Node Limit Response Object

Asked Mar 04 '19 at 23:55

Active Mar 04 '19 at 23:55

Viewed 19 times

I've built an application which allows users to submit a request on the front end, which is then handled by node and fires off a python script. This python script then returns a data object to node, sometimes multiple hundreds of objects in an array. If possible I would like to limit what I send back to the client in node, say the first 50 objects. Can this be done ?

Current code:

app.post('/upload', upload.single('myImage'), function (req, res, next) {

    const options = {
        scriptPath: './playground/',
        args: ['--graph', './playground/tf_files/retrained_graph.pb', '--image', './uploads/' + req.file.filename]
    };

    PythonShell.run('scripts/label_image.py', options, function (err, pyRes) {
        if (err) throw err;
        const obj = JSON.parse(pyRes[1])
        res.send({ result: obj }); // I would like to limit this obj
    });
});

asked Mar 04 '19 at 23:55

alienbuild

Possible duplicate of [Split array into chunks](https://stackoverflow.com/questions/8495687/split-array-into-chunks) – Jake Holzinger Mar 05 '19 at 00:01
You mean, pagination? or only the first 50 objects? – Deano Mar 05 '19 at 00:01
@deano hey deano, just the first 50 objects. I can handle the pagination in react if need be. – alienbuild Mar 05 '19 at 00:02
@alinbuild You can use array prototype method splice to chop off the array after 50th item ```obj.splice(49);``` – Deano Mar 05 '19 at 00:04
ah of course - thank you. – alienbuild Mar 05 '19 at 00:12

Node Limit Response Object

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