Is it possible to send an array with the Postman Chrome extension?

I've been using Postman Chrome extension to test out my API and would like to send an array of IDs via post. Is there a way to send something list this as a parameter in Postman?

{ user_ids: ["1234", "5678"] } 

22 Answers

You need to suffix your variable name with [] like this:

If that doesn't work, try not putting indexes in brackets:

my_array[] value1 my_array[] value2 

Note:

• If you are using the postman packaged app, you can send an array by selecting raw / json (instead of form-data). Also, make sure to set Content-Type as application/json in Headers tab. Here is example for raw data {"user_ids": ["123" "233"]}, don't forget the quotes!

• If you are using the postman REST client you have to use the method I described above because passing data as raw (json) won't work. There is a bug in the postman REST client (At least I get the bug when I use 0.8.4.6).

For me did not work with array[0], array1, .. or array[], array[], ... . It works more simply:

Here is my solution:

use form-data and edit as below:

Key Value box[] a box[n1] b box[n2][] c box[n2][] d 

and you will get an array like this:

{"box":{"0":"a","n1":"b","n2":["c","d"]}} 

If you want an array of dicts, try this:

I also had that problem, and solved it by doing the following:

1 - Going to the request header configuration and added the following:

Accept : application/json, text/plain, */* Content-Type : application/json;charset=UTF-8 

2 - To send the json array, I went to raw json format and set the user_ids to array:

user_ids: ["bbbbbbbbbb","aaaaaaaaaa","987654321","123456789"] 

It is important to know, that the VALUE box is only allowed to contain a numeral value (no specifiers).

If you want to send e.g. an array of "messages" with Postman, each having a list of key/value pairs, enter e.g. messages[][reason] into the KEY box and the value of reason into the VALUE box:

The server will receive:

{"messages"=>[{"reason"=>"scrolled", "tabid"=>"2"}, {"reason"=>"reload", "tabid"=>"1"}], "endpoint"=>{}} 

As mentioned by @pinouchon you can pass it with the help of array index

my_array[0] value my_array[1] value In addition to this, to pass list of hashes, you can follow something like: my_array[0][key1] value1 my_array[0][key2] value2 

Example:

To pass param1=[{name:test_name, value:test_value}, {...}] param1[0][name] test_name param1[0][value] test_value 

Set Body as raw and form the array as follows:

Go to Header and select Content-Type = application/json then go to body and select raw and then pass an array.

this worked for me. to pass an array of Item object {ItemID,ColorID,SizeID,Quntity}

in headers set

content-type : application/x-www-form-urlencoded 

In body select option

x-www-form-urlencoded

and insert data as json array

user_ids : ["1234", "5678"] 

{ "data" : [ { "key1" : "value1", "key2" : "value2" }, { "key01" : "value01", "key02" : "value02" }, { "key10" : "value10", "key20" : "value20" } ] } 

You can pass like this.

This also works for lists within the object:

Id:37 IdParent:26 Name:Poplet Values[0].Id:1349 Values[0].Name:SomeName Values[1].Id:1350 Values[1].Name:AnotherName 

the equivalent JSON would be:

{ "Id": 37, "IdParent": 26, "Name": "Poplet", "Values": [ { "Id": 1349, "Name": "SomeName" }, { "Id": 1350, "Name": "AnotherName" } ] } 

In form-data you can pass a array like this

and in backend you will fetch it like a

"tags"=>["aaaa", "bbb"] 

In my case I've to pass two values in a array so I write it two times

Choose either form-data or urlencoded and use the same key "user_ids". The server should receive it as an array.

In form-data,

 key value user_ids[] 1234 user_ids[] 5678 

My back-end is written in Ruby on Rails. This is how I sent the array params using Postman. It worked for me.

UPDATE

I'm using x-www-form-urlencoded. I believe it will work too for form-data.

I tried all solution here and in other posts, but nothing helped.

The only answer helped me:
Adding [FromBody] attribute before decleration of parameter in function signature:

[Route("MyFunc")] public string MyFunc([FromBody] string[] obj) 

Supposing you have the array of object below,

features: [ { title: { type: String }, type: { type: String }, }, ], 

To add the values on the form data on the postman, add it this way

features[title] features[type] 

Check also the image below

Here is something that worked for me

{ "user_ids":["[1234, 5678]"] } 

I believe it depends on how the backend is setup most of the time.

N.B Now we are in 2022 if All of the above solutions didn't, just don't panic. pass array name with is value without a bracket and the add it multiple time, just link how the image below is showing. it should work just fine. If It does work, buy me some coffee, hhh

The accepted question did not work for me.

To send an array using form data there's no need to use brackets. Just send that specific array using the same name in multiple fields.

Like:

my_array:value_1 my_array:value_2