end Because heroku can't install the sqlite3 gem. But you can tell bundler that it shouldn't be trying to except when developing. Then run bundle...
Error when trying to install app with mysql2 gem
mysql,ruby-on-rails,ruby,ruby-on-rails-4
The error log says: ld: library not found for -lssl So, you need to install libssl: brew install openssl Hope it helps....
Rspec view test with url parameters
ruby-on-rails,unit-testing,testing,rspec,rspec-rails
Because these are redirects, controller testing with render_views will not work. Nope, you are just doing it wrong. If StaticpagesController#dashboard accepts url parameters you should test how it responds to said parameters in the controller spec for StaticpagesController. RSpec.describe StaticpagesController, type: :controller do describe 'GET #dashboard' do render_views it...
Styling navbar: interaction between different styling settings
html,css,ruby-on-rails,ruby-on-rails-4
Add override class in the link_to: <%= link_to "Edit profile", edit_user_path(current_user), class:"my-dropdown-item" %> Add to CSS .my-dropdown-item { a { width: 100%; color: #000 !important; } } This might need some tweaking, let me know....
How to exclude guest users from getting emailed Rails 4 Devise
ruby-on-rails,email,ruby-on-rails-4,devise,mailer
def welcome_email(user) # The following line is unnecessary. Normally, you do # something like this when you want to make a variable # available to a view #@user = user # You can make the if more explicit by writing # if user.id == nil, but if will return false...
Slimming down polymorphic controller; where does the logic belong?
@vote = Vote.find(:id) #it depends of what is your params[:vote] @votable = @vote.votable # it will return parent of your vote http://guides.rubyonrails.org/association_basics.html#polymorphic-associations You can wrap above code in a private method and then use it in you actions, i.e: .... def update votable.update(...) end private def votable @votable ||= Vote.find(:id).votable...
Heroku RAM not increasing with upgraded dynos
ruby-on-rails,ruby,ruby-on-rails-3,memory,heroku
That log excert is from a one off dyno, a la heroku run console - this is entirely seperate to your web dynos which you may be runnning 2x dyno's for. You need to specifiy --size=2x in your heroku run command to have the one off process use 2x dynos.
Call method to generate arguments in ruby works in 1.8.7 but not 1.9.3
Change required (in github notation): - myFunction(submitArgs()) + myFunction(*submitArgs) The reason that [I assume] myFunction is declared taking two arguments: def myFunction a1, a2 Hence the array must be splatted before passing to it. I wonder how that worked in 1.8....
sqlite issue with heroku
Specified 'sqlite3' for database adapter, but the gem is not loaded. Add gem 'sqlite3' to your Gemfile (and ensure its version is at the minimum required by ActiveRecord). Add gem 'sqlite3', group: :development to your Gemfile and do bundle install. And also you should be putting pg gem in...
how to get validated the associated attributes? rails4
Use valid? method. It will trigger validations defined in model and return true or false. if @man.valid? @man.save else #do smth else Further reading: http://guides.rubyonrails.org/active_record_validations.html#valid-questionmark-and-invalid-questionmark...
ActiveAdmin ::Show 4 textbox in active admin using has_many relationship
Add the following to your Polls Controller- def new @poll = Poll.new 4.times do @poll.answers.build end end ...
Broken Rails integration after moving 'micropost feed' - Expected at least 1 element matching “div#error_explanation”, found 0
ruby-on-rails,integration-testing
If you look at the error First argument in form cannot contain nil or be empty You can clearly make out from it that the first argument that's @micropost variable is nil. Now move to the controller and see if you have set that variable or not. In else part...
User path with username
ruby-on-rails,ruby,path,user,friendly-id
Artyom you can use the friendly-id gem if you want to make this process easier on you. Ryan Bates has a Railscast on it as well. That way you can use strings as ids (i.e. your username) in the url: http://localhost:3000/articles/hello-world Let me know if you have any questions, -Dave...
Active Record Where Clause For Relation In Model
I want to select sites of premium user This will do User.includes(:sites).where('users.category = ?', 'premium') Update If sites also have categories like 'wordpress or joomla', how do i apply where clause to select only wordpress sites of premium users For that you need to tweak the query like this...
