The Full Stack Web Development - Models and DB Migrations

This video tutorial covers creating a model and running a database migration in a Rails application using SQLite. It demonstrates building a form for post creation, handling form submissions, and saving and displaying posts. The tutorial concludes with a preview of form validation and listing posts in the next video.

What is the default database used by a new Rails application?

• PostgreSQL

• MySQL

• NoSQL

• SQLite

Which command is used to generate a new model in Rails?

• rails new model

• rails generate model

• rails create model

• rails generate controller

What is the purpose of a migration file in Rails?

• To define routes

• To create or modify database tables

• To create a new controller

• To manage application views

Which form helper is used to create a form for a model in Rails?

• form_with

• form_for

• form_tag

• form_model

What is the purpose of the 'permit' method in Rails?

• To deny all parameters

• To log parameter values

• To specify which parameters are allowed

• To allow all parameters

What does the 'params.require' method do in Rails?

• It denies access to certain parameters

• It logs all parameters

• It automatically saves parameters

• It requires a specific parameter to be present

What is the purpose of the 'redirect_to' method in Rails?

• To render a different view

• To save data to the database

• To redirect the user to a different URL

• To log user actions

Which method is used to find a specific record by its ID in Rails?

• find_by_id

• find

• get_record

• find_record

What is the purpose of the 'save' method in Rails?

• To find a record

• To save a new or modified record to the database

• To update a record

• To delete a record

What happens if you try to submit a form without calling 'save' on the model in Rails?

• The data is automatically saved

• An error is thrown

• The data is logged but not saved

• The form submission is ignored