Model generation in Ruby on Rails - Mini Project: Build & Apply

Rails Model Generation

📖 Scenario: You are building a simple blog application where users can create posts. Each post has a title and content.

🎯 Goal: Create a Rails model called Post with attributes title (string) and content (text).

📋 What You'll Learn

Generate a Rails model named Post

Add a title attribute of type string

Add a content attribute of type text

Use the Rails generator command syntax exactly

💡 Why This Matters

🌍 Real World

Creating models is a fundamental step in building Rails applications to represent data and interact with the database.

💼 Career

Rails developers frequently generate models and migrations to build features and manage data structure.

1

Create the Post model

Write the Rails command to generate a model called Post with no attributes yet.

Ruby on Rails

# Your code here

Need a hint?

Use rails generate model ModelName to create a new model.

2

Add the title attribute

Modify the Rails generate command to add a title attribute of type string to the Post model.

Ruby on Rails

rails generate model Post # Add 'title:string' attribute here

Need a hint?

Add attributes after the model name like title:string.

3

Add the content attribute

Extend the Rails generate command to also include a content attribute of type text for the Post model.

Ruby on Rails

rails generate model Post title:string # Add 'content:text' attribute here

Need a hint?

Separate multiple attributes with spaces.

4

Run the migration

Write the Rails command to run the database migration that creates the posts table with the specified attributes.

Ruby on Rails

rails generate model Post title:string content:text
# Your code here to run migration

Need a hint?

Use rails db:migrate to apply migrations to the database.