TypeError: req.next is not a function

Question

Trying to practice Mongoose delete document by creating a delete page, which shows all todo-items.

Here is my current app.get("/delete")
https://code.sololearn.com/W41lckb7hQL2/?ref=app

I don't know how to get all documents from all collections, so stupidly using for loop, but then can't res.render in find callback like app.get("/list")

Got titled error...

If commented out res.render and keep console.log, all documents are loaded into fulltodolist successfully.

Answer 1

yeah, chaining then within variable length of promise is impossible.
you can use async/await ( https://code.sololearn.com/W6ETN0lznWvb/?ref=app [i havent tested it] ) to replace then. exec() is used to return a Promise, so we can use async and await.

kinda like this
https://code.sololearn.com/WUutQ8OC3xhy/?ref=app

Answer 2

i'm not fully understand, so you want to get all the data with name listed in todoListNames ?

Answer 3

Yes todoListNames are the Collection names.

I want to get all Document from all Collection.

Which I already did.

But how to pass them into the view engine?

where should i res.render()?

for single page, i do it like this:

https://code.sololearn.com/WVe18BrqW0Bq/?ref=app

put render in callback of find

Answer 4

I see.

Let me try tomorrow ~

Thanks~

Answer 5

Taste

at last, i solved with a for loop 😅

https://code.sololearn.com/W3uH2cQK7l48/?ref=app