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

150 lines
3.8 KiB
Ruby

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
after_touch :save_screenshot
# 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, :created_at, :updated_at])
json[:created_at] = self.created_at_str
json[:updated_at] = self.updated_at_str
json
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 save_screenshot
# TODO - this will grab a map every single frickin' time a map is touched
# we need a system to throttle the amount to 1/hour or something like that
# maybe have a flag - last time this map was screenshotted
# don't update if it was less than an hour ago
# except this has the issue of a user updating map 7x, and it only screenshotting after
# the first time. We only want it to screenhsot the 7th time.
# We need to store a timestamp somewhere and do processing every hour, I think.
GrabMapScreenshotWorker.perform_async(self.id)
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