Can Slack attachments get sent to a Trello card

Question

Greetings,

I have set up a Zapier form that gets uploaded, creates a card in Trello but if someone attaches something, it wont port into Trello.

I found that the way Zapier stores file is not compatible with Trello so now I have the attachments linked to a Trello board URL that shows up in slack so we can click and drag the attachment to the correct card.

Is there a way to automate it so when and attachment comes through, connected to a dedicated card the attachment can upload to the Trello card without having to click and drag?

Here is how is comes through in Slack:

Thank you in advance for any suggestions!

Arkadiusz Wroblewski · Answer

Zapier distinguishes between real file objects and URLs, Slack file URLs fail in Trello because they require authentication. That's mainly problem.

Try a two-Zap workaround:

Pass the generated Trello Card ID into your Slack step in Zap 1.

Trigger Zap 2 on Slack –> New File, mapping Slack's actual file object into Trello –> Add Attachment to Card using that Card ID.

Zapier offers a pre-built template for this exact Slack-to-Trello file handoff.

https://help.zapier.com/hc/en-us/articles/32816445802893-Use-the-file-upload-field-type-in-Zapier-Forms

If that won't work, then well I recommend contact with https://zapier.com/app/get-help

Cheers

Arek 🤠

Kjrsti Hoole · Answer

Myself and my team have been unsuccessful. We have tried looping in the best we got and still can't manage. From what we are seeing, it is an issue with Trllo allowing the data to import in.

We have just decided to have Zapier send attachments to slack with a URL to the dedicated Trello card and drag and dop it. That has been the only thing to work for us.

Thank you for trying to help Arek! I really do appreciate it.

Arkadiusz Wroblewski · Answer

Test with a single file, map the file object directly to File Attachments, leaving URL Attachments empty.

Check Zap History for the attachment step error; note multiple files need Looping by Zapier.