class Map < ActiveRecord::Base belongs_to :user has_many :itemmappings, :class_name => 'Mapping', :conditions => {:category => 'Item'} has_many :synapsemappings, :class_name => 'Mapping', :conditions => {:category => 'Synapse'} has_many :items, :through => :itemmappings has_many :synapses, :through => :synapsemappings def mappings itemmappings + synapsemappings end ###### JSON ###### #build a json object of a map def self_as_json(current) Jbuilder.encode do |json| @items = self.items @synapses = self.synapses json.array!(@items.delete_if{|item| not item.authorize_to_view(current)}) do |item| json.adjacencies item.synapses2.delete_if{|synapse| (not @items.include?(synapse.item1)) || (not @synapses.include?(synapse)) || (not synapse.authorize_to_view(current)) || (not synapse.item1.authorize_to_view(current)) } do |json, synapse| json.nodeTo synapse.node1_id json.nodeFrom synapse.node2_id @synapsedata = Hash.new @synapsedata['$desc'] = synapse.desc @synapsedata['$category'] = synapse.category @synapsedata['$userid'] = synapse.user.id @synapsedata['$username'] = synapse.user.name json.data @synapsedata end @itemdata = Hash.new @itemdata['$desc'] = item.desc @itemdata['$link'] = item.link @itemdata['$itemcatname'] = item.item_category.name @itemdata['$userid'] = item.user.id @itemdata['$username'] = item.user.name json.data @itemdata json.id item.id json.name item.name end end end ##### PERMISSIONS ###### scope :visibleToUser, lambda { |current, user| if user != nil if user != current Map.find_all_by_user_id_and_permission(user.id, "commons") | Map.find_all_by_user_id_and_permission(user.id, "public") elsif user == current Map.find_all_by_user_id_and_permission(user.id, "commons") | Map.find_all_by_user_id_and_permission(user.id, "public") | current.maps.where(:permission => "private") end elsif (current != nil && user == nil) Map.find_all_by_permission("commons") | Map.find_all_by_permission("public") | current.maps.where(:permission => "private") elsif (current == nil) Map.find_all_by_permission("commons") | Map.find_all_by_permission("public") end } # returns false if user not allowed to 'show' Topic, Synapse, or Map def authorize_to_show(user) if (self.permission == "private" && self.user != user) return false end return self end # returns false if user not allowed to 'edit' Topic, Synapse, or Map def authorize_to_edit(user) if (self.permission == "private" && self.user != user) return false elsif (self.permission == "public" && self.user != user) return false end return self end # returns Boolean if user allowed to view Topic, Synapse, or Map def authorize_to_view(user) if (self.permission == "private" && self.user != user) return false end return true end # returns Boolean based on whether user has permissions to edit or not def authorize_linkto_edit(user) if (self.user == user) return true elsif (self.permission == "commons") return true end return false end end