100days_of_ruby/days006/30_CRUD_and_scaffold_generators.txt at main · ramgopalsiddh/100days_of_ruby · GitHub

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CRUD and scaffold generators - Text directions, references and code
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Query language to communicate with database: SQL (Structured Query Language)

CRUD actions:

C - Create

R - Read

U - Update

D - Delete

Scaffold generator command to create an article model (with two attributes), articles controller, views for articles and migration file to create articles table:

rails generate scaffold Article title:string description:text

Command to see routes presented in a viewer-friendly way:

rails routes --expanded

The line resources :articles in the config/routes.rb file provides the following routes:

- index of articles (GET request)

- new article (GET)

- create article (POST)

- edit article (GET)

- update article (PUT and PATCH)

- show article (GET)

- delete article (DELETE)

From UI perspective ->

- index lists all the articles in the articles table in the database of the app

- new article deals with the form to enter in new article details

- create handles the submission of the items in the new article form

- edit article deals with the form to enter edited information for an existing article

- update article deals with the submission of the edit article form

- show article displays an individual article based on selection

- delete article deletes an article from the articles table

In preparation for the next section, learn and practice SQL here: https://www.w3schools.com/sql/