293 lines
8 KiB
Ruby
293 lines
8 KiB
Ruby
# Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
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class Link < ApplicationModel
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belongs_to :link_type, class_name: 'Link::Type', optional: true
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belongs_to :link_object, class_name: 'Link::Object', optional: true
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after_destroy :touch_link_references
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@map = {
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'normal' => 'normal',
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'parent' => 'child',
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'child' => 'parent',
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}
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=begin
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links = Link.list(
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link_object: 'Ticket',
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link_object_value: 1
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)
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=end
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def self.list(data)
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linkobject = link_object_get(name: data[:link_object])
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return if !linkobject
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items = []
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# get links for one site
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list = Link.where(
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'link_object_source_id = ? AND link_object_source_value = ?', linkobject.id, data[:link_object_value]
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)
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list.each do |item|
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link = {}
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link['link_type'] = @map[ Link::Type.find(item.link_type_id).name ]
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link['link_object'] = Link::Object.find(item.link_object_target_id).name
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link['link_object_value'] = item.link_object_target_value
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items.push link
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end
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# get links for the other site
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list = Link.where(
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'link_object_target_id = ? AND link_object_target_value = ?', linkobject.id, data[:link_object_value]
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)
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list.each do |item|
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link = {}
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link['link_type'] = Link::Type.find(item.link_type_id).name
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link['link_object'] = Link::Object.find(item.link_object_source_id).name
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link['link_object_value'] = item.link_object_source_value
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items.push link
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end
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return items if data[:user].blank?
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items.select do |item|
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authorized_item?(data[:user], item)
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end
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end
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=begin
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Link.add(
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link_type: 'normal',
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link_object_source: 'Ticket',
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link_object_source_value: 6,
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link_object_target: 'Ticket',
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link_object_target_value: 31
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)
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Link.add(
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link_types_id: 12,
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link_object_source_id: 1,
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link_object_source_value: 1,
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link_object_target_id: 1,
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link_object_target_value: 1
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)
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=end
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def self.add(data)
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if data.key?(:link_type)
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linktype = link_type_get(name: data[:link_type])
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data[:link_type_id] = linktype.id
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data.delete(:link_type)
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end
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if data.key?(:link_object_source)
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linkobject = link_object_get(name: data[:link_object_source])
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data[:link_object_source_id] = linkobject.id
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touch_reference_by_params(
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object: data[:link_object_source],
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o_id: data[:link_object_source_value],
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)
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data.delete(:link_object_source)
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end
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if data.key?(:link_object_target)
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linkobject = link_object_get(name: data[:link_object_target])
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data[:link_object_target_id] = linkobject.id
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touch_reference_by_params(
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object: data[:link_object_target],
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o_id: data[:link_object_target_value],
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)
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data.delete(:link_object_target)
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end
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Link.create(data)
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end
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=begin
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Link.remove(
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link_type: 'normal',
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link_object_source: 'Ticket',
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link_object_source_value: 6,
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link_object_target: 'Ticket',
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link_object_target_value: 31
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)
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=end
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def self.remove(data)
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if data.key?(:link_object_source)
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linkobject = link_object_get(name: data[:link_object_source])
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data[:link_object_source_id] = linkobject.id
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end
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if data.key?(:link_object_target)
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linkobject = link_object_get(name: data[:link_object_target])
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data[:link_object_target_id] = linkobject.id
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end
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# from one site
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if data.key?(:link_type)
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linktype = link_type_get(name: data[:link_type])
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data[:link_type_id] = linktype.id
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end
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Link.where(
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link_type_id: data[:link_type_id],
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link_object_source_id: data[:link_object_source_id],
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link_object_source_value: data[:link_object_source_value],
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link_object_target_id: data[:link_object_target_id],
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link_object_target_value: data[:link_object_target_value]
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).destroy_all
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# from the other site
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if data.key?(:link_type)
