Class: GraphQL::Schema::InputObject

Inherits:
Member
  • Object
show all
Extended by:
Forwardable, Member::AcceptsDefinition, Member::HasArguments, Member::HasArguments::ArgumentObjectLoader, Member::HasValidators, Member::ValidatesInput
Includes:
Dig
Defined in:
lib/graphql/schema/input_object.rb

Constant Summary collapse

INVALID_OBJECT_MESSAGE =

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. 

"Expected %{object} to be a key-value object responding to `to_h` or `to_unsafe_h`."

Constants included from Member::HasArguments

Member::HasArguments::NO_ARGUMENTS

Constants included from FindInheritedValue::EmptyObjects

FindInheritedValue::EmptyObjects::EMPTY_ARRAY, FindInheritedValue::EmptyObjects::EMPTY_HASH

Constants included from Member::HasDirectives

Member::HasDirectives::NO_DIRECTIVES

Constants included from Member::GraphQLTypeNames

Member::GraphQLTypeNames::Boolean, Member::GraphQLTypeNames::ID, Member::GraphQLTypeNames::Int

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Member::HasArguments

add_argument, argument, argument_class, arguments_statically_coercible?, coerce_arguments, get_argument, own_arguments, validate_directive_argument

Methods included from Member::HasArguments::ArgumentObjectLoader

load_application_object, load_application_object_failed, object_from_id

Methods included from Member::ValidatesInput

coerce_isolated_input, coerce_isolated_result, valid_input?, valid_isolated_input?, validate_input

Methods included from Member::HasValidators

validates, validators

Methods included from Dig

#dig

Methods included from Member::CachedGraphQLDefinition

#graphql_definition, #initialize_copy, #type_class

Methods included from Relay::TypeExtensions

#connection_type, #define_connection, #define_edge, #edge_type

Methods included from Member::BaseDSLMethods

#accessible?, #authorized?, #default_graphql_name, #description, #graphql_name, #introspection, #introspection?, #mutation, #name, #overridden_graphql_name, #to_graphql, #visible?

Methods included from Member::BaseDSLMethods::ConfigurationExtension

#inherited

Methods included from Member::TypeSystemHelpers

#kind, #list?, #non_null?, #to_list_type, #to_non_null_type, #to_type_signature

Methods included from Member::Scoped

#scope_items

Methods included from Member::RelayShortcuts

#connection_type, #connection_type_class, #edge_type, #edge_type_class

Methods included from Member::HasPath

#path

Methods included from Member::HasAstNode

#ast_node

Methods included from Member::HasDirectives

#directive, #directives, #remove_directive

Constructor Details

#initialize(arguments = nil, ruby_kwargs: nil, context:, defaults_used:) ⇒ InputObject

Returns a new instance of InputObject.



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
 
# File 'lib/graphql/schema/input_object.rb', line 22

def initialize(arguments = nil, ruby_kwargs: nil, context:, defaults_used:)
  @context = context
  if ruby_kwargs
    @ruby_style_hash = ruby_kwargs
    @arguments = arguments
  else
    @arguments = self.class.arguments_class.new(arguments, context: context, defaults_used: defaults_used)
    # Symbolized, underscored hash:
    @ruby_style_hash = @arguments.to_kwargs
  end
  # Apply prepares, not great to have it duplicated here.
  maybe_lazies = []
  self.class.arguments.each_value do |arg_defn|
    ruby_kwargs_key = arg_defn.keyword

    if @ruby_style_hash.key?(ruby_kwargs_key)
      loads = arg_defn.loads
      # Resolvers do this loading themselves;
      # With the interpreter, it's done during `coerce_arguments`
      if loads && !arg_defn.from_resolver? && !context.interpreter?
        value = @ruby_style_hash[ruby_kwargs_key]
        loaded_value = if arg_defn.type.list?
          value.map { |val| load_application_object(arg_defn, loads, val, context) }
        else
          load_application_object(arg_defn, loads, value, context)
        end
        maybe_lazies << context.schema.after_lazy(loaded_value) do |loaded_value|
          overwrite_argument(ruby_kwargs_key, loaded_value)
        end
      end

