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 # This method associates the attribute ":image" with a file attachment has_attached_file :screenshot, :styles => { :thumb => ['188x126#', :png] #:full => ['940x630#', :png] }, :default_url => "/assets/missing-map.png" # Validate the attached image is image/jpg, image/png, etc validates_attachment_content_type :screenshot, :content_type => /\Aimage\/.*\Z/ 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 #return an array of the contributors to the map def contributors contributors = [] self.mappings.each do |m| contributors.push(m.user) if !contributors.include?(m.user) end return contributors end def topic_count self.topics.length end def synapse_count self.synapses.length end def user_name self.user.name end def user_image self.user.image.url end def contributor_count self.contributors.length end def screenshot_url self.screenshot.url(:thumb) end def created_at_str self.created_at.strftime("%m/%d/%Y") end def updated_at_str self.updated_at.strftime("%m/%d/%Y") end def as_json(options={}) json = super(:methods =>[:user_name, :user_image, :topic_count, :synapse_count, :contributor_count, :screenshot_url], :except => [:screenshot_content_type, :screenshot_file_size, :screenshot_file_name, :screenshot_updated_at]) json[:created_at_clean] = self.created_at_str json[:updated_at_clean] = self.updated_at_str json end def to_csv(options = {}) CSV.generate(options) do |csv| csv << ["id", "name", "permission", "user.name"] self.topics.each do |topic| csv << [ topic.id, topic.name, topic.permission, topic.user.name ] end end end ##### PERMISSIONS ###### def authorize_to_delete(user) if (self.user != user) return false end return self 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 !user return false elsif (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 def decode_base64(imgBase64) decoded_data = Base64.decode64(imgBase64) data = StringIO.new(decoded_data) data.class_eval do attr_accessor :content_type, :original_filename end data.content_type = "image/png" data.original_filename = File.basename('map-' + self.id.to_s + '-screenshot.png') self.screenshot = data self.save end end