Module: GraphQL::Schema::Member::HasArguments Private

Included in:
Directive, Field, InputObject, Resolver
Defined in:
lib/graphql/schema/member/has_arguments.rb

This module is part of a private API. You should avoid using this module if possible, as it may be removed or be changed in the future.

Defined Under Namespace

Modules: ArgumentClassAccessor, ArgumentObjectLoader, ClassConfigured, FieldConfigured, HasDirectiveArguments

Constant Summary collapse

NO_ARGUMENTS =

This constant is part of a private API. You should avoid using this constant if possible, as it may be removed or be changed in the future. 

GraphQL::EmptyObjects::EMPTY_HASH

Instance Method Summary collapse

Instance Method Details

#add_argument(arg_defn) ⇒ GraphQL::Schema::Argument

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Register this argument with the class.

Parameters:

Returns:



80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 80

def add_argument(arg_defn)
  @own_arguments ||= {}
  prev_defn = @own_arguments[arg_defn.name]
  case prev_defn
  when nil
    @own_arguments[arg_defn.name] = arg_defn
  when Array
    prev_defn << arg_defn
  when GraphQL::Schema::Argument
    @own_arguments[arg_defn.name] = [prev_defn, arg_defn]
  else
    raise "Invariant: unexpected `@own_arguments[#{arg_defn.name.inspect}]`: #{prev_defn.inspect}"
  end
  arg_defn
end

#all_argument_definitions ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



232
233
234
235
236
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 232

def all_argument_definitions
  all_defns = own_arguments.values
  all_defns.flatten!
  all_defns
end

#any_arguments? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



125
126
127
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 125

def any_arguments?
  own_arguments.any?
end

#argument(*args, **kwargs, &block) ⇒ GraphQL::Schema::Argument

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns An instance of #argument_class, created from *args.

Returns:

See Also:

  • for parameters


19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 19

def argument(*args, **kwargs, &block)
  kwargs[:owner] = self
  loads = kwargs[:loads]
  if loads
    name = args[0]
    name_as_string = name.to_s

    inferred_arg_name = case name_as_string
    when /_id$/
      name_as_string.sub(/_id$/, "").to_sym
    when /_ids$/
      name_as_string.sub(/_ids$/, "")
        .sub(/([^s])$/, "\\1s")
        .to_sym
    else
      name
    end

    kwargs[:as] ||= inferred_arg_name
  end
  arg_defn = self.argument_class.new(*args, **kwargs, &block)
  add_argument(arg_defn)

  if self.is_a?(Class) && !method_defined?(:"load_#{arg_defn.keyword}")
    method_owner = if self < GraphQL::Schema::InputObject || self < GraphQL::Schema::Directive
      "self."
    elsif self < GraphQL::Schema::Resolver
      ""
    else
      raise "Unexpected argument owner: #{self}"
    end
    if loads && arg_defn.type.list?
      class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def #{method_owner}load_#{arg_defn.keyword}(values, context = nil)
        argument = get_argument("#{arg_defn.graphql_name}")
        (context || self.context).query.after_lazy(values) do |values2|
          GraphQL::Execution::Lazy.all(values2.map { |value| load_application_object(argument, value, context || self.context) })
        end
      end
      RUBY
    elsif loads
      class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def #{method_owner}load_#{arg_defn.keyword}(value, context = nil)
        argument = get_argument("#{arg_defn.graphql_name}")
        load_application_object(argument, value, context || self.context)
      end
      RUBY
    else
      class_eval <<-RUBY, __FILE__, __LINE__ + 1
      def #{method_owner}load_#{arg_defn.keyword}(value, _context = nil)
        value
      end
      RUBY
    end
  end
  arg_defn
end

#argument_class(new_arg_class = nil) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • new_arg_class (Class) (defaults to: nil) —

    A class to use for building argument definitions



251
252
253
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 251

def argument_class(new_arg_class = nil)
  self.class.argument_class(new_arg_class)
end

#arguments(context = GraphQL::Query::NullContext.instance) ⇒ Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions.

