metamaps--metamaps/app/models/synapse.rb

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class Synapse < ActiveRecord::Base
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belongs_to :user
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belongs_to :topic1, :class_name => "Topic", :foreign_key => "node1_id"
belongs_to :topic2, :class_name => "Topic", :foreign_key => "node2_id"
has_many :mappings, as: :mappable, dependent: :destroy
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has_many :maps, :through => :mappings
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validates :desc, length: { minimum: 0, allow_nil: false }
def user_name
self.user.name
end
def user_image
self.user.image.url
end
def as_json(options={})
super(:methods =>[:user_name, :user_image])
end
##### PERMISSIONS ######
# 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
def authorize_to_delete(user)
if (self.user == user || user.admin)
return self
end
return false
end
end