undefined method `albums_path' - ruby-on-rails

Question

I dont understand why this is happening but I am getting this error.
undefined method albums_path and it says that it is on the first line in this code:
<%= form_for #album, :html => { :class => 'form-horizontal', multipart: true } do |f| %>
<div class="control-group">
<%= f.label :name, :class => 'control-label' %>
<div class="controls">
but I dont see why. here is my controller:
class AlbumsController < ApplicationController
before_action :set_album, only: [:show, :edit, :update, :destroy]
respond_to :html
def index
#user = User.find_by_id(params[:id])
#albums = Album.all.where(:user_id => #user)
end
def show
redirect_to user_albums_url
end
def new
#album = Album.new
end
def edit
end
def create
#album = current_user.albums.new(album_params)
respond_to do |format|
if #album.save
if params[:images]
params[:images].each { |image|
#album.pictures.create(image: image)
}
end
format.html { redirect_to #album, notice: 'Gallery was successfully created.' }
format.json { render json: #album, status: :created, location: #album }
else
format.html { render action: "new" }
format.json { render json: #album.errors, status: :unprocessable_entity }
end
end
end
def update
#album.update(album_params)
redirect_to user_albums_url
end
def destroy
#album.destroy
redirect_to user_albums_url
end
private
def set_album
#album = Album.find(params[:id])
end
def album_params
params.require(:album).permit(:name, :description, :images)
end
end
and my routes are as follows:
resources :users do
resources :albums do
resources :pictures do
resources :comments
end
end
end
Ive looked everywhere for my code even mentioning "albums_path" but it doesnt say it anywhere. Is there anything that you guys can think of being the problem? I've tried fixing the forms but it doesnt seem to work. another thing that you might want to see is the link to new action. here it is:
<%= link_to 'New Album', new_user_album_path(:user_id => current_user.id), :class => 'btn btn-mini' %>
I don't know if this helps at all but I'm using the paperclip gem to create albums.

Answer 1

Your albums resource is nested within users resource. Therefore you should set user in your new action (or, better, in before_filter):
before_filter :set_user
# ...
def set_user
#user = User.find(params[:user_id])
end
and add user reference to your form:
form_for [#user, #album] do |f|
BTW, instead of #albums = Album.all.where(:user_id => #user), you can have (it's much more idiomatic in Rails): #albums = #user.albums.