javascript - 路由包含在不同文件中时未定义猫鼬模式
问题描述
为了清理我的代码,我决定将我所有的模式和路由放到我目录中的不同文件中,并在我的 app.js 中要求它们。每个 Schema 对应于每个路由。除了我的一条路线之外,我已经让它工作了,但对于一个特定的路线,我不知道为什么我把它当作未定义的。
这是我在 app.js (主文件)中的代码
// Schemas
const Transaction = require ("./models/transaction");
User = require ("./models/user");
Ticket = require ("./models/ticket");
Job = require ("./models/job");
Client = require ("./models/client");
// Routes
require("./routes/users")(app);
require("./routes/tickets")(app);
require("./routes/clients")(app);
require("./routes/jobs")(app);
require("./routes/transactions")(app);
所有这些工作,除了我的交易路线。这是它的架构:
// =======================Transaction Schema "./models/transaction"
var transactionSchema = new mongoose.Schema({
job: String,
client: String,
deposited_by_user: String,
transaction_info:{
amount: mongoose.Decimal128,
method: String,
receipt_number: String,
date: {type: Date}
},
billing_address: {
street: String,
city: String,
state: String,
zip: String
},
notes: String,
date_added: {type: Date, default: Date.now}
});
module.exports = mongoose.model("Transaction", transactionSchema);
及其路线:
module.exports = function(app) {
// =======================Transaction "./routes/transactions"
// index
app.get("/transactions", function(req, res){
Transaction.find({}, function(err, transactions){ // It is at this line where it is telling me that "Transaction" is undefined. However, with this code pasted into the app.js exactly the same as it is here, it works fine.
if(err){
console.log("error")
} else {
for (let i = 0; i < transactions.length; i++){
transactions[i]["transaction_info"]["new_amount"] = numberWithCommas(transactions[i]["transaction_info"]["amount"]);
}
res.render("transactions", {transactions: transactions});
}
});
});
// new
app.get("/transactions/add", async function(req, res){
let endCollections = [];
for (let i = 0; i < collections.length; i++){
await collections[i].find({}, function(err, foundCollection){
if (err) {
console.log(err);
} else {
endCollections[i] = foundCollection;
}
});
}
res.render("add_transaction", {users: endCollections[0], clients: endCollections[2], jobs: endCollections[3]});
});
// show
app.get("/transactions/:id", function(req, res){
Transaction.findById(req.params.id, function(err, foundTransaction){
if (err){
console.log(err);
} else {
// Redirect
let price = numberWithCommas(foundTransaction["transaction_info"]["amount"]);
res.render("transaction", {transaction: foundTransaction, price: price});
}
});
});
// edit
app.get("/transactions/:id/edit", function(req, res){
Transaction.findById(req.params.id, async function(err, foundTransaction){
if (err){
console.log("error")
} else {
let endCollections = [];
for (let i = 0; i < collections.length; i++){
await collections[i].find({}, function(err, foundCollection){
if (err) {
console.log(err);
} else {
endCollections[i] = foundCollection;
}
});
}
let deposit_date = foundTransaction["transaction_info"]["date"];
deposit_date = moment(deposit_date).format("MM-DD-YYYY");
res.render("edit_transaction", {transaction: foundTransaction, users: endCollections[0], clients: endCollections[2], jobs: endCollections[3], deposit_date: deposit_date});
}
});
});
// create
app.post("/transactions", function(req, res){
// Create Transaction
Transaction.create(req.body.transaction, function(err, newTransaction){
if (err){
console.log(err)
} else {
// Redirect
res.redirect("/transactions");
}
});
});
// update
app.put("/transactions/:id", function(req, res){
// Update transaction
Transaction.findByIdAndUpdate(req.params.id, req.body.transaction, function(err, updatedTransaction){
if (err){
console.log(err)
} else {
// Redirect
res.redirect("/transactions/" + req.params.id);
}
});
});
// delete
app.delete("/transactions/:id", function(req, res){
// Delete job
Job.findByIdAndRemove(req.params.id, function(err, deletedTransaction){
if (err){
console.log(err)
} else {
// Redirect
res.redirect("/transactions");
}
});
});
}
我不相信架构是问题,因为当我将事务路由代码直接粘贴到我的 app.js 文件中时,一个字符一个字符,它工作正常。但是,随着它的拆分(并且代码在 transactions.js 文件中保持完全相同),当我在以 Transaction.find 开头的代码部分加载“事务未定义”的页面时出现错误
总的来说,我不明白为什么当路由在 app.js 文件中时,它工作得很好,但是当它在一个单独的文件中时,Transaction 变量被认为是未定义的;尽管它的建模与我的其他路线和模式完全相同,但仍然如此。这里有什么我没有看到的吗?谢谢。
解决方案
1) 代替:
app.get("/transactions", function(req, res){
.
.
app.get("/transactions/:id", function(req, res){
也许只是:
app.get("/", function(req, res){
.
.
app.get("/:id", function(req, res){
等等?
2)
Transaction.find({}, function(err, transactions){
而不是 {} 尝试 ()
Transaction.find((), function(err, transactions){
看起来你正在传递一个空对象
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