INNER CODE UNIT · TypeScript

ExplicitLoaderImpl

slaypni/type-graphql-dataloader · src/decorators/typeorm/ExplicitLoaderImpl.ts:13

export function ExplicitLoaderImpl<V>(
  keyFunc: KeyFunc,
  option?: TypeormLoaderOption
): PropertyDecorator {
  return (target: Object, propertyKey: string | symbol) => {
    UseMiddleware(async ({ root, context }, next) => {
      const tgdContext = context._tgdContext as TgdContext;
      if (tgdContext.typeormGetConnection == null) {
        throw Error("typeormGetConnection is not set");
      }
      const relation = tgdContext
        .typeormGetConnection()
        .getMetadata(target.constructor)
        .findRelationWithPropertyPath(propertyKey.toString());

      if (relation == null) {
        return await next();
      }

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