环回 - "Cannot read property 'connector' of null" 在连接器挂钩中

Question

我试着按照这个例子去做

https://docs.strongloop.com/display/public/LB/Connector+hooks

var connector = MyModel.getDataSource().connector;
  connector.observe('before execute', function(ctx, next) {
  // ...
   next();
});

但是属性 'connector' 似乎未定义。我需要在启动脚本中添加一个连接器挂钩。有什么想法吗？

Answer 1

使用类似这样的方法添加连接器。

In server/datasource.json

{
  "db": {
    "host": "",
    "port": 0,
    "database": "",
    "password": "",
    "name": "db",
    "connector": "memory",
    "user": ""
  },
  "mongodb": {
    "host": "0.0.0.0",
    "port": 27017,
    "database": "drugcorner",
    "password": "12345",
    "name": "mongodb",
    "connector": "mongodb",
    "user": "robins"
  }
}

我们有 MongoDb 个数据源数据源，名称为 mongodb。现在在任何引导文件中为 mongodb 使用连接器。

server/boot/testConnector.js

var mongoConnector = app.dataSources.mongodb.connector;

环回 - "Cannot read property 'connector' of null" 在连接器挂钩中

Loopback - "Cannot read property 'connector' of null" in Connector hooks

node.js

strongloop

loopbackjs