153 lines
4.6 KiB
Ruby
153 lines
4.6 KiB
Ruby
class Item < ActiveRecord::Base
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include ItemsHelper
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belongs_to :user
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has_many :synapses1, :class_name => 'Synapse', :foreign_key => 'node1_id'
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has_many :synapses2, :class_name => 'Synapse', :foreign_key => 'node2_id'
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has_many :items1, :through => :synapses2, :source => :item1
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has_many :items2, :through => :synapses1, :source => :item2
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has_many :mappings
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has_many :maps, :through => :mappings
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def synapses
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synapses1 + synapses2
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end
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def relatives
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items1 + items2
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end
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belongs_to :item_category
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# has no viewable synapses helper function
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def has_viewable_synapses(current)
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result = false
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self.synapses.each do |synapse|
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if synapse.authorize_to_view(current)
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result = true
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end
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end
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return result
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end
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###### JSON ######
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def self_as_json
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Jbuilder.encode do |json|
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@itemdata = Hash.new
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@itemdata['$desc'] = self.desc
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@itemdata['$link'] = self.link
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@itemdata['$itemcatname'] = self.item_category.name
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@itemdata['$userid'] = self.user.id
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@itemdata['$username'] = self.user.name
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json.data @itemdata
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json.id self.id
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json.name self.name
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end
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end
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#build a json object of everything connected to a specified node
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def network_as_json(current)
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Jbuilder.encode do |json|
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@items = network(self,nil,4)
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if @items.count > 1
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json.array!(@items.delete_if{|item| (not item.authorize_to_view(current)) || (not item.has_viewable_synapses(current))}) do |item|
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json.adjacencies item.synapses1.delete_if{|synapse| (not @items.include?(synapse.item2)) || (not synapse.authorize_to_view(current)) || (not synapse.item2.authorize_to_view(current)) } do |json, synapse|
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json.nodeTo synapse.node2_id
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json.nodeFrom synapse.node1_id
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@synapsedata = Hash.new
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@synapsedata['$desc'] = synapse.desc
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@synapsedata['$showDesc'] = false
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@synapsedata['$category'] = synapse.category
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@synapsedata['$id'] = synapse.id
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@synapsedata['$userid'] = synapse.user.id
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@synapsedata['$username'] = synapse.user.name
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@synapsedata['$direction'] = [synapse.node1_id.to_s(), synapse.node2_id.to_s()]
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json.data @synapsedata
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end
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@itemdata = Hash.new
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@itemdata['$desc'] = item.desc
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@itemdata['$link'] = item.link
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@itemdata['$itemcatname'] = item.item_category.name
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@itemdata['$userid'] = item.user.id
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@itemdata['$username'] = item.user.name
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json.data @itemdata
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json.id item.id
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json.name item.name
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end
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elsif @items.count == 1
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json.array!(@items) do |item|
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@itemdata = Hash.new
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@itemdata['$desc'] = item.desc
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@itemdata['$link'] = item.link
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@itemdata['$itemcatname'] = item.item_category.name
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@itemdata['$userid'] = item.user.id
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@itemdata['$username'] = item.user.name
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json.data @itemdata
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json.id item.id
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json.name item.name
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end
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end
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end
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end
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##### PERMISSIONS ######
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scope :visibleToUser, lambda { |current, user|
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if user != nil
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if user != current
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Item.find_all_by_user_id_and_permission(user.id, "commons") | Item.find_all_by_user_id_and_permission(user.id, "public")
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elsif user == current
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Item.find_all_by_user_id_and_permission(user.id, "commons") | Item.find_all_by_user_id_and_permission(user.id, "public") | current.items.where(:permission => "private")
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end
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elsif (current != nil && user == nil)
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Item.find_all_by_permission("commons") | Item.find_all_by_permission("public") | current.items.where(:permission => "private")
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elsif (current == nil)
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Item.find_all_by_permission("commons") | Item.find_all_by_permission("public")
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end
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}
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# returns false if user not allowed to 'show' Topic, Synapse, or Map
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def authorize_to_show(user)
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if (self.permission == "private" && self.user != user)
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return false
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end
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return self
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end
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# returns false if user not allowed to 'edit' Topic, Synapse, or Map
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def authorize_to_edit(user)
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if (self.permission == "private" && self.user != user)
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return false
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elsif (self.permission == "public" && self.user != user)
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return false
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end
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return self
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end
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# returns Boolean if user allowed to view Topic, Synapse, or Map
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def authorize_to_view(user)
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if (self.permission == "private" && self.user != user)
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return false
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end
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return true
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end
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# returns Boolean based on whether user has permissions to edit or not
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def authorize_linkto_edit(user)
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if (self.user == user)
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return true
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elsif (self.permission == "commons")
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return true
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end
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return false
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end
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end
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