Class: GraphQLIncludable::Relay::Instrumentation::Connection

Inherits:
Object
  • Object
show all
Defined in:
lib/graphql_includable/relay/instrumentation/connection.rb

Instance Method Summary collapse

Instance Method Details

#instrument(_type, field) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/graphql_includable/relay/instrumentation/connection.rb', line 5

def instrument(_type, field)
  return field unless field.connection?

  required_metadata = [:edges_property, :nodes_property]
  requires_instrumentation = required_metadata.any? { |key| field.metadata.key?(key) }

  return field unless requires_instrumentation
  raise ArgumentError unless required_metadata.all? { |key| field.metadata.key?(key) }

  raise ArgumentError if field.property.present? # TODO: Check for resolve proc too

  edges_prop = field.metadata[:edges_property]
  nodes_prop = field.metadata[:nodes_property]

  _original_resolve = field.resolve_proc
  new_resolve_proc = ->(obj, args, ctx) do
    ConnectionEdgesAndNodes.new(obj, edges_prop, nodes_prop)
  end

  field.redefine { resolve(new_resolve_proc) }
end