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Power Platform Community / Forums / Power Apps / CUSTOM CONNECTOR: Rese...
Power Apps
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CUSTOM CONNECTOR: Research and findings

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Posted on by Community Power Pla... Microsoft Employee

Entering my 3rd day straight on a complex GET/POST nested JSON schema problem. Thought I'd share some interesting findings I've found:

  1. A schema that returns "Success" in the Custom Connector "Test" area, does not directly transfer to a Custom Connector POST function ( myCustomConnector.POST({<things:andStuff>}) ) in PowerApps.
    1. This really sucks and its largely due, I believe, to 2.

  2. When dealing with POST schemas, " [ ] " 's <> work. The Custom Connector function needs "Table({<your schema here>}). It will not "see into" square brackets. 
    1. You can interrogate the needed schema by substituting [ for Table(, hover over the red squiggly intellisense, and build the correct schema from this. (handy but suuuuper-hacky).

Hope this helps!

Categories:
Building Power Apps
I have the same question (0)
  • Verified answer
    v-yuxima-msft Profile Picture
    v-yuxima-msft Microsoft Employee on at

    Hi @ericonline ,

     

    Thanks for your information.

    This is very helpful.

     

    Best Regards.

    Yumia

  • Community Power Platform Member Profile Picture
    Community Power Pla... Microsoft Employee on at

    Adding on to this... kind of related. 

    • For a ClearCollect statement that does NOT use a Custom Connector-defined JSON schema, I'm UNABLE to use Table()!
    • I MUST use "[ ]" 's instead of Table()!
    • Weird.

    Example:

    • Does not work:
    • ClearCollect(colSample,
 Table(
 {parameter: "test", paramValue: 123},
 {parameter: "toast", paramValue: 345},
 {parameter: "toots", paramValue: 567}
 )
)
    • Does work:
    • ClearCollect(colSample,
 [
 {parameter: "test", paramValue: 123},
 {parameter: "toast", paramValue: 345},
 {parameter: "toots", paramValue: 567}
 ]
)
      Hope this helps someone else too!
  • joshbooker Profile Picture
    joshbooker 104 on at

    @ericonline 

     

    I think this may have something to do with the fact that ability to add so-called 'tabular-capabilities' is absent in custom connectors.

     

    See: https://powerusers.microsoft.com/t5/PowerApps-Ideas/Custom-API-with-tabular-capabilities/idi-p/13394

     

    HTH,

    Josh

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