With Postman, I can attach files in requests with form-data, I can also send nested JSON object in raw format, but how can I do both: sending nested-structure data with file, e.g:

"data": {
    "normal_fields": {
        "field1": "value1",
        "field2": "value2"
    },
    "image_file": <file>
}

With Postman, I can attach files in requests with form-data, I can also send nested JSON object in raw format, but how can I do both: sending nested-structure data with file, e.g:

"data": {
    "normal_fields": {
        "field1": "value1",
        "field2": "value2"
    },
    "image_file": <file>
}

• javascript
• json
• httprequest
• postman

• just convert your file to byte array and add the result to your JSON – Daemon025 Commented May 20, 2015 at 14:07

4 Answers 4

Try setting values like below and choose file to upload.

For anyone looking a few years later, you need to send it as normal_fields.field1 something like

It didn't worked for me like that. For me only worked this way:

property[nested_field1]
property[nested_field2]

or arrays with objects:

array[0][nested_field1]
array[0][nested_field2]
array[1][nested_field1]
array[1][nested_field2]

In case if someone needs to send an array of files, this syntax worked for me:

<field_name>[0]
<field_name>[1]
...
<field_name>[n]

But if you are sending files as an array of nested objects: I.e.

{
    "files": [
        {
            "file": <file>
        },
        {
            "file": <file>
        },
    ]
}

Then try this:

files[0]file
files[1]file