      # Weirdly, procs are applied during coercion, but not methods.
      # Probably because these methods require a `self`.
      if arg_defn.prepare.is_a?(Symbol) || context.nil? || !context.interpreter?
        prepared_value = arg_defn.prepare_value(self, @ruby_style_hash[ruby_kwargs_key])
        overwrite_argument(ruby_kwargs_key, prepared_value)
      end
    end
  end

  @maybe_lazies = maybe_lazies
end

Class Attribute Details

.arguments_class ⇒ Class<GraphQL::Arguments>

Returns:

  • (Class<GraphQL::Arguments>) 


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

def arguments_class
  @arguments_class
end

Instance Attribute Details

#arguments ⇒ GraphQL::Query::Arguments, GraphQL::Execution::Interpereter::Arguments (readonly)

Returns The underlying arguments instance.

Returns:



17
18
19
 
# File 'lib/graphql/schema/input_object.rb', line 17

def arguments
  @arguments
end

#context ⇒ GraphQL::Query::Context (readonly)

Returns The context for this query.

Returns:



15
16
17
 
# File 'lib/graphql/schema/input_object.rb', line 15

def context
  @context
end

Class Method Details

.argument(*args, **kwargs, &block) ⇒ Object 



127
128
129
130
131
132
133
134
135
136
 
# File 'lib/graphql/schema/input_object.rb', line 127

def argument(*args, **kwargs, &block)
  argument_defn = super(*args, **kwargs, &block)
  # Add a method access
  method_name = argument_defn.keyword
  class_eval <<-RUBY, __FILE__, __LINE__
    def #{method_name}
      self[#{method_name.inspect}]
    end
  RUBY
end

.coerce_input(value, ctx) ⇒ Object 



205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
 
# File 'lib/graphql/schema/input_object.rb', line 205

def coerce_input(value, ctx)
  if value.nil?
    return nil
  end

  arguments = coerce_arguments(nil, value, ctx)

  ctx.schema.after_lazy(arguments) do |resolved_arguments|
    if resolved_arguments.is_a?(GraphQL::Error)
      raise resolved_arguments
    else
      input_obj_instance = self.new(resolved_arguments, ruby_kwargs: resolved_arguments.keyword_arguments, context: ctx, defaults_used: nil)
      input_obj_instance.prepare
    end
  end
end

.coerce_result(value, ctx) ⇒ Object

It’s funny to think of a result of an input object. This is used for rendering the default value in introspection responses.



224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
 
# File 'lib/graphql/schema/input_object.rb', line 224

def coerce_result(value, ctx)
  # Allow the application to provide values as :snake_symbols, and convert them to the camelStrings
  value = value.reduce({}) { |memo, (k, v)| memo[Member::BuildType.camelize(k.to_s)] = v; memo }

  result = {}

  arguments.each do |input_key, input_field_defn|
    input_value = value[input_key]
    if value.key?(input_key)
      result[input_key] = if input_value.nil?
        nil
      else
        input_field_defn.type.coerce_result(input_value, ctx)
      end
    end
  end

  result
end

.kind ⇒ Object 



155
156
157
 
# File 'lib/graphql/schema/input_object.rb', line 155

def kind
  GraphQL::TypeKinds::INPUT_OBJECT
end

.to_graphql ⇒ Object 



138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# File 'lib/graphql/schema/input_object.rb', line 138

def to_graphql
  type_defn = GraphQL::InputObjectType.new
  type_defn.name = graphql_name
  type_defn.description = description
  type_defn.metadata[:type_class] = self
  type_defn.mutation = mutation
  type_defn.ast_node = ast_node
  arguments.each do |name, arg|
    type_defn.arguments[arg.graphql_definition.name] = arg.graphql_definition
  end
  # Make a reference to a classic-style Arguments class
  self.arguments_class = GraphQL::Query::Arguments.construct_arguments_class(type_defn)
  # But use this InputObject class at runtime
  type_defn.arguments_class = self
  type_defn
end

