app/controllers/concepts_movement_controller.rb
# encoding: UTF-8
# Copyright 2011-2015 innoQ Deutschland GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
class ConceptsMovementController < ApplicationController
include DatasetInitialization
def move
moved_concept = Iqvoc::Concept.base_class.find(params.require(:moved_node_id))
if moved_concept.published?
authorize! :branch, moved_concept
else
authorize! :update, moved_concept
end
moved_concept_version = concept_version(moved_concept)
ActiveRecord::Base.transaction do
if moved_concept_version.top_term?
# we move a top term deeper into the tree
moved_concept_version.update_attribute(:top_term, false)
new_parent_concept = Iqvoc::Concept.base_class.find(params.require(:new_parent_node_id))
create_new_relations(moved_concept_version, new_parent_concept)
elsif params['new_parent_node_id'].nil?
# we move a tree node to the top
moved_concept_version.update_attribute(:top_term, true)
old_parent_concept = Iqvoc::Concept.base_class.find(params.require(:old_parent_node_id))
destroy_relations(old_parent_concept, moved_concept_version)
else
# regular inner tree node movement
if params[:tree_action] == 'move' && Iqvoc::Concept.root_class.instance.mono_hierarchy?
old_parent_concept = Iqvoc::Concept.base_class.find(params.require(:old_parent_node_id))
destroy_relations(old_parent_concept, moved_concept_version)
end
new_parent_concept = Iqvoc::Concept.base_class.find(params.require(:new_parent_node_id))
# add new relations to concept version
create_new_relations(moved_concept_version, new_parent_concept)
end
end
render json: {new_node_id: moved_concept_version.id}
end
protected
def concept_params
params.require(:concept).permit!
end
# get concept to work with
# returns a new version of the concept or the current draft (if exists)
def concept_version(concept)
draft = Iqvoc::Concept.base_class.by_origin(concept.origin).unpublished
if draft.any?
# use current draft concept, there should be only one
result = draft.first
else
# create a new version
result = concept.branch
result.save!
end
result
end
def create_new_relations(moved_concept, new_parent)
Iqvoc::Concept.broader_relation_class.create! do |r|
r.owner = moved_concept
r.target = new_parent
end
Concept::Relation::SKOS::Narrower::Base.create! do |r|
r.owner = new_parent
r.target = moved_concept
end
end
def destroy_relations(owner, target)
relation = owner.narrower_relations.find_by(target_id: target.id)
relation.destroy! if relation
relation = target.broader_relations.find_by(target_id: owner.id)
relation.destroy! if relation
end
end