> User.reflect_on_all_associations.map(&:name) > [:addresses, :cookies, :posts]
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Fetch names of associated ActiveRecord models in Rub...
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Sep 27, 2021
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Error on installing mailcatcher The command: gem install mailcatcher fails with error: - ERROR: Error installing mailcatcher: ERROR: Failed to build gem native extension make "DESTDIR=" compiling parser.c parser.rl:112:17: warnin...
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Error installing mailcatcher
Admin
Sep 27, 2021
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Error on installing mailcatcher The command: gem install mailcatcher fails with error: - ERROR: Error installing mailcatcher: ERROR: Failed to build gem native extension Solution gem install mailcatcher -- --with-cflags="-Wn...
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Error installing mailcatcher
Admin
Jul 11, 2020
4 comments
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Suppose you want to remove a 'comments' table from a blog application. You can do so by performing the following tasks from the command line (e.g., Terminal). Step one: $ rails console Step two: $ ActiveRecord::Migration.drop_table(:c...
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Delete table
Admin
Jun 23, 2020
20 comments
856
Issue 1 - Error in installing pg gem Installing pg 0.19.0 with native extensions Gem::Ext::BuildError: ERROR: Failed to build gem native extension. current directory: /home/luke/.rvm/gems/ruby-2.4.1/gems/pg-0.19.0/ext /home/luke/.rvm/rub...
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Common Ruby on Rails gem installation errors
Admin
Mar 25, 2017
10 comments
779
When you change any of your javascripts or stylesheets in the production environment, you need to run rake assets:precompile; this task compiles and compresses the various .js and .css files and creates the application.js and application.css files...
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Clear the cache from the Rails asset pipeline
Introduction Often when developing apps with Rails you need to set up environment variables to keep sensitive information secure in your code. This article looks at how to set up environment config variables in Rails. We’ll look at why we need to...
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Managing Environment Configuration Variables in Rails
In your application controller file app/controllers/application_controller.rb include the following private method: class ApplicationController < ActionController::Base private # Overwriting the sign_out redirect path method de...
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Change the redirect path after signing out: Rails us...
Admin
Apr 16, 2016
18 comments
668
A scaffold in Rails is a full set of model, database migration for that model, controller to manipulate it, views to view and manipulate the data, and a test suite for each of the above. To generate a scaffold for a blog use the rails gener...
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Scaffolding in Rails
Admin
Apr 06, 2016
17 comments
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Generate a controller rails generate controller "controller name" "action1 action2 action3" Delete a controller rails destroy controller "controller name" Create Model and Migration rails generate model "model name" This g...
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Ruby on Rails console commands