Class: GraphQL::Schema::InputObject

Inherits:
Member
  • Object
show all
Extended by:
Forwardable, 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 EmptyObjects

EmptyObjects::EMPTY_ARRAY, EmptyObjects::EMPTY_HASH

Constants included from Member::GraphQLTypeNames

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

Instance Attribute Summary collapse

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

#ast_node

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Member::HasArguments

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

Methods included from Member::HasArguments::ArgumentObjectLoader

authorize_application_object, load_and_authorize_application_object, 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::BaseDSLMethods

#authorized?, #default_relay, #description, #introspection, #introspection?, #mutation, #name, #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::HasPath

#path

Methods included from Member::HasAstNode

#inherited

Methods included from Member::HasDirectives

add_directive, #directive, #directives, get_directives, #inherited, #remove_directive, remove_directive

Constructor Details

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

Returns a new instance of InputObject.



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# File 'lib/graphql/schema/input_object.rb', line 21

def initialize(arguments, ruby_kwargs:, context:, defaults_used:)
  @context = context
  @ruby_style_hash = ruby_kwargs
  @arguments = arguments
  # Apply prepares, not great to have it duplicated here.
  self.class.arguments(context).each_value do |arg_defn|
    ruby_kwargs_key = arg_defn.keyword
    if @ruby_style_hash.key?(ruby_kwargs_key)
      # 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?
        prepared_value = arg_defn.prepare_value(self, @ruby_style_hash[ruby_kwargs_key])
        overwrite_argument(ruby_kwargs_key, prepared_value)
      end
    end
  end
end

Instance Attribute Details

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

Returns The underlying arguments instance.

Returns:

  • (GraphQL::Execution::Interpereter::Arguments) —

    The underlying arguments instance



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

def arguments
  @arguments
end

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

Returns The context for this query.

Returns:



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# File 'lib/graphql/schema/input_object.rb', line 14

def context
  @context
end

Class Method Details

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



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# File 'lib/graphql/schema/input_object.rb', line 123

def argument(*args, **kwargs, &block)
  argument_defn = super(*args, **kwargs, &block)
  if one_of?
    if argument_defn.type.non_null?
      raise ArgumentError, "Argument '#{argument_defn.path}' must be nullable because it is part of a OneOf type, add `required: false`."
    end
    if argument_defn.default_value?
      raise ArgumentError, "Argument '#{argument_defn.path}' cannot have a default value because it is part of a OneOf type, remove `default_value: ...`."
    end
  end
  # Add a method access
  method_name = argument_defn.keyword
  class_eval <<-RUBY, __FILE__, __LINE__
    def #{method_name}
      self[#{method_name.inspect}]
    end
  RUBY
  argument_defn
end

.authorized?(obj, value, ctx) ⇒ Boolean

Returns:



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# File 'lib/graphql/schema/input_object.rb', line 58

def self.authorized?(obj, value, ctx)
  # Authorize each argument (but this doesn't apply if `prepare` is implemented):
  if value.respond_to?(:key?)
    arguments(ctx).each do |_name, input_obj_arg|
      if value.key?(input_obj_arg.keyword) &&
        !input_obj_arg.authorized?(obj, value[input_obj_arg.keyword], ctx)
        return false
      end
    end
  end
  # It didn't early-return false:
  true
end

.coerce_input(value, ctx) ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 207

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

  arguments = coerce_arguments(nil, value, ctx)

  ctx.query.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.



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# File 'lib/graphql/schema/input_object.rb', line 226

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(ctx).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 



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# File 'lib/graphql/schema/input_object.rb', line 143

def kind
  GraphQL::TypeKinds::INPUT_OBJECT
end

.one_of ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 72

def self.one_of
  if !one_of?
    if all_argument_definitions.any? { |arg| arg.type.non_null? }
      raise ArgumentError, "`one_of` may not be used with required arguments -- add `required: false` to argument definitions to use `one_of`"
    end
    directive(GraphQL::Schema::Directive::OneOf)
  end
end

.one_of? ⇒ Boolean

Returns:



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# File 'lib/graphql/schema/input_object.rb', line 81

def self.one_of?
  directives.any? { |d| d.is_a?(GraphQL::Schema::Directive::OneOf) }
end

.validate_non_null_input(input, ctx, max_errors: nil) ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 150

def validate_non_null_input(input, ctx, max_errors: nil)
  warden = ctx.warden

  if input.is_a?(Array)
    return GraphQL::Query::InputValidationResult.from_problem(INVALID_OBJECT_MESSAGE % { object: JSON.generate(input, quirks_mode: true) })
  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:
    return GraphQL::Query::InputValidationResult.from_problem(INVALID_OBJECT_MESSAGE % { object: JSON.generate(input, quirks_mode: true) })
  end

  # Inject missing required arguments
  missing_required_inputs = self.arguments(ctx).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

  result = nil
  [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
      if argument.nil?
        result ||= Query::InputValidationResult.new
        result.add_problem("Field is not defined on #{self.graphql_name}", [argument_name])
      else
        # Items in the input that are expected, but have invalid values
        argument_result = argument.type.validate_input(value, ctx)
        result ||= Query::InputValidationResult.new
        if !argument_result.valid?
          result.merge_result!(argument_name, argument_result)
        end
      end
    end
  end

  if one_of?
    if input.size == 1
      input.each do |name, value|
        if value.nil?
          result ||= Query::InputValidationResult.new
          result.add_problem("'#{graphql_name}' requires exactly one argument, but '#{name}' was `null`.")
        end
      end
    else
      result ||= Query::InputValidationResult.new
      result.add_problem("'#{graphql_name}' requires exactly one argument, but #{input.size} were provided.")
    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) 


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# File 'lib/graphql/schema/input_object.rb', line 103

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

#key?(key) ⇒ Boolean

Returns:



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# File 'lib/graphql/schema/input_object.rb', line 113

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

#prepare ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 47

def prepare
  if @context
    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
  else
    self
  end
end

#to_h ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 39

def to_h
  unwrap_value(@ruby_style_hash)
end

#to_hash ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 43

def to_hash
  to_h
end

#to_kwargs ⇒ Object

A copy of the Ruby-style hash



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# File 'lib/graphql/schema/input_object.rb', line 118

def to_kwargs
  @ruby_style_hash.dup
end

#unwrap_value(value) ⇒ Object 



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# File 'lib/graphql/schema/input_object.rb', line 85

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