model.remove給modelname.remove（...）EXEC是不是一個函數

Question

我不斷收到此錯誤：

Mongoose: invoice.remove({ _id: 3 }, {}) 
TypeError: invoiceRecord.remove(...).exec is not a function 

我試圖消除.exec但隨後它不會承認我的功能（ERR ，數據）

這裏是我的功能

var deleteInvoice =() => { 
    return new Promise((resolve, reject) => { 
    invoiceRecord.remove(
    ).exec(function (err, data) { 
     if (err) { 
      reject(new Error('deleteInvoice ERROR : ' + err)); 
      return; 
     } 
     if (data.result.n == 0) { 
      reject({code:"INVOICE_NOTFOUND", err:"This invoice could not be found: " + invoiceRecord._id}); 
      return; 
     } 
     resolve(data); 
    }) 
})}; 

我怎樣才能做到這一點，當我invoiceRecord已經刪除所需要的數據？

這工作：

invoiceTable.remove (
    { _id: invoiceRecord._id } 
,function(err, data) { 

這不：

invoiceRecord.remove (
     { _id: invoiceRecord._id } 
    ,function(err, data) { 

我真的不明白爲什麼

Answer 1

正確的語法是記錄here。

由於所有異步貓鼬方法已經返回的承諾，你的代碼可以改寫爲這樣的：

var deleteInvoice =() => { 
    return invoiceRecord.remove().then(data => { 
    if (data.result.n === 0) { 
     // ATTN: it's better to throw Error instances 
     throw { code:"INVOICE_NOTFOUND", err:"This invoice could not be found: " + invoiceRecord._id }; 
    } 
    }, err => { 
    err.message = 'deleteInvoice ERROR : ' + err.message; 
    // Re-throw error 
    throw err; 
    }) 
})};