Module: GraphQL::Types::Relay::ConnectionBehaviors::ClassMethods

Defined in:
lib/graphql/types/relay/connection_behaviors.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#edge_class ⇒ Class

Returns:

  • (Class) 


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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 44

def edge_class
  @edge_class
end

#edge_type(edge_type_class, edge_class: GraphQL::Pagination::Connection::Edge, node_type: edge_type_class.node_type, nodes_field: self.has_nodes_field, node_nullable: self.node_nullable, edges_nullable: self.edges_nullable, edge_nullable: self.edge_nullable, field_options: nil) ⇒ Object

Configure this connection to return edges and nodes based on edge_type_class.

This method will use the inputs to create:

  • edges field
  • nodes field
  • description

It's called when you subclass this base connection, trying to use the class name to set defaults. You can call it again in the class definition to override the default (or provide a value, if the default lookup failed).

Parameters:

  • field_options (Hash) (defaults to: nil) —

    Any extra keyword arguments to pass to the field :edges, ... and field :nodes, ... configurations



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 57

def edge_type(edge_type_class, edge_class: GraphQL::Pagination::Connection::Edge, node_type: edge_type_class.node_type, nodes_field: self.has_nodes_field, node_nullable: self.node_nullable, edges_nullable: self.edges_nullable, edge_nullable: self.edge_nullable, field_options: nil)
  # Set this connection's graphql name
  node_type_name = node_type.graphql_name

  @node_type = node_type
  @edge_type = edge_type_class
  @edge_class = edge_class

  base_field_options = {
    name: :edges,
    type: [edge_type_class, null: edge_nullable],
    null: edges_nullable,
    description: "A list of edges.",
    scope: false, # Assume that the connection was already scoped.
    connection: false,
  }

  if field_options
    base_field_options.merge!(field_options)
  end

  field(**base_field_options)

  define_nodes_field(node_nullable, field_options: field_options) if nodes_field

  description("The connection type for #{node_type_name}.")
end

#node_type ⇒ Class

Returns:

  • (Class) 


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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 41

def node_type
  @node_type
end

Instance Method Details

#authorized?(obj, ctx) ⇒ Boolean

Returns:



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 95

def authorized?(obj, ctx)
  true # Let nodes be filtered out
end

#default_relay? ⇒ Boolean

Returns:



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 36

def default_relay?
  true
end

#edge_nullable(new_value = nil) ⇒ Object

Set the default edge_nullable for this class and its child classes. (Defaults to true.) Use edge_nullable(false) in your base class to make non-null edge fields.



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 126

def edge_nullable(new_value = nil)
  if new_value.nil?
    defined?(@edge_nullable) ? @edge_nullable : superclass.edge_nullable
  else
    @edge_nullable = new_value
  end
end

#edges_nullable(new_value = nil) ⇒ Object

Set the default edges_nullable for this class and its child classes. (Defaults to true.) Use edges_nullable(false) in your base class to make non-null edges fields.



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 116

def edges_nullable(new_value = nil)
  if new_value.nil?
    defined?(@edges_nullable) ? @edges_nullable : superclass.edges_nullable
  else
    @edges_nullable = new_value
  end
end

#has_nodes_field(new_value = nil) ⇒ Object

Set the default nodes_field for this class and its child classes. (Defaults to true.) Use nodes_field(false) in your base class to prevent adding of a nodes field.



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 136

def has_nodes_field(new_value = nil)
  if new_value.nil?
    defined?(@nodes_field) ? @nodes_field : superclass.has_nodes_field
  else
    @nodes_field = new_value
  end
end

#inherited(child_class) ⇒ Object 



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 25

def inherited(child_class)
  super
  child_class.has_nodes_field(has_nodes_field)
  child_class.node_nullable(node_nullable)
  child_class.edges_nullable(edges_nullable)
  child_class.edge_nullable(edge_nullable)
  child_class.edge_type = nil
  child_class.node_type = nil
  child_class.edge_class = nil
end

#node_nullable(new_value = nil) ⇒ Object

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 and nodes fields.



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 106

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

#nodes_field(node_nullable: self.node_nullable, field_options: nil) ⇒ Object

Add the shortcut nodes field to this connection and its subclasses



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 91

def nodes_field(node_nullable: self.node_nullable, field_options: nil)
  define_nodes_field(node_nullable, field_options: field_options)
end

#scope_items(items, context) ⇒ Object

Filter this list according to the way its node type would scope them



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 86

def scope_items(items, context)
  node_type.scope_items(items, context)
end

#visible?(ctx) ⇒ Boolean

Returns:



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# File 'lib/graphql/types/relay/connection_behaviors.rb', line 99

def visible?(ctx)
  # if this is an abstract base class, there may be no `node_type`
  node_type ? node_type.visible?(ctx) : super
end