Returns:

  • (Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions) —

    Hash<String => GraphQL::Schema::Argument] Arguments defined on this thing, keyed by name. Includes inherited definitions



112
113
114
115
116
117
118
119
120
121
122
123
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 112

def arguments(context = GraphQL::Query::NullContext.instance)
  if own_arguments.any?
    own_arguments_that_apply = {}
    own_arguments.each do |name, args_entry|
      if (visible_defn = Warden.visible_entry?(:visible_argument?, args_entry, context))
        own_arguments_that_apply[visible_defn.graphql_name] = visible_defn
      end
    end
  end
  # might be nil if there are actually no arguments
  own_arguments_that_apply || own_arguments
end

#arguments_statically_coercible? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:



334
335
336
337
338
339
340
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 334

def arguments_statically_coercible?
  if defined?(@arguments_statically_coercible) && !@arguments_statically_coercible.nil?
    @arguments_statically_coercible
  else
    @arguments_statically_coercible = all_argument_definitions.all?(&:statically_coercible?)
  end
end

#coerce_arguments(parent_object, values, context) {|Interpreter::Arguments, Execution::Lazy<Interpeter::Arguments>| ... } ⇒ Interpreter::Arguments, Execution::Lazy<Interpeter::Arguments>

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

If given a block, it will eventually yield the loaded args to the block.

If no block is given, it will immediately dataload (but might return a Lazy).

Parameters:

Yields:

Returns:



264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 264

def coerce_arguments(parent_object, values, context, &block)
  # Cache this hash to avoid re-merging it
  arg_defns = context.warden.arguments(self)
  total_args_count = arg_defns.size

  finished_args = nil
  prepare_finished_args = -> {
    if total_args_count == 0
      finished_args = GraphQL::Execution::Interpreter::Arguments::EMPTY
      if block_given?
        block.call(finished_args)
      end
    else
      argument_values = {}
      resolved_args_count = 0
      raised_error = false
      arg_defns.each do |arg_defn|
        context.dataloader.append_job do
          begin
            arg_defn.coerce_into_values(parent_object, values, context, argument_values)
          rescue GraphQL::ExecutionError, GraphQL::UnauthorizedError => err
            raised_error = true
            finished_args = err
            if block_given?
              block.call(finished_args)
            end
          end

          resolved_args_count += 1
          if resolved_args_count == total_args_count && !raised_error
            finished_args = context.schema.after_any_lazies(argument_values.values) {
              GraphQL::Execution::Interpreter::Arguments.new(
                argument_values: argument_values,
              )
            }
            if block_given?
              block.call(finished_args)
            end
          end
        end
      end
    end
  }

  if block_given?
    prepare_finished_args.call
    nil
  else
    # This API returns eagerly, gotta run it now
    context.dataloader.run_isolated(&prepare_finished_args)
    finished_args
  end
end

#get_argument(argument_name, context = GraphQL::Query::NullContext.instance) ⇒ GraphQL::Schema::Argument?

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns Argument defined on this thing, fetched by name.

Returns:



239
240
241
242
243
244
245
246
247
248
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 239

def get_argument(argument_name, context = GraphQL::Query::NullContext.instance)
  warden = Warden.from_context(context)
  if (arg_config = own_arguments[argument_name]) && (visible_arg = Warden.visible_entry?(:visible_argument?, arg_config, context, warden))
    visible_arg
  elsif defined?(@resolver_class) && @resolver_class
    @resolver_class.get_field_argument(argument_name, context)
  else
    nil
  end
end

#own_arguments ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



442
443
444
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 442

def own_arguments
  @own_arguments || NO_ARGUMENTS
end

#remove_argument(arg_defn) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



96
97
98
99
100
101
102
103
104
105
106
107
108
109
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 96

def remove_argument(arg_defn)
  prev_defn = @own_arguments[arg_defn.name]
  case prev_defn
  when nil
    # done
  when Array
    prev_defn.delete(arg_defn)
  when GraphQL::Schema::Argument
    @own_arguments.delete(arg_defn.name)
  else
    raise "Invariant: unexpected `@own_arguments[#{arg_defn.name.inspect}]`: #{prev_defn.inspect}"
  end
  nil
end

#validate_directive_argument(arg_defn, value) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Usually, this is validated statically by RequiredArgumentsArePresent, but not for directives. TODO apply static validations on schema definitions?



321
322
323
324
 
# File 'lib/graphql/schema/member/has_arguments.rb', line 321

def validate_directive_argument(arg_defn, value)
  # this is only implemented on directives.
  nil
end