数据模型内置了查询处理器， 这些处理器可用于服务接口(API)和数据流(Flow)数据查询功能。

{
  "name": "书籍分类",
  "table": {
    "name": "category",
    "comment": "书籍分类"
  },
  "columns": [
    {
      "label": "ID",
      "name": "id",
      "type": "ID",
      "comment": "ID",
      "primary": true
    },
    {
      "label": "父级id",
      "name": "parent_id",
      "type": "integer",
      "nullable": true
    },
    {
      "label": "分类名称",
      "name": "name",
      "type": "string",
      "length": 128,
      "index": true
    }
  ],
  "relations": {
    "book": {
      "type": "hasMany",
      "model": "book",
      "key": "category_id",
      "foreign": "id",
      "query": {}
    },
    "parent": {
      "type": "hasOne",
      "model": "category",
      "key": "id",
      "foreign": "parent_id",
      "query": {}
    }
  },
  "option": {
    "timestamps": true,
    "soft_deletes": true
  },
  "values": [
    {
      "id": 1,
      "parent_id": null,
      "name": "文史类"
    },
    {
      "id": 2,
      "parent_id": 1,
      "name": "历史"
    },
    {
      "id": 3,
      "parent_id": 1,
      "name": "古诗"
    },
    {
      "id": 4,
      "parent_id": null,
      "name": "理工类"
    },
    {
      "id": 5,
      "parent_id": 4,
      "name": "数学"
    },
    {
      "id": 6,
      "parent_id": 4,
      "name": "物理"
    }
  ]
}

function Find() {
  return Process("models.category.find", 1, {});
}

function Get() {
  return Process("models.category.get", {
    wheres: [{ column: "parent_id", value: null }],
  });
}

执行 yao run scripts.test.Find和yao run scripts.test.Get