How to update document by ID without using model - node.js

Question

I have Card model and I have an API where I'm looking for a document by ID.
app.post("/api/postcomment", async (req,res) => {
const data = req.body
const reqUrl = req.headers.referer
const re = new RegExp('([a-zA-Z0-9]*$)', 'i')
const fixedUrl = reqUrl.match(re)
try {
await Card.update({_id: fixedUrl}, {$push:{'comments': data}})
const card = await Card.findById(fixedUrl)
return res.json(card)
} catch (err) {
throw err
}
})
It works fine. But now I have few more models. All should work the same way to them. But how can I make this code reusable for every model?
Or maybe there is a way to pass a name of my model to API? and then use it like this:
app.post("/api/postcomment", async (req,res, modelName) => {
const data = req.body
const reqUrl = req.headers.referer
const re = new RegExp('([a-zA-Z0-9]*$)', 'i')
const fixedUrl = reqUrl.match(re)
try {
await modelName.update({_id: fixedUrl}, {$push:{'comments': data}})
const item = await modelName.findById(fixedUrl)
return res.json(item )
} catch (err) {
throw err
}
})

Answer 1

Solution1: You can create two helper functions and call the from the router. Both function accept the model object:
let updateDocument = (model, fixedUrl, data) => {
return model.update({ _id: fixedUrl }, { $push: { comments: data }})
}
let getDocument = (model, fixedUrl) => {
return model.findById(fixedUrl)
}
app.post("/api/postcomment", async (req, res, modelName) => {
const data = req.body
const reqUrl = req.headers.referer
const re = new RegExp('([a-zA-Z0-9]*$)', 'i')
const fixedUrl = reqUrl.match(re)
try {
await updateDocument(Card, fixedUrl, data)
const item = await getDocument(Card, fixedUrl)
return res.json(item )
} catch (err) {
throw err
}
})
Solution2: The much better solution is to create a base class (service), with the common functionality. And extend it for each model:
class BaseService {
constructor(model) {
this.model = model;
}
getDocument(data) {
return this.model.findOne(...);
}
updateDocument(data) {
return this.model.update(...);
}
}
class CardService extends BaseService {
constuctor() {
super(Card);
}
}