Send variable from post request to a simple middleware with NodeJs

I have a this app.post :

app.post('/upload', upload.single('file'), (req, res,next) => {
let file = req.file.path;
let var1= path.basename(file,path.extname(file));
req.var1=var1;
console.log("le nom du fichier est : " + req.var1);
next();
})


Now i want to send this var1 to this middleware function because i am working with react and i want to dispatch it with ComponentDidMount but i get always undefined :

function last(req,res,next){
console.log(req.var1);

let results={

first:req.var1,

others:'req.var2'
}
res.send(results);

}
app.post('/Convert',last);


How can I resolve this ?

Where in the request chain is the last middleware attached? Presumably after the post? FWIW I would say res.locals would be a better fit here.
– James
Jun 29 at 9:57

last

post

where i shall use res.locals ? I put it in the app.post but no way it doesn't resolve the problem
– khalfallah asma
Jun 29 at 11:31

I'm suggesting you replace req.var1 = var1 with res.locals.var1 = var1 and then when fetching back out the result you can use first: res.locals.var1. By all accounts it shouldn't matter, adding properties to the request object should do the same thing, it's just res.locals is a mechanism already in place for this type of thing (moreso if you want to render data into a view). If neither works then it sounds like your middleware setup is wrong, you'd need to show more code.
– James
Jun 29 at 11:37

req.var1 = var1

res.locals.var1 = var1

first: res.locals.var1

res.locals

Thank u James , i appreciate your help . It doesn't work but maybe i find another solution thnxx a lot
– khalfallah asma
2 days ago

The point I am making is both of these approaches should work, the fact they aren't suggests to me it's a problem with how you've setup your middleware - if you show this code then perhaps I could help further
– James
2 days ago

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