metamaps--metamaps/app/models/map.rb

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class Map < ActiveRecord::Base
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belongs_to :user
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has_many :topicmappings, :class_name => 'Mapping', :conditions => {:category => 'Topic'}
has_many :synapsemappings, :class_name => 'Mapping', :conditions => {:category => 'Synapse'}
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has_many :topics, :through => :topicmappings
has_many :synapses, :through => :synapsemappings
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def mappings
topicmappings + synapsemappings
end
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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
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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
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def as_json(options={})
super(:methods =>[:user_name, :user_image, :topic_count, :synapse_count])
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end
##### PERMISSIONS ######
# returns false if user not allowed to 'show' Topic, Synapse, or Map
def authorize_to_show(user)
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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)
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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)
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if (self.permission == "private" && self.user != user)
return false
end
return true
end
end