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Contents
# frozen_string_literal: true
module GraphQL
module Types
module Relay
module EdgeBehaviors
def self.included(child_class)
child_class.description("An edge in a connection.")
child_class.field(:cursor, String, null: false, description: "A cursor for use in pagination.")
child_class.extend(ClassMethods)
child_class.node_nullable(true)
end
module ClassMethods
# Get or set the Object type that this edge wraps.
#
# @param node_type [Class] A `Schema::Object` subclass
# @param null [Boolean]
def node_type(node_type = nil, null: self.node_nullable)
if node_type
@node_type = node_type
# Add a default `node` field
field :node, node_type, null: null, description: "The item at the end of the edge.", connection: false
end
@node_type
end
def authorized?(obj, ctx)
true
end
def accessible?(ctx)
node_type.accessible?(ctx)
end
def visible?(ctx)
node_type.visible?(ctx)
end
# Set the default `node_nullable` for this class and its child classes. (Defaults to `true`.)
# Use `node_nullable(false)` in your base class to make non-null `node` field.
def node_nullable(new_value = nil)
if new_value.nil?
defined?(@node_nullable) ? @node_nullable : superclass.node_nullable
else
@node_nullable = new_value
end
end
end
end
end
end
end
Version data entries
20 entries across 20 versions & 2 rubygems