rails

Rails

Getting Started

• What is Rails?
• MVC Architecture
• Creating a Rails application
• Gemfile

Active Record Basics

• What is Active Record?
• ORM Framework
• Rails Conventions
• CRUD Operations

Active Record Migrations

• Purpose of Migrations in Rails
• Creating, Writing and Running Migrations
• Changing existing Migrations
• Schema File and Seed Data

Active Record Validations

• Basics and Use of Validations
• Validation Helpers(like presence, acceptance, etc.) and Validation options
• Conditional and Custom Validations
• Vaidations Errors

Active Record Callbacks

• Object Life Cycle and Use of Callbacks
• Available Callbacks in Rails
• Running Callbacks and Skipping Callbacks
• Relational, Conditional and Transaction Callbacks

Active Record Associations

• Need for Associations in Rails
• Different Types of Associations
• Polymorphic Associations
• Self Joins
• Detailed Association Reference

Active Record Query Interface

• Retrieving Objects from Database
• Conditions
• Ordering, Selecting, Limit, Offset, Group and Having Clause
• Locking Records for Update
• Joining Tables (joins and left_outer_joins)
• Scopes and Enums
• N+1 Query Problem and Eager Loading Associations
• Find or Build a New Object
• Finding by SQL
• Existence of Objects
• Calculations

Controllers

• Use of Controllers and Naming Conventions
• Methods and Actions
• Parameters
• Session and Cookies
• The Flash
• Filters
• Rendering XML and JSON Data
• HTTP Authentications

Rails Routes

• Purpose of Rails Router
• Resourceful and Non-Resourceful Routing

Layouts and Rendering

• Default Rendering in Rails
• Render and Redirect
• Structuring Layouts

Action View Form Helpers

• Basic Forms
• Dealing with Model Objects
• Customizing Form Builders
• Nested Forms
• form_for and form_tag

Action Mailer

• Sending Emails
• Action Mailer Callbacks

Active Job

• Need for Active Job
• Create and Enqueue a Job
• Job Execution
• Queues and Callbacks
• Action Mailer

Rails Internationalization (I18n)

• Configure the I18n Module
• Internationalization and Localization

REFERENCES

• https://guides.rubyonrails.org/
• https://api.rubyonrails.org/
• https://www.railstutorial.org/book/