序列化 JSON 数据类型

2022-01-19 00:00:00 json node.js mysql sequelize.js

我已将模型定义为 

module.exports = function (sequelize, DataTypes) {
  const MyModel = sequelize.define('MyModel', {
    data: {
      type: DataTypes.JSON,
      ...
    },
    ...
  });

  return MyModel;
};

我使用查询它

MyModel.findAll().then(myModels => ...);

但是，查询结果中的 data 字段是一个字符串，而不是 JSON 对象.我该如何解决?

However, data field in the query result is a string, not a JSON object. How do I fix it?

推荐答案

还不支持 MySQL JSON数据类型#4727.但你可以这样做:

It's not supported yet MySQL JSON Data Type #4727. But you can do something like this:

 module.exports = function (sequelize, DataTypes) {
      const MyModel = sequelize.define('MyModel', {
        data: {
          type: Sequelize.TEXT,
           get: function () {
                return JSON.parse(this.getDataValue('value'));
            },
            set: function (value) {
                this.setDataValue('value', JSON.stringify(value));
            },
    ,
          ...
        },
        ...
      });

      return MyModel;
};

我也在github上找到了这个包sequelize-json如果你可以试试不想使用 getter 和 setter.

I also found this package on github sequelize-json you can give it a try if you don't want to use getters and setters.

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