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Versions: 15
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Stored size: 1.85 KB
Contents
class SpudPostCategory < ActiveRecord::Base
searchable
has_and_belongs_to_many :posts,
:class_name => 'SpudPost',
:join_table => 'spud_post_categories_posts',
:foreign_key => 'spud_post_category_id'
has_many :children, :class_name => 'SpudPostCategory', :foreign_key => 'parent_id'
validates_presence_of :name, :url_name
validates_uniqueness_of :name, :url_name
validate :parent_is_valid
before_validation :set_url_name
before_destroy :update_child_categories
scope :top_level, where(:parent_id => 0).order('name asc')
attr_accessible :name, :url_name, :parent_id
def self.grouped
return all.group_by(&:parent_id)
end
# Returns an array of categories in order of heirarchy
# :fitler Filters out a category by ID, and all of its children
# :value Pick an attribute to be used in the value field, defaults to ID
def self.options_for_categories(config={})
collection = config[:collection] || self.grouped
level = config[:level] || 0
parent_id = config[:parent_id] || 0
filter = config[:filter] || nil
value = config[:value] || :id
list = []
if collection[parent_id]
collection[parent_id].each do |c|
if c.id != filter
list << [level.times.collect{ '- ' }.join('') + c.name, c[value]]
list += self.options_for_categories({:collection => collection, :parent_id => c.id, :level => level+1, :filter => filter, :value => value})
end
end
end
return list
end
def posts_with_children
# TO DO: This should return all posts that belong to the instance category and all its child categories
return posts
end
private
def set_url_name
self.url_name = self.name.parameterize
end
def parent_is_valid
if parent_id == self.id
errors.add :base, 'Category cannot be its own parent'
end
end
def update_child_categories
self.children.update_all(:parent_id => self.parent_id)
end
end
Version data entries
15 entries across 15 versions & 1 rubygems