class GraphQL::InvalidNullError

for a non-null field.
Raised automatically when a field’s resolve function returns ‘nil`

def initialize(parent_type, field, value) 

def initialize(parent_type, field, value)
  @parent_type = parent_type
  @field = field
  @value = value
  super("Cannot return null for non-nullable field #{@parent_type.name}.#{@field.name}")
end

def parent_error?

Deprecated:
  • always false
def parent_error?
  false
end

def to_h

Returns:
  • (Hash) - An entry for the response's "errors" key 
def to_h
  { "message" => message }
end