.validate_non_null_input(input, ctx) ⇒ Object 



162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
 
# File 'lib/graphql/schema/input_object.rb', line 162

def validate_non_null_input(input, ctx)
  result = GraphQL::Query::InputValidationResult.new

  warden = ctx.warden

  if input.is_a?(Array)
    result.add_problem(INVALID_OBJECT_MESSAGE % { object: JSON.generate(input, quirks_mode: true) })
    return result
  end

  if !(input.respond_to?(:to_h) || input.respond_to?(:to_unsafe_h))
    # We're not sure it'll act like a hash, so reject it:
    result.add_problem(INVALID_OBJECT_MESSAGE % { object: JSON.generate(input, quirks_mode: true) })
    return result
  end

  # Inject missing required arguments
  missing_required_inputs = self.arguments.reduce({}) do |m, (argument_name, argument)|
    if !input.key?(argument_name) && argument.type.non_null? && warden.get_argument(self, argument_name)
      m[argument_name] = nil
    end

    m
  end


  [input, missing_required_inputs].each do |args_to_validate|
    args_to_validate.each do |argument_name, value|
      argument = warden.get_argument(self, argument_name)
      # Items in the input that are unexpected
      unless argument
        result.add_problem("Field is not defined on #{self.graphql_name}", [argument_name])
        next
      end
      # Items in the input that are expected, but have invalid values
      argument_result = argument.type.validate_input(value, ctx)
      result.merge_result!(argument_name, argument_result) unless argument_result.valid?
    end
  end

  result
end

Instance Method Details

#[](key) ⇒ Object

Lookup a key on this object, it accepts new-style underscored symbols Or old-style camelized identifiers.

Parameters:

  • key (Symbol, String) 


104
105
106
107
108
109
110
111
112
 
# File 'lib/graphql/schema/input_object.rb', line 104

def [](key)
  if @ruby_style_hash.key?(key)
    @ruby_style_hash[key]
  elsif @arguments
    @arguments[key]
  else
    nil
  end
end

#key?(key) ⇒ Boolean

Returns:



114
115
116
 
# File 'lib/graphql/schema/input_object.rb', line 114

def key?(key)
  @ruby_style_hash.key?(key) || (@arguments && @arguments.key?(key)) || false
end

#prepare ⇒ Object 



73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'lib/graphql/schema/input_object.rb', line 73

def prepare
  if context
    context.schema.after_any_lazies(@maybe_lazies) do
      object = context[:current_object]
      # Pass this object's class with `as` so that messages are rendered correctly from inherited validators
      Schema::Validator.validate!(self.class.validators, object, context, @ruby_style_hash, as: self.class)
      self
    end
  else
    self
  end
end

#to_h ⇒ Object 



65
66
67
 
# File 'lib/graphql/schema/input_object.rb', line 65

def to_h
  unwrap_value(@ruby_style_hash)
end

#to_hash ⇒ Object 



69
70
71
 
# File 'lib/graphql/schema/input_object.rb', line 69

def to_hash
  to_h
end

#to_kwargs ⇒ Object

A copy of the Ruby-style hash



119
120
121
 
# File 'lib/graphql/schema/input_object.rb', line 119

def to_kwargs
  @ruby_style_hash.dup
end

#unwrap_value(value) ⇒ Object 



86
87
88
89
90
91
92
93
94
95
96
97
98
99
 
# File 'lib/graphql/schema/input_object.rb', line 86

def unwrap_value(value)
  case value
  when Array
    value.map { |item| unwrap_value(item) }
  when Hash
    value.reduce({}) do |h, (key, value)|
      h.merge!(key => unwrap_value(value))
    end
  when InputObject
    value.to_h
  else
    value
  end
end