class Map < ActiveRecord::Base belongs_to :user has_many :topicmappings, :class_name => 'Mapping', :conditions => {:category => 'Topic'} has_many :synapsemappings, :class_name => 'Mapping', :conditions => {:category => 'Synapse'} has_many :topics, :through => :topicmappings has_many :synapses, :through => :synapsemappings def mappings topicmappings + synapsemappings end def mk_permission if self.permission == "commons" "co" elsif self.permission == "public" "pu" elsif self.permission == "private" "pr" end end ###### JSON ###### #build a json object of a map def self_as_json(current) Jbuilder.encode do |json| @topics = self.topics @synapses = self.synapses json.array!(@topics.delete_if{|topic| not topic.authorize_to_view(current)}) do |topic| #json.adjacencies topic.synapses2.delete_if{|synapse| (not @topics.include?(synapse.topic1)) || (not @synapses.include?(synapse)) || (not synapse.authorize_to_view(current)) || (not synapse.topic1.authorize_to_view(current)) } do |json, synapse| json.adjacencies topic.synapses1.delete_if{|synapse| (not @synapses.include?(synapse)) || (not @topics.include?(synapse.topic2)) || (not synapse.authorize_to_view(current)) || (not synapse.topic2.authorize_to_view(current)) } do |json, synapse| json.nodeTo synapse.node2_id json.nodeFrom synapse.node1_id @synapsedata = Hash.new @synapsedata['$desc'] = synapse.desc @synapsedata['$showDesc'] = false @synapsedata['$category'] = synapse.category @synapsedata['$id'] = synapse.id @synapsedata['$userid'] = synapse.user.id @synapsedata['$username'] = synapse.user.name @synapsedata['$direction'] = [synapse.node1_id.to_s(), synapse.node2_id.to_s()] @synapsedata['$permission'] = synapse.permission json.data @synapsedata end @inmaps = Array.new topic.maps.each do |map| @inmaps.push(map.id) end @topicdata = Hash.new @topicdata['$desc'] = topic.desc @topicdata['$link'] = topic.link @topicdata['$metacode'] = topic.metacode.name @topicdata['$inmaps'] = @inmaps @topicdata['$userid'] = topic.user.id @topicdata['$username'] = topic.user.name @mapping = Mapping.find_by_topic_id_and_map_id(topic.id,self.id) @topicdata['$xloc'] = @mapping.xloc @topicdata['$yloc'] = @mapping.yloc @topicdata['$mappingid'] = @mapping.id @topicdata['$permission'] = topic.permission json.data @topicdata json.id topic.id json.name topic.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