lib/api/v3/utilities/custom_field_injector/link_value_getter.rb
#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2024 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# See COPYRIGHT and LICENSE files for more details.
#++
module API
module V3
module Utilities
class CustomFieldInjector
module LinkValueGetter
def self.link_for(custom_field)
->(*) do
next unless represented.available_custom_fields.include?(custom_field)
# we can't use the generated accessor (e.g. represented.send :custom_field_1) here,
# because we need to generate a link even if the id does not belong to an existing
# object (that behaviour is only required for form payloads)
values = Methods.link_value_getter_values represented, custom_field
if custom_field.multi_value?
values
else
values.first || Methods.single_empty_value
end
end
end
##
# Since the block returned by .new above is `instance_exec`'d some place else we need to
# refer to this module in order to be able to split up the logic into methods.
module Methods
extend API::V3::Utilities::PathHelper
module_function
def link_value_getter_values(represented, custom_field)
Array(represented.custom_value_for(custom_field)).flat_map do |custom_value|
if custom_value && custom_value.value.present?
title = link_value_title(custom_value)
[{
title:,
href: link_value_href(custom_field, custom_value)
}]
else
[]
end
end
end
def link_value_href(custom_field, custom_value)
# only use ids for url
return unless custom_value.value.to_i.to_s == custom_value.value
path_method = link_value_path_method(custom_field, custom_value)
api_v3_paths.send(path_method, custom_value.value)
end
def link_value_path_method(custom_field, custom_value)
case custom_field.field_format
when "user"
derive_principal_path_method(custom_value)
when "list"
:custom_option
else
custom_field.field_format
end
end
def derive_principal_path_method(custom_value)
API::V3::Principals::PrincipalType.for(custom_value.typed_value)
end
def link_value_title(custom_value)
if custom_value.typed_value.respond_to?(:name)
custom_value.typed_value.name
else
custom_value.typed_value
end
end
##
# While multi value custom fields are expected to simply return an empty array
# if they have no value a normal single value custom field is expected by
# the frontend to return a single element with a null href and title.
def single_empty_value
{ href: nil, title: nil }
end
end
end
end
end
end
end