Call parent function inside callback function with same argument in NodeJS

Question

I have the bellow function

const generate_data = require('./helpers/generate_train_data');
const permutate_data = require('./helpers/permutate_data');

var COMPANY = 'test-company';
var INVOICES = ['invoice2.pdf','invoice4.pdf','invoice5.pdf'];

generate_data.generate_data(COMPANY, INVOICES,(check)=>{
    if(check){
        console.log('Success, training data created!');
    }
    else{
        //Call generate_data.generate_date again with SAME INPUT 
    }
});

Basically i am waiting for a return falue of the generate_date module, and if that value if true i just just a simple printout, but if that value is false i need to call again the same function

generate_data.generate_data(COMPANY, INVOICES, (AND HERE THE SAME CALLBACK...)

I tried using generate_data.generate_data.call(arguments.callee.caller), but i get undefined value fo the arguments.callee.caller..

lankovova · Accepted Answer · 2019-04-21 11:43:10Z

1

You can achive this by storing callback in separate function, so you reference it inside

const customCallback = (check) => {
    if (check) {
        console.log('Success, training data created!');
    } else {
        //Call generate_data.generate_date again with SAME INPUT 
        generate_data.generate_data(COMPANY, INVOICES, customCallback);
    }
}

generate_data.generate_data(COMPANY, INVOICES, customCallback);

answered Apr 21, 2019 at 11:43

lankovova

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2 Comments

Kristijan Stefanoski Over a year ago

Thanks, didn't even think about separating it, it troubled me badly today... Cheers.

lankovova Over a year ago

@KristijanStefanoski Glad to help. Also do not forget to mark an answer as correct if it solved your probem)

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