schaf88 wrote in post #236924:
howdy! I had the problem that attachment_fu didn't make a thumbnail, but everything else worked. I read this post Attachment_fu thumbnail not created - Rails - Ruby-Forum and added a parent_id column. now I get the following error when I trie to add a photo:
undefined method `find_or_initialize_by_thumbnail_and_parent_id' for Photo:Class
my code is:
class Photo < ActiveRecord::Base has_attachment :content_type => :image, :storage => :file_system, :max_size => 1.megabyte, :thumbnails => { :thumb => '164x164>' } end
create_table :photos do |t| t.column :filename, :string t.column :posted_on, :datetime t.column :description, :text t.column :name, :string end
def create @photo = Photo.new(params[:photo]) if @photo.save redirect_to :action => 'list' else render :action => 'new' end end
My first guess, You don't have 'thumbnail' column in your database table. The clue is in the error message: 'find_or_initialize_by_thumbnail_and_parent_id', means attachment_fu looks for both 'thumbnail' and 'parent_id' column
My db table looks something like this and it works fine. create_table :photos do |t| t.string :filename, :null => false t.string :content_type t.string :thumbnail t.integer :size t.integer :width t.integer :height t.integer :parent_id t.integer :album_id