38 lines
1.1 KiB
Ruby
38 lines
1.1 KiB
Ruby
|
require 'active_record'
|
||
|
|
require_dependency 'carto/visualization_backup_service'
|
||
|
|
|
||
|
|
module Carto
|
||
|
|
class LayersMap < ActiveRecord::Base
|
||
|
|
include Carto::VisualizationBackupService
|
||
|
|
|
||
|
|
belongs_to :layer, class_name: Carto::Layer
|
||
|
|
belongs_to :map, class_name: Carto::Map
|
||
|
|
|
||
|
|
before_destroy :backup_visualization
|
||
|
|
after_destroy :invalidate_map, :destroy_layer
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def invalidate_map
|
||
|
|
map.notify_map_change if map
|
||
|
|
end
|
||
|
|
|
||
|
|
def destroy_layer
|
||
|
|
# Destroy the actual layer when removing it from the map (as layers cannot be in multiple maps)
|
||
|
|
# This is a workaround for a bug in Rails 4 (https://github.com/rails/rails/issues/13609)
|
||
|
|
# A better way to do this is with `dependent: :destroy` on the association
|
||
|
|
return if @layer_destroyed || layer.destroyed?
|
||
|
|
@layer_destroyed = true
|
||
|
|
layer.destroy
|
||
|
|
end
|
||
|
|
|
||
|
|
def backup_visualization
|
||
|
|
return if !map.visualization || map.visualization.destroyed? || @layer_destroyed || layer.destroyed?
|
||
|
|
create_visualization_backup(
|
||
|
|
visualization: map.visualization,
|
||
|
|
category: Carto::VisualizationBackup::CATEGORY_LAYER
|
||
|
|
)
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|