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# frozen_string_literal: true
module WorkItems
class ParentLink < ApplicationRecord
self.table_name = 'work_item_parent_links'
MAX_CHILDREN = 100
belongs_to :work_item
belongs_to :work_item_parent, class_name: 'WorkItem'
validates :work_item, :work_item_parent, presence: true
validate :validate_child_type
validate :validate_parent_type
validate :validate_same_project
validate :validate_max_children
private
def validate_child_type
return unless work_item
unless work_item.task?
errors.add :work_item, _('Only Task can be assigned as a child in hierarchy.')
end
end
def validate_parent_type
return unless work_item_parent
unless work_item_parent.issue?
errors.add :work_item_parent, _('Only Issue can be parent of Task.')
end
end
def validate_same_project
return if work_item.nil? || work_item_parent.nil?
if work_item.resource_parent != work_item_parent.resource_parent
errors.add :work_item_parent, _('Parent must be in the same project as child.')
end
end
def validate_max_children
return unless work_item_parent
max = persisted? ? MAX_CHILDREN : MAX_CHILDREN - 1
if work_item_parent.child_links.count > max
errors.add :work_item_parent, _('Parent already has maximum number of children.')
end
end
end
end
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