How to pass boolean values using Postman?

Ask the Experts and Postman Tips
1

Using Postman, I passed boolean value, But I got error.
The value which I pass to server through Postman is not a boolean value.

I just input True in value form.
is it wrong?

How to pass boolean value?

2

It is unclear from your question how exactly you are ending the data, but this will not matter a lot.

Regardless of the format (query params, JSON body) it is the job of the backend to parse and validate the request.

So even if you send a parameter like “active=true”, it is still a string, this is how the HTTP protocol works.

Hope this helps clarify the mystery.

1 Like
3

Hi Nelson

You can parse the string as boolean data type as below -

var bflag = Boolean(“true”);
var bflag1 = Boolean(“false”);

Let me know if it works or not!

4

I mean using Postman how to pass boolean values. You wrote js code, right?

5

So, there is no way to pass boolean value to server using Postman? because through the HTTP protocol just string-formatted data passed?

Then I have to do format data on server?

6

Hi there,

I’m trying to randomize a true/false boolean value, which I want to assign to a variable that I can then pass to my Body and post as part of my JSON. I tried this:

var arrayCert = [true, false];
pm.globals.set('certVal',  arrayCert[Math.floor(Math.random()*arrayCert.length)]);

Which does get me a random variable in certVal . But when I try to pass that variable in my Body like so:

"Certified": "{{certVal}}",

I get this message:

"INVALID_REQUEST_PARAMETER: 'Certified' Expected type boolean but found type string; ",

I think the double quotes in the body is passing the variable as a string, hence the error. If I change it to:

"Certified": true,

Then the post works as expected. Is there anyway I can pass a random boolean in this way?

Thanks so much for any help.

Ed

7

@ed_truqc Variable references of the form {{var_name}} are resolved literally within all parts of a request, so the following will work:

"Certified": {{certVal}},

As there are no enclosing quotes around {{certVal}}, it will be resolved to true/false, which will get your requests working regularly :smile:

1 Like
8

you can use 1 instead of true and 0 instead of false. And convert it to bool values within your backend.

9

it works, thank you!

11

Sorry to say, I didn’t get it properly…

12

Hey @descent-module-obs19 :wave:

Welcome to the Postman community :postman:

As you’re responding to a topic over 10 months after the last post - can I ask that you raise a new topic with all of your details so that we can help with your specific issue.

I’m going to close this topic now.