Essential Ruby On Rails

Getting started with Ruby on Rails
- Creating a Ruby on Rails Application
- Create a new Rails app with your choice of database and including the RSpec Testing Tool
- Generating A Controller
- Installing Rails
- Create a new Rails app with a non-standard database adapter
- Creating Rails APIs in JSON
- Generate a Resource with Scaffolds
Routing
- Routing
- Resource Routing Basic
- Constraints
- Scoping routes
- Concerns
- Root route
- Split routes into multiple files
- Additional RESTful actions
- Member and Collection Routes
- Redirection
- Mount another application
- Nested Routes
- Scope available locales
- Redirects and Wildcard Routes
- URL params with a period
ActiveRecord
- ActiveRecord
- Creating a Model via generator
- .where
- .where with an array
- Scopes
- Creating a Model manually
- Introduction to Callbacks
- where.not
- Manually Testing Your Models
- Creating A Migration
- Create a Join Table using Migrations
- Using a model instance to update a row
- when record not found
Views
- Views
- Structure
- Partials
- AssetTagHelper
- Replace HTML code in Views
- HAML - an alternative way to use in your views
ActiveRecord migrations
- ActiveRecord Migrations
- Adding multiple columns to a table
- Add a reference column to a table
- Rollback migrations
- Add a new column with an index
- Run specific migration
- Redo migrations
- Remove an existing column from a table
- Add a new column to a table
- Create a new table
- Running migrations
- Running migrations in different environments
- Add column with default value
- Change an existing columns type
- Create a hstore column
- Add a self reference
- Create a join table
- Create an array column
- Changing Tables
- Checking migration status
- Add an unique column to a table
- Forbid null values
- Adding a NOT NULL constraint to existing data
Rails best practices
- Rails Best Practices
- Fat Model Skinny Controller
- Domain Objects No More Fat Models
- Convention Over Configuration
- Beware of default scope
- Dont Repeat Yourself DRY
- You Aint Gonna Need it YAGNI
Naming conventions
- Naming Conventions
- Controllers
- Models
- Filenames and autoloading
- Views and Layouts
- Models class from Controller name
ActionCable
- ActionCable
- User Authentication
- Basic Server Side
- Basic Client Side Coffeescript
ActiveModel
- ActiveModel
- Using ActiveModel Validations
User Authentication in Rails
- User Authentication in Rails
- Authentication using Devise
- Devise Controller Filters Helpers
- Omniauth
- has secure password
- has secure token
ActiveRecord Associations
- ActiveRecord Associations
- Polymorphic association
- belongs to
- Self-Referential Association
- has many
- has one
- The has many through association
- The has one through association
- The has and belongs to many association
ActiveRecord validations
- ActiveRecord Validations
- Validating length of an attribute
- Validates format of an attribute
- Validating presence of an attribute
- Custom validations
- Validating numericality of an attribute
- Grouping validation
- Validates inclusion of an attribute
- Skipping Validations
- Validate uniqueness of an attribute
- Conditional validation
- Confirmation of attribute
- Using on option
ActiveRecord Query Interface
- ActiveRecord Query Interface
- .where
- .where with an array
- Scopes
- Get first and last record
- where.not
- Ordering
- Includes
- .delete all
- ActiveRecord case insensitive search
- .find by
- .group and .count
- .distinct or .uniq
- Joins
- Limit and Offset
- ActiveRecord Bang methods
ActionMailer
- ActionMailer
- Basic Mailer
- Generating a new mailer
- Adding Attachments
- ActionMailer Callbacks
- ActionMailer Interceptor
- Generate a Scheduled Newsletter
Rails generate commands
- Rails generate commands
- Rails Generate Model
- Rails Generate Migration
- Rails Generate Scaffold
- Rails Generate Controller
Configuration
- Configuration
- Custom configuration
I18N - internalization
- I18n - Internationalization
- I18n with arguments
- Translating ActiveRecord model attributes
- Use I18n with HTML Tags and Symbols
- Pluralization
- Set locale through requests
- Get locale from HTTP request
- Use I18n in views
Using Google Maps with Rails
- Using GoogleMaps with Rails
- Add the google maps javascript tag to the layout header
- Geocode the model
- Show addresses on a google map in the profile view
- Set the markers on the map with javascript
- Initialize the map using a coffee script class.
