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Question

我正在使用sequelize连接到mysql数据库进行开发。我有一个名为Dealer的模型：

'use strict';
module.exports = function(sequelize, DataTypes) {
  var Dealer = sequelize.define('Dealer', {
    id:         { allowNull: false, autoIncrement: true,
                  primaryKey: true, type: DataTypes.INTEGER.UNSIGNED },
    ...
    created_at: { allowNull: false, type: DataTypes.DATE },
    updated_at: { allowNull: false, type: DataTypes.DATE }
  },
  {underscored: true},
  {
    classMethods: {
      associate: function(models) {
        Dealer.hasMany(models.Job);
      }
    },
    instanceMethods: {
      getAllClientData: function(){
        leads = [];
        ...
        return leads;
      },
    }
  });
  return Dealer;
};

当我尝试在dealerController.js文件中的sequelize查询返回的对象上调用实例方法时：

dealer.getAllClientData()

我收到错误：

Unhandled rejection TypeError: dealer.getAllClientData is not a function

当我将返回的JSON打印到控制台时，它会这样读取：

{ dataValues: 
    { id: 1,
      ....
    }
  ...
  '$modelOptions': 
    { timestamps: true,
      instanceMethods: {},
      classMethods: {},
      validate: {},
      freezeTableName: false,
      underscored: true,
      underscoredAll: false,
      paranoid: false,
      rejectOnEmpty: false,
      whereCollection: { id: '1' },
      schema: null,
      schemaDelimiter: '',
      defaultScope: {},
      scopes: [],
      hooks: {},
      indexes: [],
      name: { plural: 'Dealers', singular: 'Dealer' },
      omitNul: false,
      ...
    }
    ...
}

显然我的instanceMethod没有定义，根据sequelize docs，我也应该有getter和setter。

我不明白我在这里缺少什么步骤，因为我已阅读了许多续集文档，甚至使用他们的cli来生成模型和迁移。

有什么想法吗？

编辑：

以下是经销商的日志输出。原型

{ _customGetters: {},
  _customSetters: {},
  validators: {},
  _hasCustomGetters: 0,
  _hasCustomSetters: 0,
  rawAttributes: 
   { id: 
      { allowNull: false,
        autoIncrement: true,
        primaryKey: true,
        type: [Object],
        Model: Dealer,
        fieldName: 'id',
        _modelAttribute: true,
        field: 'id' },
        ///Other Attributes
  },
  _isAttribute: { [Function] cache: MapCache { __data__: [Object] } },
  Model: Dealer,
  $Model': Dealer }

Answer 1

在进一步阅读文档并查看其他一些模型定义后，我发现问题是我错误地定义了我的模型。

在我上面的定义中，您会注意到我将2016-06-13 17:20:16,078 - ERROR - http_protocol - Traceback (most recent call last): File "/opt/anaconda2/lib/python2.7/site-packages/daphne/http_protocol.py", line 108, in process logger.debug("Upgraded connection %s to WebSocket %s", self.reply_channel, protocol.reply_channel) AttributeError: 'WebSocketProtocol' object has no attribute 'reply_channel' Unhandled Error Traceback (most recent call last): File "/opt/anaconda2/lib/python2.7/site-packages/twisted/python/log.py", line 101, in callWithLogger return callWithContext({"system": lp}, func, *args, **kw) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/python/log.py", line 84, in callWithContext return context.call({ILogContext: newCtx}, func, *args, **kw) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/python/context.py", line 118, in callWithContext return self.currentContext().callWithContext(ctx, func, *args, **kw) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/python/context.py", line 81, in callWithContext return func(*args,**kw) --- <exception caught here> --- File "/opt/anaconda2/lib/python2.7/site-packages/twisted/internet/posixbase.py", line 597, in _doReadOrWrite why = selectable.doRead() File "/opt/anaconda2/lib/python2.7/site-packages/twisted/internet/tcp.py", line 209, in doRead return self._dataReceived(data) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/internet/tcp.py", line 215, in _dataReceived rval = self.protocol.dataReceived(data) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/protocols/basic.py", line 571, in dataReceived why = self.lineReceived(line) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/web/http.py", line 1692, in lineReceived self.allContentReceived() File "/opt/anaconda2/lib/python2.7/site-packages/twisted/web/http.py", line 1781, in allContentReceived req.requestReceived(command, path, version) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/web/http.py", line 768, in requestReceived self.process() File "/opt/anaconda2/lib/python2.7/site-packages/daphne/http_protocol.py", line 143, in process self.basic_error(500, b"Internal Server Error", "HTTP processing error") File "/opt/anaconda2/lib/python2.7/site-packages/daphne/http_protocol.py", line 246, in basic_error }).encode("utf8"), File "/opt/anaconda2/lib/python2.7/site-packages/daphne/http_protocol.py", line 206, in serverResponse http.Request.write(self, message['content']) File "/opt/anaconda2/lib/python2.7/site-packages/twisted/web/http.py", line 951, in write self.transport.writeSequence(l) exceptions.AttributeError: 'NoneType' object has no attribute 'writeSequence'选项括在括号中，然后将classMethods和instanceMethods包装在另一组括号中。

这是不正确的。定义续集模型的正确方法是使用两组括号，第一组包含模型属性，第二组包含所有其他选项，包括方法。

RewriteEngine On
DocumentRoot /var/www/html/django-ui
ProxyPass /static/ !
Alias /static/ /var/www/html/django-ui/cyberSA/static/
  <Location "/">
    ProxyPass "ws://localhost:8000/"
  </Location>

Sequelize说没有定义instanceMethod

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1 个答案: