Can't convert File base64ToString

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Posted on by Joao_Macau

Hello,

I'm entering in the real of power automate and i'm loving it, but i've a problem..

I'm trying to convert a file that contain a JSON code and I'm pulling the file from Onedrive Bussines with "Get file Content"

The output message from the "Get File content" Action provided my information regarding the $Content-type.

Next i'm using compose, and the flowing formula, to convert the content of the file to do a Parse JSON after.

base64ToString(triggerBody()['$content'])

When i run the flow the following message appears:

" Unable to process template language expressions in action 'Compose' inputs at line '1' and column '5995': 'The template language expression 'base64ToString(triggerBody()['$content'])' cannot be evaluated because property '$content' doesn't exist, available properties are ''. Please see https://aka.ms/logicexpressions for usage details.'. "

I know for a fact that I've the "$content'" in my file. why does this error appears?

best regards,

João Macau

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CFernandes 8,482 Most Valuable Professional on at

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Hey @Joao_Macau ,

Try the approch below-

Get File Content - Infer Content Type > NO

Formula in the compose action -

base64ToString(outputs('Get_file_content_using_path')?['body']?['$content'])

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Joao_Macau 40 on at

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Thank very much for the reply!

I've change the flow and the output was something like this:
"
"{\u0000\r\u0000\n\u0000 \u0000 \u0000\"\u0000n\u0000a\u0000m\u0000e\u0000\"\u0000:\u0000 \u0000\"\u00005\u0000d\u0000a\u0000a\u00003\u00007\u00003\u0000e\u0000-\u00004\u00002\u00001\u0000a\u0000-\u00004\u00007\u00000\u0000d\u0000-\u00009\u00009\u0000c\u00007\u0000-\u00005\u0000e\u00004\u00006\u00004\u00009\u0000e\u00004\u00006\u00009\u00002\u00004\u0000\"\u0000,\u0000\r\u0000\n\u0000 \u0000 "

Is this related with encoding?

My original file is the DataModelShema file in a PowerBi.

When I converted it to a .json file it work but I'm trying to use the original file. Is it possible?

best regards,
João

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Community Power Pla... Microsoft Employee on at

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This helped bigly. I spent hours trying to import Json from OneDrive, Google drive etc. I tried:
base64ToString(triggerBody()?['$content'])
base64ToString(triggerBody()?['$content'])
json(base64ToString(triggerOutputs()['outputs']['body']['$content']))
base64ToString(triggerBody()['$content'])

But your solution is the one that worked for me.
Thank you.

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