I am struggling to get my relationship in rails to work.
I have a User,Gallery,Comment model
class Gallery has_many :comments belongs_to :user end class User has_many :comments has_many :galleries end class Comment belongs_to :gallery belongs_to :user end
now what should i do in the routes, controller and views to link this all up ? please help me ? its quite confusing finding out the answers. If can, I dont want it to be nested like in the railscast, but i want for each model, eg gallery i can input user, eg comment i can find and input the galleryid and userid.
Im totally lost in oblivion now, not knowing what to do. Please give some assistance. thanks.
It's a complex subject that you can't be simply told how to do, but I'll try to help a little. Zippie's suggestion is a good one, you should go through a tutorial to learn about the different kinds of relationships.
In your database, you will need:
create_table :gallery do |t| t.user_id end create_table :comments do |t| t.gallery_id t.user_id end
These are the foreign indices that Rails will use to match your models (the foreign index goes in the model that specifies the belongs_to relationship).
As for your routes, there is no single solution, but you might want to nest them so you can do things like /users/comments or /galleries/comments:
resource :users do resource :comments end resource :galleries do resource :comments end
You could also simply have them separately:
resources :users, :galleries, :comments
In your controller, when creating a new object, you should do so from the object it belongs to:
@comment = current_user.comments.build(params[:comment])
This will set the comment's user_id to the current user, for example.
In the view, there's not much difference, just get the @comments variable in the controller like so:
@comments = @gallery.comments
and use it in your view.
It might be less intuitive when you want to define a form helper to create a new comment, for example:
<%= form_for([@gallery, @comment]) do |f| %> ... <% end %>
I hope that helps you get started.
