Question

I am using paperclip and rails. I followed this tutorial:
Multiple File Uploads with Paperclip & Rails 3 (Screencast)

I have a gallery model that has many galleryphotos.

Instead of linking to the original image in my view, I created a show method in photoimage, but I get the the following error:

undefined method `galleryphoto_path' for #<#<Class:0x007f40a0000c20>:0x00000005385d60>

Here is my code:

<% for asset in gallery.galleryphotos %>
  <%= link_to image_tag(asset.photo.url(:thumb)), url_for(asset) %>
<% end %>

Here is my galleryphoto controller:

class GalleryphotosController < ApplicationController
  load_and_authorize_resource

  def show
    @gallery = Gallery.find(params[:gallery_id])
    @galleyphoto = @gallery.galleyphotos.find(params[:id])


    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @gallery }
    end
  end
 end

Here are my routes for these:

  resources :galleries do
    resources :galleryphotos
  end

Any ideas how to fix this?

Answer 1

The url_for helper will not find a route for the Galleryphoto model because it depends on the Gallery model. It is declared in the routes as a nested resource, so a Galleryphoto does not exist without a Gallery in the url.

To fix this do any of the following:

<%= link_to image_tag(asset.photo.url(:thumb)), url_for(gallery, asset) %>

or

<%= link_to image_tag(asset.photo.url(:thumb)), gallery_galleryphoto_path(gallery, asset) %>