metamaps--metamaps/app/models/item.rb

58 lines
1.6 KiB
Ruby

class Item < ActiveRecord::Base
belongs_to :user
has_many :itemitem_c, :foreign_key => 'parent_item_id', :class_name => 'Itemitem'
has_many :itemitem_p, :foreign_key => 'item_id', :class_name => 'Itemitem'
has_many :groupitems
has_many :personitems
has_many :groups, :through => :groupitems
has_many :people, :through => :personitems
has_many :synapses1, :class_name => 'Synapse', :foreign_key => 'node1_id', :conditions => {:category => 'Item'}
has_many :synapses2, :class_name => 'Synapse', :foreign_key => 'node2_id', :conditions => {:category => 'Item'}
has_many :items1, :through => :synapses2, :source => :item1
has_many :items2, :through => :synapses1, :source => :item2
def synapses
synapses1 + synapses2
end
def relatives
items1 + items2
end
belongs_to :item_category
has_many :child_items, :through => :itemitem_c, :source => :item
has_many :parent_items, :through => :itemitem_p, :source => :parent_item
def as_json
Jbuilder.encode do |json|
@single = Array.new
@single.push(self)
@items = @single + self.relatives
json.array!(@items) do |item|
json.adjacencies item.synapses2.delete_if{|synapse| not @items.include?(Item.find_by_id(synapse.node1_id))} do |json, synapse|
json.nodeTo synapse.node1_id
json.nodeFrom synapse.node2_id
@synapsedata = Hash.new
@synapsedata['desc'] = synapse.desc
json.data @synapsedata
end
@itemdata = Hash.new
@itemdata['desc'] = item.desc
@itemdata['link'] = item.link
json.data @itemdata
json.id item.id
json.name item.name
end
end
end
end