53 lines
1.2 KiB
Ruby
53 lines
1.2 KiB
Ruby
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module Boards
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module Lists
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class MoveService
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def initialize(project, params = {})
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@board = project.board
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@params = params.dup
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end
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def execute
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return false if new_position.blank?
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return false if new_position == old_position
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list.with_lock do
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reorder_intermediate_lists
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update_list_position
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end
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end
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private
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attr_reader :board, :params
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def list
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@list ||= board.lists.find(params[:list_id])
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end
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def old_position
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@old_position ||= list.position
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end
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def new_position
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@new_position ||= params[:position]
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end
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def reorder_intermediate_lists
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if old_position < new_position
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board.lists.where('position > ?', old_position)
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.where('position <= ?', new_position)
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.update_all('position = position - 1')
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else
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board.lists.where('position >= ?', new_position)
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.where('position < ?', old_position)
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.update_all('position = position + 1')
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end
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end
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def update_list_position
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list.update_attribute(:position, new_position)
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end
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end
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end
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end
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