sails.js 查询表列内的 json 对象

Question

所以这一定是一个奇怪的问题，我想让sails.js ORM 搜索类似以下的内容

如果这是以下查询的结果

Venue.findOne({id: 125274827508536}).exec()

返回 >

{
   "id": "125274827508536",
   "attire": "Casual",
   "can_post": false,
   "category": "Restaurant/cafe",
   "category_list": [
      {
         "id": "200742186618963",
         "name": "Vegetarian & Vegan Restaurant"
      },
      {
         "id": "192108214153222",
         "name": "Breakfast & Brunch Restaurant"
      },
      {
         "id": "188296324525457",
         "name": "Sandwich Shop"
      }
   ],
   "checkins": 562,
   "cover": {
      "cover_id": 356427064393310,
      "offset_x": 0,
      "offset_y": 13,
      "source": "https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xaf1/t31.0-8/s720x720/460144_356427064393310_1179113344_o.jpg",
      "id": "356427064393310"
   },
   "culinary_team": "Ramy Abu-Yousef : Owner, Chef\nDallas Jones: Chef",
   "description": "Unique Sandwiches\nDelicious Salads\nHomemade Soups (4 daily)\nFresh Fruit Smoothies\nMilkshakes\nMOUSTACHE WALL OF FAME",
   "general_manager": "Ramy Abu-Yousef & Syndey Friedemann",
   "has_added_app": false,
   "hours": {
      "mon_1_open": "08:00",
      "mon_1_close": "22:00",
      "tue_1_open": "08:00",
      "tue_1_close": "22:00",
      "wed_1_open": "08:00",
      "wed_1_close": "22:00",
      "thu_1_open": "08:00",
      "thu_1_close": "22:00",
      "fri_1_open": "08:00",
      "fri_1_close": "22:00",
      "sat_1_open": "08:00",
      "sat_1_close": "22:00",
      "sun_1_open": "08:00",
      "sun_1_close": "22:00"
   },
   "is_community_page": false,
   "is_published": true,
   "likes": 540,
   "link": "https://www.facebook.com/JohnnyBarrs",
   "location": {
      "city": "Queenstown",
      "country": "New Zealand",
      "latitude": -45.032691433795,
      "longitude": 168.66154298959,
      "street": "15 Church Street",
      "zip": "9300"
   },
   "name": "Johnny Barr's",
   "parking": {
      "lot": 1,
      "street": 1,
      "valet": 0
   },
   "payment_options": {
      "amex": 1,
      "cash_only": 0,
      "discover": 0,
      "mastercard": 1,
      "visa": 1
   },
   "phone": "+64 (0)3 409 0169",
   "price_range": "$$ (10-30)",
   "restaurant_services": {
      "delivery": 1,
      "catering": 0,
      "groups": 1,
      "kids": 1,
      "outdoor": 0,
      "reserve": 0,
      "takeout": 1,
      "waiter": 0,
      "walkins": 1
   },
   "restaurant_specialties": {
      "breakfast": 1,
      "coffee": 1,
      "dinner": 1,
      "drinks": 1,
      "lunch": 1
   },
   "talking_about_count": 2,
   "username": "JohnnyBarrs",
   "website": "www.johnnybarrs.com",
   "were_here_count": 562
}

现在我需要帆做的是以下

Venue.findOne({'restaurant_services': {'delivery': 1}).exec()

要返回与我上面显示的相同的对象，

有什么想法吗？

Answer 1

如果您的适配器是 mongo，那么您可以开箱即用

Venue.findOne({'restaurant_services.delivery': 1}).exec()

因此，如果您可以将数据转换为其他来源来执行此查询，则应考虑您的选择。

如果不是，并且您的适配器是基于 SQL 的，那么它会更加困难，并且需要有关您的用例的更多信息来决定最有效的选项。

例如，如果您可以将查询限制在 SQL 数据库中的几个索引字段，那么您可以使用 lodash 在您的记录中查找您的记录。

Venue.find({/*limiting criteria to bring down the number of results*/}).exec(function(err,results){/* JSON.parse(results) then use lodash to find the final result*/})

另一种选择是

Venue.find({restaurant_services: {contains: 'delivery: 1'}}).exec()

这是一个开箱即用的想法，但可能会奏效。

再次很大程度上取决于您的设置、它的索引方式以及需要找到多少个场所。