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linktype = link_type_get(name: @map[ data[:link_type] ])
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data[:link_type_id] = linktype.id
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end
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Link.where(
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link_type_id: data[:link_type_id],
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link_object_target_id: data[:link_object_source_id],
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link_object_target_value: data[:link_object_source_value],
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link_object_source_id: data[:link_object_target_id],
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link_object_source_value: data[:link_object_target_value]
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).destroy_all
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end
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=begin
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Link.remove_all(
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link_object: 'Ticket',
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link_object_value: 6,
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)
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=end
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def self.remove_all(data)
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if data.key?(:link_object)
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linkobject = link_object_get(name: data[:link_object])
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data[:link_object_id] = linkobject.id
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end
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Link.where(
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link_object_target_id: data[:link_object_id],
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link_object_target_value: data[:link_object_value],
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).destroy_all
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Link.where(
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link_object_source_id: data[:link_object_id],
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link_object_source_value: data[:link_object_value],
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).destroy_all
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true
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end
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def touch_link_references
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Link.touch_reference_by_params(
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object: Link::Object.lookup(id: link_object_source_id).name,
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o_id: link_object_source_value,
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)
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Link.touch_reference_by_params(
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object: Link::Object.lookup(id: link_object_target_id).name,
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o_id: link_object_target_value,
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)
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end
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def self.link_type_get(data)
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linktype = Link::Type.find_by(name: data[:name])
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if !linktype
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linktype = Link::Type.create(name: data[:name])
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end
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linktype
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end
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def self.link_object_get(data)
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linkobject = Link::Object.find_by(name: data[:name])
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if !linkobject
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linkobject = Link::Object.create(name: data[:name])
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end
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linkobject
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end
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=begin
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Update assets according to given references list
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@param assets [Hash] hash with assets
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@param link_references [Array<Hash>] @see #list
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@return [Hash] assets including linked items
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@example Link.reduce_assets(assets, link_references)
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=end
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def self.reduce_assets(assets, link_references)
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link_items = link_references
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.filter_map { |elem| lookup_linked_object(elem) }
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ApplicationModel::CanAssets.reduce(link_items, assets)
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end
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def self.lookup_linked_object(elem)
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klass = elem['link_object'].safe_constantize
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id = elem['link_object_value']
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case klass.to_s
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when KnowledgeBase::Answer::Translation.to_s
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Setting.get('kb_active') ? klass.lookup(id: id) : nil
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else
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klass&.lookup(id: id)
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end
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end
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def self.duplicates(object1_id:, object1_value:, object2_value:, object2_id: nil)
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if !object2_id
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object2_id = object1_id
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end
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Link.joins(', links as linksb').where('
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(
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links.link_type_id = linksb.link_type_id
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AND links.link_object_source_id = linksb.link_object_source_id
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AND links.link_object_source_value = linksb.link_object_source_value
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AND links.link_object_target_id = ?
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AND linksb.link_object_target_id = ?
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AND links.link_object_target_value = ?
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AND linksb.link_object_target_value = ?
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)
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OR
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(
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links.link_type_id = linksb.link_type_id
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AND links.link_object_target_id = linksb.link_object_target_id
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AND links.link_object_target_value = linksb.link_object_target_value
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AND links.link_object_source_id = ?
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AND linksb.link_object_source_id = ?
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AND links.link_object_source_value = ?
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AND linksb.link_object_source_value = ?
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)
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', object1_id, object2_id, object1_value, object2_value, object1_id, object2_id, object1_value, object2_value)
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end
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def self.authorized_item?(user, item)
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record = item['link_object'].constantize.lookup(id: item['link_object_value'])
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# non-ID records are not checked for authorization
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return true if record.blank?
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Pundit.authorize(user, record, :show?).present?
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rescue Pundit::NotAuthorizedError
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false
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rescue NameError, Pundit::NotDefinedError
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# NameError: no Model means no authorization check possible
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# Pundit::NotDefinedError: no Policy means no authorization check necessary
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true
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end
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end
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