I am trying to write a wrapper around Google Sheets' importdata() in code.gs:
100
101 function cryptofinance(token) {
102 var currentCell = SpreadsheetApp.getCurrentCell();
103 currentCell.setValue('=importdata("https://cryptoprices.cc/"+ token)');
104 }
105
106 ...
The idea is to call the function from any sheet in the spreadsheet to get the price of any crypto currency token:
| A
+---+-------------------------+
| 1 | =cryptofinance("aion") |
+---+-------------------------+
I get an error though when I try this:
| A
+---+-------------------------+
| 1 | #ERROR |
+---+-------------------------+
#ERROR Exception: You do not have permission to perform that action. (line 102).
Why is this happening and how can I solve it?
Custom functions can be used to return values, period.
Custom function can't be used to execute any method that require authorization to run and can't modify attributes of the cell / range that contain the formula using the custom function. Ref. https://developers.google.com/apps-script/guides/sheets/functions
You might use a UrlFetchApp service in a custom function to call external services but you still have the restrictions of custom function i.e. 30 seconds execution time limit.
Related
function cryptofinance(token = "AION") {
//Logger.log(UrlFetchApp.fetch(`https://cryptoprices.cc/${token}/`));
return UrlFetchApp.fetch(`https://cryptoprices.cc/${token}/`).getContentText();
}
Some permissions are assumed by Apps Scripts when running functions but in some instances you need to update your appsscripts.json with the correct OAuth permissions manually to give permission to access data.
To show your appsscripts.json, navigate to your project settings and toggle the option "Show 'appsscript.json' manifest file in editor". This should reveal it in the sidebar in Apps Scripts.
Once in the appsscript.json, add
"oauthScopes": [
"https://www.googleapis.com/auth/spreadsheets",
]
You can read more about it here