If statement for search field in Rails
jquery,ruby-on-rails,search,if-statement
The standard way to use a search would be to include a parameter in the URL. That way you can have a similar to if user_signed_in? check for the parameter: if params[:search].present?.
Saving to a database using a Nokogiri (json?) rake task
ruby-on-rails,ruby,json,nokogiri
namespace :scraper do desc "Scraper" task scrape: :environment do require 'open-uri' require 'nokogiri' require 'csv' require 'json' url = "https://en.wikipedia.org/wiki/List_of_languages_by_number_of_native_speakers" page = Nokogiri::HTML(open(url)) page.css('td b a').each do |line| puts line.text # "Spanish" Language.create(language: line.text) end end end ...
Couldn't find User with 'id'=show
The show action depends on looking up an id. Since you're hitting the URL /users/show, it assumes you're trying to look up a user with id of show. Instead, you should be going to a url like /users/1 to trigger the show action. The Rails guide on routing has a...
How to validate non-db attributes on an ActiveRecord model?
ruby-on-rails,validation,activerecord
You can use =~ operator instead to match a string with regex, using this you can add a condition in setter methods def resolution=(res) if res =~ /\A\d+x{1}\d+\d/ # do something else # errors.add(...) end end but, as you have already used attr_accessor, you don't have to define getter and...
Rails: get f.range_field to submit null or nil as default value
You can just add a hidden checkbox value to judge whether user select or not. = f.range_field :content, :value=> nil, :class=> "question-field percentage", :step => 10, :in => 0..101, :data => {:question => question.id = check_box_tag :range_clicked, true, false, style:'display:none;' and then add a js function to tell whether user...
Showing and editing has_many objects in Rails
Since you need to support both (POST /milestones and POST /projects/:project_id/milestones) the project_id to the form: <%= form_for [@project,Milestone.new] do |f| %> ... <%= f.hidden_field(:project_id, value: @project_id) %> ... <%- end -%> Or if your resource is always nested than project_id available in the params in your controller so you...
Rails: Posting from a form to a M:M table
As I said, you need to tweak your create action like this in order to save group_id. def create @group = Group.find(params[:group_id]) @discussion = current_user.discussions.build(discussion_params) @discussion.group_id = @group.id if @discussion.save flash[:success] = "Discussion started." redirect_to root_url end end OR You can add a hidden_field in your form_for to save group_id...
Redirect if ActiveRecord::RecordNotUnique error exists
ruby-on-rails,postgresql,activerecord,error-handling
Just the way you catch every other error begin Transaction.create!(:status => params[:st], :transaction_id => params[:tx], :purchased_at => Time.now) rescue ActiveRecord::RecordNotUnique redirect_to root_path end ...
rails Initialize new object through associated search
Scanning your code quickly, I don't see anything missing and while there's a number of ways to get this done, I think you're on the (a) right track. Building things like this in Rails involves getting quite a number of components all working together at the same time, so in...
adding link_to with image_tag and image path both
html,ruby-on-rails,image,ruby-on-rails-4,svg
Remove the space after image_tag. <%= link_to '#' do %> My Project <%= image_tag('logo.svg', "data-svg-fallback" => image_path('logo.svg'), :align=> "left" ,:style => "padding-right: 5px;") %> <% end %> ...
Sortable in Rails 4
ruby-on-rails,jquery-ui,ruby-on-rails-4
In case anyone is wondering, this is what worked for me in Rails 4: def sort params[:video].each_with_index do |id, index| Video.update(id, position: index+1) end render :queue end ...
RSpec test for rake task
ruby-on-rails,ruby,rspec,rake-task
A couple things. First off, you should put created_at in the create method: user.items.create(description: "Old Item", created_at: 12.days.ago). Second, you need to call user.reload in order for the changes from your rake task to be available. So it should look like this: user.reload expect(user.items.count).to eq 1 etc...
Order parent model using children in rails
@products = Product.order("count(votes) DESC") If you have not votes column then use: @products = Product.all.sort { |a, b| b.votes.count <=> a.votes.count } ...