Class: GraphQL::Schema::Directive::Transform
- Inherits:
-
GraphQL::Schema::Directive
- Object
- Member
- GraphQL::Schema::Directive
- GraphQL::Schema::Directive::Transform
- Defined in:
- lib/graphql/schema/directive/transform.rb
Overview
An example directive to show how you might interact with the runtime.
This directive takes the return value of the tagged part of the query, and if the named transform is whitelisted and applies to the return value, it’s applied by calling a method with that name.
Constant Summary collapse
- TRANSFORMS =
[ "upcase", "downcase", # ?? ]
Constants inherited from GraphQL::Schema::Directive
DEFAULT_DEPRECATION_REASON, LOCATIONS, LOCATION_DESCRIPTIONS
Constants included from Member::HasArguments
Member::HasArguments::NO_ARGUMENTS
Constants included from Member::GraphQLTypeNames
Member::GraphQLTypeNames::Boolean, Member::GraphQLTypeNames::ID, Member::GraphQLTypeNames::Int
Instance Attribute Summary
Attributes inherited from GraphQL::Schema::Directive
Attributes included from Member::BaseDSLMethods
#default_graphql_name, #graphql_name
Attributes included from Member::RelayShortcuts
#connection_type, #connection_type_class, #edge_type, #edge_type_class
Attributes included from Member::HasAstNode
Class Method Summary collapse
-
.resolve(object, arguments, context) ⇒ Object
Implement the Directive API.
Methods inherited from GraphQL::Schema::Directive
default_directive, default_directive?, default_graphql_name, #graphql_name, include?, #initialize, locations, on_field?, on_fragment?, on_operation?, path, repeatable, repeatable?, resolve_each, static_include?
Methods included from Member::HasArguments
#add_argument, #all_argument_definitions, #any_arguments?, #argument, #argument_class, #arguments, #arguments_statically_coercible?, #coerce_arguments, #get_argument, #own_arguments, #remove_argument, #validate_directive_argument
Methods included from Member::HasArguments::HasDirectiveArguments
Methods included from Member::BaseDSLMethods
#authorized?, #default_relay, #description, #introspection, #introspection?, #mutation, #name, #visible?
Methods included from Member::BaseDSLMethods::ConfigurationExtension
Methods included from Member::TypeSystemHelpers
#initialize, #kind, #list?, #non_null?, #to_list_type, #to_non_null_type, #to_type_signature
Methods included from Member::Scoped
#inherited, #reauthorize_scoped_objects, #scope_items
Methods included from Member::HasPath
Methods included from Member::HasAstNode
Methods included from Member::HasDirectives
add_directive, #directive, #directives, get_directives, #inherited, #remove_directive, remove_directive
Constructor Details
This class inherits a constructor from GraphQL::Schema::Directive
Class Method Details
.resolve(object, arguments, context) ⇒ Object
Implement the Directive API
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# File 'lib/graphql/schema/directive/transform.rb', line 36 def self.resolve(object, arguments, context) path = context.namespace(:interpreter)[:current_path] return_value = yield transform_name = arguments[:by] if TRANSFORMS.include?(transform_name) && return_value.respond_to?(transform_name) return_value = return_value.public_send(transform_name) response = context.namespace(:interpreter_runtime)[:runtime].final_result *keys, last = path keys.each do |key| if response && (response = response[key]) next else break end end if response response[last] = return_value end nil end end |