- Initialize the map markers using a coffee script class
- Auto-zoom a map using a coffee script class
- Exposing the model properties as json
File Uploads
- File Uploads
- Single file upload using Carrierwave
- Nested model - multiple uploads
Caching
- Caching
- Fragment caching
- Page caching
- HTTP caching
- Russian Doll Caching
- SQL Caching
- Action caching
ActionController
- ActionController
- Basic REST Controller
- Filters
- Generating a controller
- Rescuing ActiveRecord RecordNotFound with redirect to
- Controllers Basic
- Parameters
- Filtering parameters Basic
- Redirecting
- Using Views
- Output JSON instead of HTML
- Display error pages for exceptions
- when record not found
Configuration
- Configuration
- Database Configuration
- Environments in Rails
- Rails General Configuration
- Configuring assets
- Configuring generators
Safe constantize
- Safe Constantize
- Successful safe constantize
- Unsuccessful safe constantize
Rails 5
- Rails 5
- How to install Ruby on Rails 5 on RVM
- Creating a Ruby on Rails 5 API
Authorization with CanCan
- Authorization with CanCan
- Getting started with CanCan
- Handling large number of abilities
- Defining abilities
- Quickly test an ability
Mongoid
- Mongoid
- Fields
- Installation
- Creating a Model
- Classic Associations
- Embedded Associations
- Database Calls
Gems
- Gems
- What is a gem
- Bundler
- Gemfiles
- Gemsets
Change default timezone
- Change default timezone
- Change Rails timezone AND have Active Record store times in this timezone
- Change Rails timezone but continue to have Active Record save in the database in UTC
Asset pipeline
- Asset Pipeline
- Manifest Files and Directives
- Rake tasks
- Basic Usage
Upgrading Rails
- Upgrading Rails
- Upgrading from Rails 4.2 to Rails 5.0
ActiveRecord locking
- ActiveRecord Locking
- Optimistic Locking
- Pessimistic Locking
Debugging
- Debugging
- Debugging Rails Application
- Debugging Ruby on Rails Quickly Beginner advice
- Debugging in your IDE
- Debugging ruby-on-rails application with pry
Configure Angular with Rails
- Configure Angular with Rails
- Angular with Rails 101
Rails logger
- Rails logger
- Rails.logger
Prawn PDF
- Prawn PDF
- Advanced Example
- Basic Example
Rails API
- Rails API
- Creating an API-only application
Deploying a Rails app on Heroku
- Deploying a Rails app on Heroku
- Deploying your application
- Managing Production and staging environments for a Heroku
ActiveSupport
- ActiveSupport
- Core Extensions String Access
- Core Extensions String to DateTime Conversion
- Core Extensions String Exclusion
- Core Extensions String Filters
- Core Extensions String Inflection
Form Helpers
- Form Helpers
- Creating a search form
- Helpers for form elements
- Dropdown
- Create a form
ActiveRecord transactions
- ActiveRecord Transactions
- Basic example
- Different ActiveRecord classes in a single transaction
- Multiple database connections
- save and destroy are automatically wrapped in a transaction
- Callbacks
- Rolling back a transaction
RSpec and Ruby on Rails
- RSpec and Ruby on Rails
- Installing RSpec
Decorator pattern
- Decorator pattern
- Decorating a Model using SimpleDelegator
- Decorating a Model using Draper
Elasticsearch
- Elasticsearch
- Searchkick
- Installation and testing
- Setting up tools for development
- Introduction
React with Rails
- React with Rails using react-rails gem
- React installation for Rails using rails react gem
- Using react rails within your application
- Rendering mounting
Rails cookbook
- Rails Cookbook - Advanced rails recipeslearnings and coding techniques
- Playing with Tables using rails console
- Rails methods - returning boolean values
- Handling the error - undefined method where for Array 0x000000071923f8
Multi-purpose ActiveRecord columns
- Multipurpose ActiveRecord columns
- Saving an object
- How To
Class organization
- Class Organization
- Service Class
- Model Class
Shallow Routing
- Shallow Routing
- \1. Use of shallow
Model states AASM
- Model states AASM
- Basic state with AASM
Rails 5 API Authentication
- Rails 5 API Authetication
- Authentication with Rails authenticate with http token
Testing Rails Applications
- Testing Rails Applications
- Unit Test
- Request Test
Active Jobs
- Active Jobs
- Introduction
- Sample Job
- Creating an Active Job via the generator
Rails frameworks over the years
- Rails frameworks over the years
- How to find what frameworks are available in the current version of Rails
- Rails versions in Rails 1.x
- Rails frameworks in Rails 2.x
- Rails frameworks in Rails 3.x
Nested form
- Nested form in Ruby on Rails
- How to setup a nested form in Ruby on Rails
Factory Girl
- Factory Girl
- Defining Factories
CSV
- Import whole CSV files from specific folder
- Uploads CSV from console command
Tools for code optimization and cleanup
- Tools for Ruby on Rails code optimization and cleanup
- If you want to keep your code maintainable secure and optimized look at some gems for code optimization and cleanup
ActiveJob
- ActiveJob
- Create the Job
- Enqueue the Job
Active Model serializers
- Active Model Serializers
- Using a serializer
Rails Engine - Modular Rails
- Rails Engine - Modular Rails
- Create a modular app
Single Table inheritance
- Single Table Inheritance
- Basic example
- Custom inheritance column
- Rails model with type column and without STI
ActiveRecord transactions
- ActiveRecord Transactions
- Getting Started with Active Record Transactions
Turbolinks
- Turbolinks
- Binding to turbolinks concept of a page load
- Disable turbolinks on specific links
- Understanding Application Visits
- Cancelling visits before they begin
- Persisting elements across page loads
Friendly ID
- Friendly ID
- Rails Quickstart
Securely storing authentications keys
- Securely storing authentication keys
- Storing authentication keys with Figaro
Authenticate API using Devise
- Authenticate Api using Devise
- Getting Started
Integrating React.js with Rails using Hyperloop
- Integrating React.js with Rails Using Hyperloop
- Adding a simple react component written in ruby to your Rails app
- Callbacks
- Declaring component parameters props
- HTML Tags
- Event Handlers
- States
Change a default Rails application environment
- Change a default Rails application enviornment
- Running on a local machine
- Running on a server
Reserved words
- Reserved Words
- Reserved Word List
Rails-Engines
- Rails -Engines
- Famous examples are
Adding an Amazon RDS
- Adding an Amazon RDS to your rails application
- Consider we are connecting MYSQL RDS with your rails application.
Payment features in Rails
- Payment feature in rails
- How to integrate with Stripe
Rails on docker
- Rails on docker
- Docker and docker-compose
Contributors

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