Dart 渡槽框架按文档获取查询where

我想做http请求

例如，如何创建一个渡槽查询来获取jsonb列有值的行

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我只想获取location是斋浦尔的位置

query.predicate=QueryPredicate（“content->'location'=@loc'，{loc:location}）

@Operation.get()
  Future<Response> getAllCoworking({@Bind.query('l') String location}) async {
    final query = Query<Coworking>(context);
    /*if (location != null) {
      query.where((x) => x.title).contains(
            location,
            caseSensitive: false,
          );
    }*/
    query
      ..sortBy((w) => w.title, QuerySortOrder.ascending)
      ..fetchLimit = 5;
    final coworkingList = await query.fetch();
    return Response.ok(coworkingList);
  }

[
    {
        "id": 1,
        "title": "House of Words",
        "content": {
            "location": "Jaipur"
        }
    },
    {
        "id": 2,
        "title": "T-START UDAIPUR",
        "content": {
            "location": "Udaipur"
        }
    },
    {
        "id": 3,
        "title": "Thalagiri Co-Working Space",
        "content": {
            "location": "Udaipur"
        }
    }
]