Rails - Basic Steps V

Request Processing

http://localhost:3000/posts/1

Call method show in PostsController class passing the params [:id]
The class' path is root_app/app/controllers/posts_controller.rb
The show method will use ActiveRecord#find method to retrieve the post with id=1 from the database and assign to variable @post
The controller will pass @post to the view (template file): root_app/app/views/posts/show.html.erb

Session

Ex: session[ :current_user] = user_id
flash is part of the session that is clear in each request

Ex: flash[:notice] = 'Post was created'

Views

To see the view files

Go to root_app/app/views/posts

The form is in the file _form.html.erb

Embedded Ruby (ERb) is the most common templating framework

Takes a .html.erb template file and transform as HTML
<%= %> the code is assigned to the html file
<% %> the code is only executed

Layout

The default layout is in root_app/views/layouts/application.html.erb
Here contains all the look and feel for the site

Styles

Go to root_app/app/assets/stylesheets where are the files

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