[英]node-postgres: I can't figure out what's wrong with my query? (ERROR: syntax error at or near “a”)
[英]What is 'cast error' about in Node.js? I can't figure out what's wrong
這是錯誤信息
{ [CastError: Cast to ObjectId failed for value "undefined" at path "_id"]
message: 'Cast to ObjectId failed for value "undefined" at path "_id"',
name: 'CastError',
kind: 'ObjectId',
value: 'undefined',
path: '_id',
reason: undefined }
我正在嘗試使用 Node.js 制作網絡應用程序,但我不知道這是怎么回事。
這是路由器代碼
app.post("/fighter/:id/fight", function(req, res) {
Fight.create(req.body.fight, function(err, createdFight) {
if (err)
console.log(err)
else
res.redirect("/fighter/" + req.body.id);
Fighter.findById(req.params.id, function(err, foundFighter){
if (err)
console.log(err)
else {
foundFighter.fights.push(createdFight);
foundFighter.save();
}
})
})
})
您可能正在使用 MongoDB 並且錯誤消息意味着它無法從您的請求body
創建 ObjectID 。
app.post("/fighter/:id/fight", function(req, res) {
if ( ! req.body.fight ) { return res.json( { error: "fight is empty" } ) };
Fight.create(req.body.fight, function(err, createdFight) { ... } );
} );
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