我有2个架构。商店和产品。一个商店可以有很多产品。但我也有多家商店。假设我有5家商店,每个商店都有自己的产品。我能够保存产品并分别在商店中找到其ID。但是我正在努力输出属于一个特定商店的产品。我可以按他们的ID输出每个商店,并查看添加的所有产品ID。但是,如何获得商店中每种产品的产品名称,描述等(所有产品字段)?
我的项目是这样的:创建一个商店,然后通过选择商店的ID并将产品ID存储在商店中来向每个商店添加产品。然后在我看来,我希望最终能够选择一家商店并展示商店内的所有产品。
我坚持获取其余产品字段!我已经阅读了文档。也许我缺少什么?请帮忙。
我的产品型号
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const ProductSchema = new Schema({
shopName: {
type: String,
},
product: {
type: String,
required: true
},
productDescription: {
type: String,
required: true,
},
productPrice: {
type: Number,
required: true
},
inStock: {
type: Boolean,
required: true
},
totalStock: {
type: Number,
required: true
},
productImage: {
type: Object,
required: true,
data: Buffer,
contentType: String
}
});
const Product = mongoose.model('Product', ProductSchema);
module.exports = Product;
我的商店型号:
const mongoose = require('mongoose');
const Schema = mongoose.Schema;
const ShopSchema = new Schema({
shopName: {
type: String,
required: true
},
shopImage: {
type: Object,
required: true,
data: Buffer,
contentType: String
},
shopDescription: {
type: String,
required: true
},
shopCategory: {
type: String,
required: true
},
products: [{
type: Schema.Types.ObjectId,
ref: 'productModel'
}]
}, { timestamps:true });
const Shop = mongoose.model('Shop', ShopSchema);
module.exports = Shop;
我的路线:
//get all shops
//WORKS
router.get('/shops', (req, res) => {
model.Shop.find()
.then(result => res.render('shop/shops', { title: 'Shops', shops: result }))
.catch(err => console.log(err));
});
//get all products
// HOW TO GET THE PRODUCT NAME, PRICE, DESCR ETC??
router.get('/products/:id', (req, res) => {
model.Product.find()
.then(result => res.render('shop/products', { title: 'Products View', products: result }))
.catch(err => console.log(err));
});
// Route for retrieving a Shop by id and populating it's Product.
// Returns the shop with the product ids, but how to get the product fields???
router.get('/shops/:id', (req, res) => {
model.Shop.findOne({ _id: req.params.id })
.populate("product", 'product')
.then(result => {
return res.json(result)
})
.catch(err => console.log(err));
});
// Route for creating a new Shop
//WORKS
router.post('/add-shop', upload.single('shopImage'), (req, res) => {
const shop = new model.Shop({
shopName: req.body.shopName,
shopCategory: req.body.shopCategory,
shopDescription: req.body.shopDescription,
shopImage: req.file
});
shop.save()
.then(result => res.redirect('/shops'))
.catch(err => console.log(err));
});
// Route for creating a new product and updating Shop "productName" field with it
//WORKS
router.post('/shop/:id', upload.single('productImage'), (req, res) => {
const id = req.params.id;
const product = new model.Product({
product: req.body.product,
productDescription: req.body.productDescription,
productPrice: req.body.productPrice,
inStock: req.body.inStock,
totalStock: req.body.totalStock,
productImage: req.file
})
product.save()
.then(productModel => {
return model.Shop.findOneAndUpdate({ _id: req.params.id }, {$push: {products: productModel._id}}, {new: true})
})
.then(result => res.redirect('/products/' + id))
.catch(err => console.log(err));
});
//get products add page
//WORKS
router.get('/add-product', (req, res) => {
model.Shop.find()
.then(result => res.render('shop/add-product', { title: 'Add Product', shops: result, id: result._id }))
.catch(err => console.log(err));
});
一家商店的JSON输出。产品仅显示ID。是对的吗?我是新来的。
{
"products": [
"5f01c81db57d61236ddefb95",
"5f01c878b57d61236ddefb96",
"5f01cd9735fee92874b446b2",
"5f01ceddf803982924ecb165"
],
"_id": "5f006113fe371c497fe4d5f6",
"shopName": "Makro",
"shopCategory": "Retail",
"shopDescription": "A massive retail shop",
"shopImage": {
"fieldname": "shopImage",
"originalname": "makro.png",
"encoding": "7bit",
"mimetype": "image/png",
"destination": "public/images/uploads/shop-images",
"filename": "19ba3c0396f8dfaa63aceaaad24e919f",
"path": "public/images/uploads/shop-images/19ba3c0396f8dfaa63aceaaad24e919f",
"size": 97140
},
"createdAt": "2020-07-04T10:59:31.705Z",
"updatedAt": "2020-07-05T13:00:13.802Z",
"__v": 0
}
答案 0 :(得分:0)
完全记录在mongo Doc 中。 请看看 https://docs.mongodb.com/manual/tutorial/model-embedded-one-to-many-relationships-between-documents/
带有猫鼬的nodejs的示例:
答案 1 :(得分:0)
仅通过产品,因此它将提供所有详细信息:像这样
router.get('/shops/:id', (req, res) => {
model.Shop.findOne({ _id: req.params.id })
.populate('product')
.then(result => {
return res.json(result)
})
.catch(err => console.log(err));
});
要获取产品详细信息,请执行所有操作。您可以使用like-
result.productPrice ...