Creating connections in Pothos coming from Nexus

[arvi]

Hello. I can't seem to figure out how to convert connection plugin (relay plugin) from Nexus to Pothos based on this setup: https://pothos-graphql.dev/docs/plugins/relay#setup

So in Nexus, you can create multiple relay plugins when creating a schema like so:

export const schema = makeSchema({
	features: {
		abstractTypeStrategies: {
			isTypeOf: true,
		},
		abstractTypeRuntimeChecks: true,
	},
	types: schemaTypes,
	plugins: [
		connectionPlugin({}),
		connectionPlugin({
			nexusFieldName: 'basicConnectionField',
			disableBackwardPagination: true,
			extendConnection: {
				meta: {
					requireResolver: false,
					type: 'SearchMeta',
				},
			},
		}),
		connectionPlugin({
			typePrefix: 'Complex',
			nexusFieldName: 'complexConnectionField',
			extendConnection: {
				cacheID: {
					type: 'String',
				},
				totalCount: { type: 'Int', description: 'The total count of results.' },
				pageCursors: { type: 'PageCursors', description: 'The page cursors for pagination of the results.' },
			},
			additionalArgs: {
				cacheID: nullable(
					stringArg({
						description:
							'Reuse IDs it has saved for filter.',
					})
				),
			},
		}),
	],
	outputs: {
		schema: path.join(__dirname, 'generated', 'schema.graphql'),
		typegen: path.join(__dirname, 'generated', 'nexus.ts'),
	},
	contextType: {
		export: 'ContextType',
		module: 'context-absolute-path-here',
	},
});

and can be used this way:

export const ThingsQuery = queryField(t => {
	t.complexConnectionField('things', {
		type: 'Thing',
		...
	});
});

Is there a guide with regards to Nexus to Pothos conversion or maybe if someone experience moving away from Nexus to Pothos?

Thanks for the help.

[hayes]

I don't know of anything that covers migrations from Nexus in depth like this.

Unfortunately Pothos doesn't have support for multiple instances of a plugin like you are describing, but there is an example here for handling windowed pagination: https://github.com/hayes/pothos/tree/main/examples/relay-windowed-pagination/src

[hayes]

This guide uses this example globally adds the connection fields. What you would want to do instead is add it on individual connections.

Something like

t.connection({
  type: X,
  resolve: (parent, args) => Disconnection(...), 
}, {
    fields: c => complexConnectionFields(c)
})

You could use a pattern similar to https://pothos-graphql.dev/docs/guide/patterns#input-fields to create this helper.

I know this isn't a perfect solution, but hopefully.iy will help unblock you

[arvi]

Nice. Maybe I need to do some experiment using this too https://pothos-graphql.dev/docs/plugins/relay#reusing-connection-objects.

I'll reply to this thread once I found a way to make both nexus and pothos schema with relay identical. 🙂

I appreciate the help and the suggestion/example provided. Thanks Michael.

[hayes]

One thing I think is missing currently is disabling backwards pagination. This should be easy to add, but hasn't been requested before