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How to correctly set filename (not name) of card attachments via the Trello REST API

Celine Hernia
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October 19, 2022

I have a function/method that creates a new attachment, particularly a text file, to a card. It successfully attaches the file to the card but when downloaded locally, the filename is always set to "Upload", not the actual filename "*.txt". Here's my function:

 

def create_attachment_on_card(self, card_id, filename):
"""
creates a file attachment on a card
"""
url = f"https://api.trello.com/1/cards/{card_id}/attachments"

with open(f'dataset/{filename}.txt', 'rb') as file:
content = file.read()

query = {
'key': self.key,
'token': self.token,
'name': f'{filename}.txt',
'file': content,
'mimeType': 'text/plain'
}

response = requests.request(
"POST",
url,
headers=self.std_headers,
params=query
)
return response.status_code

 

I would greatly appreciate any input on this. Thank you!

1 answer

0 votes
Adam Cao
Marketplace Partner
Marketplace Partners provide apps and integrations available on the Atlassian Marketplace that extend the power of Atlassian products.
October 19, 2022

I would recommend setting the filename field in your multipart/form-data payload that you send to Trello when you upload the attachment (i.e. your other function).

See https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition 

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