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module Mutations
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class BaseMutation < GraphQL::Schema::RelayClassicMutation
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class << self
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def argument(*args, **kwargs, &block)
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required = kwargs.key?(:required) ? kwargs[:required] : attribute_required?(args.first)
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super(*args, **kwargs.except(:required), required: required, &block)
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end
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def resource_class(new_resource_class = nil)
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if new_resource_class
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@resource_class = new_resource_class
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else
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@resource_class ||= "::#{self.to_s.split('::')[-2].singularize}".safe_constantize
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end
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end
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private
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def attribute_required?(attribute)
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GraphqlAttribute.for(resource_class).required?(attribute)
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end
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end
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object_class Types::BaseObject
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input_object_class Types::BaseInputObject
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private
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delegate :resource_class, to: :class
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def authorize!(resource, action)
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user = context[:current_user]
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authorizer = Authorizer.new(user)
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permission_name = resource.permission_name(action)
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return if action == :create && authorizer.can?(permission_name)
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return if action != :create && authorizer.can?(permission_name, resource)
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raise GraphQL::ExecutionError.new(
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_('Unauthorized. You do not have the required permission %s.') % permission_name
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)
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end
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def validate_object(resource)
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unless resource.is_a?(resource_class)
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raise GraphQL::ExecutionError.new("Resource mismatch, expected #{resource_class.name}, got #{resource.class.name}")
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end
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end
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def load_object_by(id:)
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object = GraphQL::Batch.batch { ForemanGraphqlSchema.object_from_id(id, context) }
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raise GraphQL::ExecutionError.new(_('Could not resolve ID.')) unless object
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validate_object(object)
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object
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end
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def save_object(resource)
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User.as(context[:current_user]) do
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errors = if resource.save
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[]
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else
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map_errors_to_path(resource)
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end
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{
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result_key => resource,
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errors: errors,
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}
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end
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end
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def map_errors_to_path(resource)
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resource.errors.map do |attribute, message|
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{
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path: ['attributes', attribute.to_s.camelize(:lower)],
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message: message,
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}
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end
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end
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def result_key
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keys = self.class.fields.select { |field_name, field| field.owner == self.class }.keys.map(&:to_sym)
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raise GraphQL::ExecutionError.new("Could not detect result key for #{self.class}. Did you define a result field for the mutation?") unless keys.any?
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raise GraphQL::ExecutionError.new("Could not detect result key for #{self.class}. Possible values are #{keys.to_sentence}.") if keys.size > 1
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keys.first
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end
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end
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end
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