Class: Graphql::Generators::RelayGenerator
- Inherits:
-
Rails::Generators::Base
- Object
- Rails::Generators::Base
- Graphql::Generators::RelayGenerator
- Includes:
- Core
- Defined in:
- lib/generators/graphql/relay_generator.rb
Instance Method Summary collapse
Methods included from Core
#create_dir, #create_mutation_root_type, #insert_root_type, #module_namespacing_when_supported, #schema_file_path
Instance Method Details
#install_relay ⇒ Object
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# File 'lib/generators/graphql/relay_generator.rb', line 13 def install_relay # Add Node, `node(id:)`, and `nodes(ids:)` template("node_type.erb", "#{[:directory]}/types/node_type.rb") in_root do fields = " # Add `node(id: ID!) and `nodes(ids: [ID!]!)`\n include GraphQL::Types::Relay::HasNodeField\n include GraphQL::Types::Relay::HasNodesField\n\n" inject_into_file "#{[:directory]}/types/query_type.rb", fields, after: /class .*QueryType\s*<\s*[^\s]+?\n/m, force: false end # Add connections and edges template("base_connection.erb", "#{[:directory]}/types/base_connection.rb") template("base_edge.erb", "#{[:directory]}/types/base_edge.rb") connectionable_type_files = { "#{[:directory]}/types/base_object.rb" => /class .*BaseObject\s*<\s*[^\s]+?\n/m, "#{[:directory]}/types/base_union.rb" => /class .*BaseUnion\s*<\s*[^\s]+?\n/m, "#{[:directory]}/types/base_interface.rb" => /include GraphQL::Schema::Interface\n/m, } in_root do connectionable_type_files.each do |type_class_file, sentinel| inject_into_file type_class_file, " connection_type_class(Types::BaseConnection)\n", after: sentinel, force: false inject_into_file type_class_file, " edge_type_class(Types::BaseEdge)\n", after: sentinel, force: false end end # Add object ID hooks & connection plugin schema_code = <<-RUBY # Relay-style Object Identification: # Return a string UUID for `object` def self.id_from_object(object, type_definition, query_ctx) # Here's a simple implementation which: # - joins the type name & object.id # - encodes it with base64: # GraphQL::Schema::UniqueWithinType.encode(type_definition.name, object.id) end # Given a string UUID, find the object def self.object_from_id(id, query_ctx) # For example, to decode the UUIDs generated above: # type_name, item_id = GraphQL::Schema::UniqueWithinType.decode(id) # # Then, based on `type_name` and `id` # find an object in your application # ... end RUBY inject_into_file schema_file_path, schema_code, before: /^end\n/m, force: false end |