How do I make a grouped select box grouped by a column for a given model in Formtastic for Rails?
- by jklina
In my Rails project I'm using Formtastic to manage my forms. I have a model, Tags, with a column, "group". The group column is just a simple hardcoded way to organize my tags. I will post my Tag model class so you can see how it's organized
class Tag < ActiveRecord::Base
class Group
BRAND = 1
SEASON = 2
OCCASION = 3
CONDITION = 4
SUBCATEGORY = 5
end
has_many :taggings, :dependent => :destroy
has_many :plaggs, :through => :taggings
has_many :monitorings, :as => :monitorizable
validates_presence_of :name, :group
validates_uniqueness_of :name, :case_sensitive => false
def self.brands(options = {})
self.all({ :conditions => { :group => Group::BRAND } }.merge(options))
end
def self.seasons(options = {})
self.all({ :conditions => { :group => Group::SEASON } }.merge(options))
end
def self.occasions(options = {})
self.all({ :conditions => { :group => Group::OCCASION } }.merge(options))
end
def self.conditions(options = {})
self.all({ :conditions => { :group => Group::CONDITION } }.merge(options))
end
def self.subcategories(options = {})
self.all({ :conditions => { :group => Group::SUBCATEGORY } }.merge(options))
end
def self.non_brands(options = {})
self.all({ :conditions => [ "`group` != ? AND `group` != ?", Tag::Group::SUBCATEGORY, Tag::Group::BRAND] }.merge(options))
end
end
My goal is to use Formtastic to provide a grouped multiselect box, grouped by the column, "group" with the tags that are returned from the non_brands method. I have tried the following:
= f.input :tags, :required => false, :as => :select, :input_html => { :multiple => true }, :collection => tags, :selected => sel_tags, :group_by => :group, :prompt => false
But I receive the following error:
(undefined method `klass' for
nil:NilClass)
Any ideas where I'm going wrong?
Thanks for looking :]
