所以，我有这样的代码。我想永远调试进去。我不知道为什么它返回错误。我可能有承诺的一些元素我忘了或我有我的Array.push“事业不对劲时，我看日志，它抛出就行，我推一些对象到数组错误。
这是我到目前为止的代码：
router.post('/inventory/product/stocks/add/(:id)', authenticationMiddleware(), function(req, res, next) {
const db = require('../db.js')
var product_no = req.params.id
var cog = req.body.cog
var size_slug = req.body.size_slug
var size_name = req.body.size_name
var rowinserted = 0
var initial_stock = req.body.initial_stock
var stock_id = new Array
var batch_id = new Array
var stock = new Array
var batch = new Array
new Promise(function(resolve, reject) {
console.log('one');
// Getting product product_slug for product_sku
let sql = `SELECT product_slug
FROM inventory_tbl
WHERE product_no = ?`
db.query(sql, [req.params.id], (error, results, fields) => {
if (error) {
throw error;
} else {
var product_slug = results[0].product_slug
resolve(product_slug)
}
})
})
.then(function(value) {
console.log('two');
// Insert product sizes together with its initial stock
for (var x = 0; x < size_slug.length; x++) {
var product_sku = value + size_slug[x]
var slug = size_slug[x]
var name = size_name[x]
var initial_stock = initial_stock[x]
console.log(product_sku);
if (size_slug[x] != '') {
stock.push({
product_sku: product_sku,
product_no: product_no,
size_slug: slug,
size_name: name,
total_stock: initial_stock,
available_stock: initial_stock
})
}
console.log(stock);
}
for (var x = 0; x < size_slug.length; x++) {
var product_sku = value + size_slug[x]
var initial_stock = initial_stock[x]
if (size_slug[x] != '') {
batch.push({
product_no: product_no,
product_sku: product_sku,
production_date: mysql.raw('CURRENT_TIMESTAMP'),
batch_cog: cog,
initial_stock: initial_stock,
stock_left: initial_stock
})
}
console.log(batch);
}
return value
})
.then(function(value) {
console.log('three');
// Insert rows to product_tbl and stock_tbl
for (var i = 0; i < stock.length; i++) {
let sql = `INSERT INTO product_tbl(product_sku, product_no, size_slug, size_name, total_stock, available_stock) VALUES (?, ?, ?, ?, ?, ?)`
db.query(sql, [stock[i].product_sku, req.params.id, stock[i].size_slug, stock[i].size_name, stock[i].total_stock, stock[i].available_stock], (error, results, fields) => {
if (error) throw error
db.query(`SELECT LAST_INSERT_ID() AS id;`, (error, results, fields) => {
stock_id[i] = results[0].id
})
})
sql = `INSERT INTO stocks_tbl(product_no, product_sku, production_date, batch_cog, initial_stock, stock_left) VALUES (?, ?, CURRENT_DATE, ?, ?, ?)`
db.query(sql, [req.params.id, batch[i].product_sku, batch[i].batch_cog, batch[i].initial_stock, batch[i].stock_left], (error, results, fields) => {
if (error) throw error
db.query(`SELECT LAST_INSERT_ID() AS id;`, (error, results, fields) => {
batch_id[i] = results[0].id
})
})
rowsupdated++
}
return value
})
.then(function(value) {
console.log('four');
// Render the web page
if (rowinserted != sizeslug.length) {
req.flash('error', error)
res.redirect('/admin/inventory/product/stock/add/' + req.params.id)
} else {
req.flash('success', 'Data added successfully!')
res.redirect('/admin/inventory/product/stock/add/' + req.params.id)
}
})
.catch(function(error) {
console.log('error');
// Error handler
for (var i = 0; i < rowinserted; i++) {
let sql = `DELETE FROM product_tbl WHERE product_sku = ?`
db.query(sql, [stock_id[i]], (error, results, fields) => {
if (error) throw error
})
sql = `DELETE FROM stocks_tbl WHERE product_sku = ?`
db.query(sql, [batch_id[i]], (error, results, fields) => {
if (error) throw error
})
}
res.redirect('/admin/inventory/product/stock/add/' + req.params.id)
})
})
我数收益：
一
二
错误
编辑：该过程停止（我不知道具体的线路，但根据日志输出）的console.log后（“二”），因为我试图把一些日志，以及之后的for循环，但他们不继续存在。它只是去.catch /错误。
取而代之的输出在console.log('error');字符串转储出您在error处理收到的实际catch对象。它会给的原因和位置失败的其他详细信息。我怀疑以后console.log('two');代码抛出一个异常，然后你无意中下面吞下去。
考虑分拆代码为单独的主题功能。这样，你就能够保持，并当场错误（或错别字）容易得多。
纵观输出，我可以看到，这console.log(product_sku);不获取打印。所以，其实这个问题是var initial_stock = initial_stock[x]。你已经声明了相同名称的局部变量（你那么回调函数）为全局变量（您route.post回调函数），现在你的全局变量initial_stock被屏蔽与当地一个，这是不是一个数组（实际上是不确定的） 。因此，尝试改变变量名其他在then块的东西，看看问题消失。
希望这可以帮助。