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

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class Map < ActiveRecord::Base
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belongs_to :user
has_many :topicmappings, -> { Mapping.topicmapping }, class_name: :Mapping, dependent: :destroy
has_many :synapsemappings, -> { Mapping.synapsemapping }, class_name: :Mapping, dependent: :destroy
has_many :topics, through: :topicmappings, source: :mappable, source_type: "Topic"
has_many :synapses, through: :synapsemappings, source: :mappable, source_type: "Synapse"
# This method associates the attribute ":image" with a file attachment
has_attached_file :screenshot, :styles => {
:thumb => ['188x126#', :png]
#:full => ['940x630#', :png]
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},
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:default_url => ApplicationController.helpers.asset_path('missing-map.png')
# Validate the attached image is image/jpg, image/png, etc
validates_attachment_content_type :screenshot, :content_type => /\Aimage\/.*\Z/
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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
def contributor_count
self.contributors.length
end
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def screenshot_url
self.screenshot.url(:thumb)
end
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def created_at_str
self.created_at.strftime("%m/%d/%Y")
end
def updated_at_str
self.updated_at.strftime("%m/%d/%Y")
end
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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
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json
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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)
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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)
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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
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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')
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self.screenshot = data
self.save
end
end