CODEWITHSUNDEEP
ruby-on-railsresources
Sam D20
Sam D20

Reputation: 2575

Why does passing this object through redirect_to call the `show` action?

def create
  @article = Article.new(params[:article])

  @article.save
  redirect_to @article
end

def show
    @article = Article.find(params[:id]) 
end

I'm following the Getting Started with Rails guide. I have a form that, upon clicking the submit button, creates an @article object (a RESTful object) with the form input.

redirect_to @article sends a GET request to /articles/id, right? If so, why does this happen? Is this simply how redirect_to works?

Upvotes: 1

Views: 61

Answers (2)

Richard Peck
Richard Peck

Reputation: 76784

Objects

To add to Nishu's answer, when you reference an object in any path_helper (link_to, redirect_to etc), Rails will do the hard work and show you the route for the object

Remember, Ruby / Rails is an object-orientated framework, meaning everything you do has to revolve around an object. In the case of Rails, objects are populated with data from your models, which is done using ActiveRecord

--

So if you use redirect_to @article, Rails will basically look for the show action for that particular record. As your routes should be resourceful - meaning Rails can basically look for the relevant route to display that record on its own

Hope this helps?

Upvotes: 1

nishu
nishu

Reputation: 1493

redirect_to calls url_for if the argument passed is a Record.

url_for calls to_param on record which by default returns id.

Hence redirect_to @article will generate /articles/:id

Upvotes: 2

Related Questions