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64 lines
1.6 KiB
64 lines
1.6 KiB
require 'active_record'
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class Carto::VisualizationQueryOrderer
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DEFAULT_ORDER_DIRECTION = 'asc'.freeze
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SUPPORTED_OFFDATABASE_ORDERS = %w(size mapviews likes estimated_row_count).freeze
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VISUALIZATION_TABLE_ORDERS = %w(name updated_at privacy).freeze
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DEPENDENT_VISUALIZATIONS_ORDER_CLAUSE = "coalesce(dependent_visualization_count, 0)".freeze
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FAVORITED_ORDER_CLAUSE = "(likes.actor IS NOT NULL)".freeze
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def initialize(query)
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@query = query
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end
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def order(order, direction = "")
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return @query unless order
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prepare_order_params(order, direction)
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if offdatabase_orders.empty?
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@query.order(database_orders)
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else
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Carto::OffdatabaseQueryAdapter.new(@query, offdatabase_orders)
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end
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end
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private
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def prepare_order_params(order_string, direction_string)
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directions = direction_string.split(',')
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orders = order_string.split(',')
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@order_hash = orders.zip(directions).map { |order, direction|
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order = custom_order_clause(order)
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direction ||= directions[0] || DEFAULT_ORDER_DIRECTION
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[order, direction]
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}.to_h
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end
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def custom_order_clause(order)
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case order
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when 'favorited'
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FAVORITED_ORDER_CLAUSE
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when 'dependent_visualizations'
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DEPENDENT_VISUALIZATIONS_ORDER_CLAUSE
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when *VISUALIZATION_TABLE_ORDERS
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"visualizations.#{order}"
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else
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order
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end
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end
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def database_orders
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db_order_hash = @order_hash.except(*SUPPORTED_OFFDATABASE_ORDERS)
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db_order_hash.map { |key, value| "#{key} #{value}" }.join(",")
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end
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def offdatabase_orders
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@order_hash.slice(*SUPPORTED_OFFDATABASE_ORDERS)
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end
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end
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