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