Uploading attachment using REST API

Development
1

I am trying to upload an image file as an attachment to a submission using the instructions in this documentation. The post request is successful, however when I download and open the image attachment I encounter this error:

image
image626×833 4.57 KB

I used the python sudo code below. And the post request is successful however the file format seems to be wrong. I have also tried the 'Content-Type': 'image/jpeg' header with the same result.

import requests
from PIL import Image

img = Image.open('{path of image}')
binary_data = img.tobytes()

headers = {
	'Content-Type': '*/*',
	'Authorization': 'Bearer {}'.format(token)
}

url = 'https://private-3b1543-odkcentral.apiary-mock.com/v1/projects/projectId/forms/xmlFormId/submissions/instanceId/attachments/filename'
request = request.post(url, data=binary_data, headers=headers)
print(request.status_code)

Has anyone tried uploading an attachment using the API? How did you do it and made the file format correct?

2

You can try with this code to send an attachment in a submission:

# Uploading an attachment

# Libraries
import requests
import json

# Modify headers
headers = {
    'Authorization': f'Bearer {token}',
    'Content-Type': 'image/jpeg'
}

# File name of the attachment
filename = "1234567891011.jpg"

# Send "imagefile.jpg" in the attachment field "1234567891011.jpg"
with open("imagefile.jpg", "rb") as f:
    # Request POST to send attachment
    # Instance ID
    instance_id = "uuid:12f345dc-67a8-9101-ab11-213141e5d1bdb"
    response = requests.post(f'{base_url}/v1/projects/{project_id}/forms/{xml_form_id}/submissions/{instance_id}/attachments/{filename}',
                           data=f, headers=headers)
    response = response.json()
    print(json.dumps(response, indent=4))