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//this is short hand not actual code please

var =  trainNum = 0;

// on button click

trainNum++;

// I can't figure out the format to put in so that firebase treats trainNum as the variable and not a string.
 database.ref(Trains/**I WANT THIS TO EQUAL THE trainNum as it increments **).push({
});

//Train number is being stored in database I don't know if this will effect outcome.
ReyAnthonyRenacia
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T. Stevens
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1 Answers1

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You have to get the trainNum from database, and not set it to 0.

Im not sure if that was your question?

Muhaki
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  • Sorry not quite don't the format so that firebase will treat trainNum as the variable and not treat it as a string. – T. Stevens Nov 22 '17 at 19:43
  • It shouldn't treat it as string. You cant increment string. – Muhaki Nov 22 '17 at 19:47
  • If its a string, you should convert it into an int with: var trainInt = parseInt(trainNum); trainInt++; – Muhaki Nov 22 '17 at 19:48
  • Ahh yea, thats right. But you still have to convert it to int, so you can increment the value. – Muhaki Nov 22 '17 at 19:59
  • When you type it into the ref() function for firebase, firebase treats it as a string when saving assigning it as the path. example of firebase database Trian ----TrainNum ------data ----TrainNum What I want to be Train ----1 ------data ----2 ------data – T. Stevens Nov 22 '17 at 20:00
  • Could u try `database.ref(Trains/${trainNum}).push({})` ? – Muhaki Nov 22 '17 at 20:18
  • it would be database.ref("train/" + trainNumber) – T. Stevens Nov 27 '17 at 22:55