Model generation in Ruby on Rails - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to generate a new model named Product.

Ruby on Rails

rails generate [1] Product

Drag options to blanks, or click blank then click option'

Aview

Bmigration

Cmodel

Dcontroller

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'controller' instead of 'model' will create a controller, not a model.

Using 'migration' alone does not create the model file.

The rails generate model command creates a new model file and migration for the database.

2fill in blank

medium

Complete the code to add a string attribute named 'title' to the Product model during generation.

Ruby on Rails

rails generate model Product [1]:string

Drag options to blanks, or click blank then click option'

Atitle

Bprice

Cdescription

Dquantity

Attempts:

3 left

💡 Hint

Common Mistakes

Using an attribute name other than 'title' will not match the requirement.

Omitting the data type will cause an error.

Adding title:string creates a string column named 'title' in the products table.

3fill in blank

hard

Fix the error in the command to generate a model with an integer attribute 'stock'.

Ruby on Rails

rails generate model Inventory [1]:integer

Drag options to blanks, or click blank then click option'

Astock

Bstock_count

Cstock-quantity

Dstock quantity

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stock-quantity' or 'stock quantity' causes syntax errors.

Using 'stock_count' is valid but not the requested attribute name.

The attribute name must be a valid Ruby identifier without spaces or dashes. 'stock' is correct.

4fill in blank

hard

Fill both blanks to generate a model named Order with a date attribute 'order_date' and a decimal attribute 'total_amount'.

Ruby on Rails

rails generate model [1] [2]:date total_amount:decimal

Drag options to blanks, or click blank then click option'

AOrder

Border_date

COrderDate

DorderDate

Attempts:

3 left

💡 Hint

Common Mistakes

Using camelCase or PascalCase for attribute names is incorrect.

Using plural model names is not standard.

The model name is 'Order' and the date attribute is 'order_date'.

5fill in blank

hard

Fill all three blanks to generate a model named User with string attributes 'first_name' and 'last_name' and an integer attribute 'age'.

Ruby on Rails

rails generate model [1] [2]:string [3]:string age:integer

Drag options to blanks, or click blank then click option'

AUser

Bfirst_name

Clast_name

Dusername

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'username' instead of 'last_name' does not match the requirement.

Mixing attribute types or names incorrectly.

The model is 'User' with string attributes 'first_name' and 'last_name', plus an integer 'age'.