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Need help with Collections

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Posted on by Community Power Pla... Microsoft Employee

Hi,

In a screen there are 10 questions, and user will select, Yes or No radio buttons. Upon clicking on submit button, coverages associated to the questions should be shown in the next screen based on configuration table.

Coverages are based on scenarios like, show Coverage4 if Q1 is Yes and Q2 is No. So created a configuration table accordingly like below:

Configuration table:

SCN-1	Q1	Yes	Cov4
SCN-1	Q2	No	Cov4
SCN-2	Q2	Yes	Cov5
SCN-2	Q3	No	Cov5
SCN-3	Q3	Yes	Cov6
SCN-4	Q4	Yes	Cov7
SCN-4	Q5	Yes	Cov7

Implementation: On App Start, created a collection to hold the configuration table.

ClearCollect(configTable, ConfigurationTables);
ClearCollect(uniqueScenariosColl, Distinct(configTable,Scenarios));

uniqueScenarioColl = ["SCN-1","SCN-2","SCN-3",...........]

Now on click on submit button, saved user's response in collection like below:

userResponseCol = [{q="Q01",r="Yes"},{q="Q02",r="No"},{q="Q03",r="No"}]

I am not able to merge the below two ForAll conditions. logic is loop all scenarios, get first scenario conditions, here Q1 is Yes and Q2 is No, check if two records are in userResponseColl, only then add the Cov4 to the finalCoverageCollection, then check second scenario and go on..

ForAll(uniqueScenariosColl,Collect(scenarioColl,Filter(configTable,Scenarios=Value)));

ForAll(scenarioColl,ForAll(userResponseCol, If(ThisRecord.q= QuestionId And ThisRecord.r = Response,Collect(matchColl,CoverageId))));
If(CountRows(matchColl) = CountRows(scenarioColl),Collect(finalCoverageCollection,matchColl));

Clear(scenarioColl); Clear(matchColl);

Appreciate your help here.

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Building Power Apps

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EddieE 4,650 Moderator on at

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@Anonymous
Try using As to separate off your 2 collection in the second ForAll(), ie

ForAll(
scenarioColl As scCol,
ForAll(
userResponseCol As urCol,
….
)

Then use scCol and urCol to reference the different collections. Using ThisRecord doesn’t usually work inside 2 x ForAll statements

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Community Power Pla... Microsoft Employee on at

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Thanks for the response. Whatever you have mentioned i.e., second ForAll is working fine, what i am looking for - include the second ForAll within first ForAll and make it work.
First loop: ForAll(uniqueScenariosColl,Collect(scenarioColl,Filter(configTable,Scenarios=Value)));
Second ForAll: ForAll(scenarioColl,ForAll(userResponseCol, If(ThisRecord.q= QuestionId And ThisRecord.r = Response,Collect(matchColl,CoverageId))));

merge these two and also need to include below two statements in second ForAll.
If(CountRows(matchColl) = CountRows(scenarioColl),Collect(finalCoverageCollection,matchColl));
Clear(scenarioColl); Clear(matchColl);

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EddieE 4,650 Moderator on at

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@Anonymous
Here a method to get what you want - ie Coverage values - but you may need to adjust it slightly?

App OnStart
// App OnStart ClearCollect( configTable, {Scenario: "SCN-1", Question: "Q1", QResponse: "Yes", Coverage: "Cov4"}, {Scenario: "SCN-1", Question: "Q2", QResponse: "No", Coverage: "Cov4"}, {Scenario: "SCN-2", Question: "Q2", QResponse: "Yes", Coverage: "Cov5"}, {Scenario: "SCN-2", Question: "Q3", QResponse: "No", Coverage: "Cov5"}, {Scenario: "SCN-3", Question: "Q3", QResponse: "Yes", Coverage: "Cov6"}, {Scenario: "SCN-4", Question: "Q4", QResponse: "Yes", Coverage: "Cov7"}, {Scenario: "SCN-4", Question: "Q5", QResponse: "Yes", Coverage: "Cov7"} ); // responses table with 2 extra columns ClearCollect( responsesInitial, AddColumns(configTable, "CoverageResponse", "", "ShowValue", "" ) );
I've added two columns to the original configTable in a new collection that can be used below

Question gallery
Distinct(configTable, Question).Result

Yes/No Radio button OnChange
UpdateIf( responsesInitial, Question = ThisItem.Result , { CoverageResponse: rd5.Selected.Value } );

Submit button
ClearCollect( userResponseCol, ForAll( responsesInitial, { Scenario: Scenario, Question: Question, QResponse: QResponse, Coverage: Coverage, CoverageResponse: CoverageResponse, ShowValue: If(QResponse = CoverageResponse, 1,0) } ) ); Clear(finalCoverageCollection); ForAll( Distinct(userResponseCol, Scenario) As ds, If( CountRows( Filter(userResponseCol, Scenario = ds.Result)) = Sum( Filter(userResponseCol, Scenario = ds.Result),ShowValue ), Collect( finalCoverageCollection, LookUp( userResponseCol, Scenario = ds.Result, Coverage) ) ) )

Examples of use using your data above
Hopefully this makes sense and gets you what you need?

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Community Power Pla... Microsoft Employee on at

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Thank you @EddieE for the response. I solved my issue by merging the loops like said above, and really liked your approach as well. Appreciate your help.

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