'What is this error "Cast to ObjectId failed for value "shop.css" (type string) at path "_id" for model "Product""?

I am trying to extract detail of products entered by that administrator.

Here is the part of code dealing with that:

router.get('/admin-product/:userid', (req, res, next)=>{
    
    Product.find({_id: req.params.userid})    
           .then(prods=>{
                res.render('adminproduct', {
                    prods: prods, 
                    userid: req.params.userid, 
                    name:"vinod"
                });
           })
           .catch(err=>{
               console.log(err);
           })
    
    
})

But when i execute the code i get error as Cast to ObjectId failed for value "shop.css" (type string) at path "_id" for model "Product"

Guide me on what is causing this problem and how to eliminate it?

node.js


Solution 1:[1]

Looks like your frontend/client is requesting the shop.css styles with the base path /admin-product, i.e. HTTP GET <yourhost>:/admin-product/shop.css.

Since you've declared :usedId as a path parameter the value shop.css will be passed to mongoose through req.params.userid.

Looks to me like you should either fix this on the client-side or fix serving the static content through /admin-product.

Solution 2:[2]

I don't know the reason but all I had to do was to change href="./shop.css" to href="/shop.css" in the template link. By doing that the problem was resolved.

Please comment if someone has an explanation for this.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 eol
Solution 2 Pawan

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