Rails: Do which instance belongs a variable, which is defined in a controller?

Question

If I define an instance-variable in a Rails-controller like for example:

def new
    @article = Article.new
end

I know that I declare an instance-attribute there. But: To which instance will @article become a member of?

How is it possible that it is accessible afterward in the according view without specifying an instance?

For example:

<%= @article.description %>

Actually I would expect something like myInstance.article.description.

rmlockerd · Accepted Answer · 2020-07-01 07:43:33Z

2

@article is an instance variable of your controller class (presumably ArticlesController given your code snippet). When your controller renders a view, the Rails replicates the controller's instance variables automatically so that the view gains the same instance variables.

edited Jul 1, 2020 at 7:43

answered Jul 1, 2020 at 7:25

rmlockerd

4,1462 gold badges21 silver badges28 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Rails: Do which instance belongs a variable, which is defined in a controller?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related