How to use a variable inside curly brackets?

Plutin

Hi.

 

So my idea is the following: whenever I create a new card (on my board about video games), I want to automatically fetch that game cover image and add it as an attachment (to then appear as the cover image of the card).

 

To realize this idea I am using a Game DB API and Butler to fetch that cover image and then add it as an attachment.

 

This is my current Butler workflow:

 

My issue here is with the second POST. I have made several tests and came to the conclusion that the issue is with using a variable inside curly brackets like it is happening in the POST header: { "client-id": "???", "authorization": "Bearer {httpresponse.access_token}" }

 

On my tests, I also tried adding a comment with the following format "{ {httpresponse.access_token} }" and it saved with exactly that text (i.e. did not replace the variable with its value). But if I used "{httpresponse.access_token}" then it worked correctly.

 

My question is then: is there a way to use variables inside curly brackets in Butler commands?

 

Thank you!

Plutin

To whomever finds himself in the same predicament as me, I leave the solution that worked for me that was achieved with the help from the Trello Support team.

 

Basically, it is not possible to use the `httpresponse` variable inside a JSON object (i.e. inside curly brackets) due to the way that the variable is handled (tip: has to do with regex parsing).

 

So the solution is to store the value that will be used inside a JSON object in another place, like a Custom Field or the card description and then use THAT variable inside the JSON object.

And that's it.

 

In my case, after I received the response from the first POST, I stored the {httpresponse.access_token} variable value in the card description and then for the second POST I used the card description variable to fill the header, like so: { "client-id": "???", "authorization": "Bearer {carddescription}" }

This is the flow:

 

Best regards!