Error in the Getting Started Guide?

[t-h-]

Hey there,

im just trying to learn RoR and followed the tutorial step by step so far. reaching 5.2:

"<%= form_for :post, url: posts_path do |f| %>
In this example, the posts_path helper is passed to the :url option. What Rails will do with this is that it will point the form to the create action of the current controller, the PostsController, and will send a POST request to that route."

I get an issue with this dubious posts_path, as it is not mentioned anywhere before in the tutorial and i have no clue how the syntax on the .erb files works. it tells me:

undefined local variable or method `posts_path' for #<# Class:0x3c297d8>:0x3402dc8>

somehow, i cant imagine me being the first one stumbling over this issue. on the other hand i have not that much clue what i am doing. so far, the tutorial has been perfect, but at this point it becomes a bit squishy.

regards

[pftg]

You have missed "For more information about routing, refer to Rails Routing from the Outside In." in the section 4.3.

But I agree with you there is no clue to add resources :posts to routes. Expected that you have added it before you start reading 5th section, without asking you to do that.

[davidcelis]

From the guide:

5 Getting Up and Running

Now that you've seen how to create a controller, an action and a view, let's create something with a bit more substance.

In the Blog application, you will now create a new resource. A resource is the term used for a collection of similar objects, such as posts, people or animals. You can create, read, update and destroy items for a resource and these operations are referred to as CRUD operations.

Rails provides a resources method which can be used to declare a standard REST resource. Here's how config/routes.rb will look like.

Blog::Application.routes.draw do

  resources :posts

  root to: "welcome#index"
end

This occurs before the part about creating the form for a post.

[callmeed]

Actually, there is a clue to add resources :posts in the beginning of Section 5. The url value for that example is wrong. It's pointing to the correct spot.

[pastafari]

Would it be helpful to add something like this in section 5.2:

Remember, at this point, you have already added resources :posts to routes.rb which allows you to use the posts_path helper.