metamaps--metamaps/app/models/topic.rb
2016-02-07 13:12:18 +08:00

149 lines
3.6 KiB
Ruby

class Topic < ActiveRecord::Base
include TopicsHelper
belongs_to :user
has_many :synapses1, :class_name => 'Synapse', :foreign_key => 'node1_id', dependent: :destroy
has_many :synapses2, :class_name => 'Synapse', :foreign_key => 'node2_id', dependent: :destroy
has_many :topics1, :through => :synapses2, :source => :topic1
has_many :topics2, :through => :synapses1, :source => :topic2
has_many :mappings, as: :mappable, dependent: :destroy
has_many :maps, :through => :mappings
validates :permission, presence: true
validates :permission, inclusion: { in: Perm::ISSIONS.map(&:to_s) }
# This method associates the attribute ":image" with a file attachment
has_attached_file :image
#, styles: {
# thumb: '100x100>',
# square: '200x200#',
# medium: '300x300>'
#}
# Validate the attached image is image/jpg, image/png, etc
validates_attachment_content_type :image, :content_type => /\Aimage\/.*\Z/
# This method associates the attribute ":image" with a file attachment
has_attached_file :audio
# Validate the attached audio is audio/wav, audio/mp3, etc
validates_attachment_content_type :audio, :content_type => /\Aaudio\/.*\Z/
def synapses
synapses1 + synapses2
end
def relatives
topics1 + topics2
end
belongs_to :metacode
def user_name
user.name
end
def user_image
user.image.url
end
def map_count
maps.count
end
def synapse_count
synapses.count
end
def inmaps
maps.map(&:name)
end
def inmapsLinks
maps.map(&:id)
end
def as_json(options={})
super(:methods =>[:user_name, :user_image, :map_count, :synapse_count, :inmaps, :inmapsLinks])
end
def topic_autocomplete_method
"Get: #{self.name}"
end
def mk_permission
Perm.short(permission)
end
# has no viewable synapses helper function
def has_viewable_synapses(current)
result = false
synapses.each do |synapse|
if synapse.authorize_to_show(current)
result = true
end
end
result
end
# TODO move to a decorator?
def synapses_csv(output_format = 'array')
output = []
synapses.each do |synapse|
if synapse.category == 'from-to'
if synapse.node1_id == id
output << synapse.node1_id.to_s + '->' + synapse.node2_id.to_s
elsif synapse.node2_id == id
output << synapse.node2_id.to_s + '<-' + synapse.node1_id.to_s
else
fail 'invalid synapse on topic in synapse_csv'
end
elsif synapse.category == 'both'
if synapse.node1_id == id
output << synapse.node1_id.to_s + '<->' + synapse.node2_id.to_s
elsif synapse.node2_id == id
output << synapse.node2_id.to_s + '<->' + synapse.node1_id.to_s
else
fail 'invalid synapse on topic in synapse_csv'
end
end
end
if output_format == 'array'
return output
elsif output_format == 'text'
return output.join('; ')
else
fail 'invalid argument to synapses_csv'
end
output
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