How to use ForAll() inside ForAll()

[Anonymous]

Hello all,
I would like to know how to use ForAll() function inside another ForAll().
Inside ForAll() function, we can use ThisRecord property to retrieve selected record values.
It seems to be allowed to nest second level ForAll() function, but when we do it, ThisRecord property retrieve only last ForAll() level. So, my questions are
- Is it really allowed to nest ForAll() function?
- how to retrieve first level ForAll() values inside second ForAll() level?
If it is not allowed to nest ForAll() function, which formula (or tips) should be used to deliver same result? (meaning Loop insinde another loop)

Thank's

[CNT]

@Anonymous  Use As for the Outer lever and refer the outer level using that. ForAll(firstLoop As varFirstLoop ......

[RandyHayes]

@Anonymous 

Keep in mind that a ForAll is not a For/Loop.  A ForAll is a function that returns a table based on iterations over another table.  So, if you are looking to do what you are doing to try and make a ForAll into a ForLoop, your challenges are ahead with the concept of a for/loop inside of a for/loop because again...ForAll is a table function.  Can they be nested...sure, if you need a table within a table, it is perfectly fine.  

As for referring to tables - PowerApps as has As statement that can be used to provide a named reference to your table (i.e. the ForAll).  

As for ThisRecord - ThisRecord refers to the closes table operation function.  So, ThisRecord inside of a ForAll refers to the current iteration record of the ForAll.  If you have, let's say, a Filter inside of the ForAll to Filter another table to include in your table record of the ForAll, then ThisRecord inside of the Filter would refer to the Filter record.  Best to use the As statement to be clear on what you are referring to.

I hope this is helpful for you.

[Anonymous · Accepted solution]

Thank you @CNT and @RandyHayes to your reactivity.
It is really appreciated !

I'm using tables on each ForAll() level :  first ForAll() will give parameters to the filter used to the second ForAll().

Thank you !

[RandyHayes]

@Anonymous 

Sounds good.  If you get stuck, feel free to post back your formula and I'd be happy to troubleshoot and correct it.

[tssykmr]

I am trying to do something similar.. I have 2 items in gallery3 and a few modifiers that are different for each gallery item.  The patch is overwriting both item 1 and 2 from the gallery with the modifiers only for item 2 instead of the correct respective modifiers (modifiers for item 1 to item 1). This is my formula: 

ForAll(Gallery3.AllItems As yomom,ForAll(LookUp(fdcs559,fdcId=LookUp('Food Nicknames',fghfh=yomom[@Ingredient],fdcId),foodPortions[@modifier]) As hmm,Patch(units7,LookUp(units7,Value=yomom.Ingredient),{Unit2: RenameColumns(Split(Concatenate(Concat(LookUp(units7,Value = yomom[@Ingredient]).Unit2,Unit,"#"),"#",hmm.modifier),"#"),"Result","Unit")})));

Please help, thanks!

[dcreddycrm]

Hi,
I am trying to capture the current record value of the Outer ForAll in the Inner ForAll. I have tried numerous ways but no luck. 

// for single user it's perfectly working
Set(NewUserRecord,LookUp(Users, 'User Name' = cmbCopyTo.Selected.'User Name'));

Clear(copyFromUserRoles);
ForAll(LookUp(Users, 'User Name' = cmbCopyFrom.Selected.'User Name').'Security Roles (systemuserroles_association)',
Collect(copyFromUserRoles,
{
CloneRoleId: Role,
CloneRoleName: Name
})
);

ForAll(copyFromUserRoles,Relate(NewUserRecord.'Security Roles (systemuserroles_association)',
LookUp('Security Roles',
Name = CloneRoleName && businessunitid.name = NewUserRecord.'OOB Business Unit'.Name
))
);

// I need to do this for multi users

Clear(newUsers);
ForAll(cmbCopyTo.SelectedItems, Collect(newUsers,LookUp(Users, 'User Name' = cmbCopyTo.Selected.'User Name')));

Clear(copyFromUserRoles);
ForAll(LookUp(Users, 'User Name' = cmbCopyFrom.Selected.'User Name').'Security Roles (systemuserroles_association)',
Collect(copyFromUserRoles,
{
CloneRoleId: Role,
CloneRoleName: Name
})
);

// I need something like this. I want to loop through all the newUsers collection items and assign the same security roles to all those users.
ForAll(newUsers,
ForAll(Assign Security Roles to each user from the outer forall)
);

ForAll(copyFromUserRoles,Relate(NewUserRecord.'Security Roles (systemuserroles_association)',
LookUp('Security Roles',
Name = CloneRoleName && businessunitid.name = NewUserRecord.'OOB Business Unit'.Name
))
);

Could someone please help me?

Thanks,

dcr

[Anonymous]

Hi,
Maybe this will help you to find your answer :
https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/operators#thisitem-thisrecord...

ForAll() function returns each row with ThisRecord that can be used like this :
ForAll(MyCollection, Collect(ColResult:{value:ThisRecord.value}))

Nested ForAll() must use As to distinguish records with a personal name. It can be used like this :

ClearCollect(colNumbers,{value:67},{value:66},{value:65});

ClearCollect(colASCII,{letter:"A",value:65},{letter:"B",value:66},{letter:"C",value:67});

Clear(colResult);

ForAll(colNumbers As theNum,

     ForAll(Filter(colASCII,value=theNum.value) As theText,

          Collect(colResult,{result:theText.letter})

     )

)

ColResult will contains respectively : C, B, A

I hope this will help you

[Anonymous]

i m trying to loop through all the day of the week and also loop through all project and trying to insert one row for each. So for 7 days of the week and 5 project. I would need to insert 35 records , user name , date , hours and project name 

ForAll(DaysOfWeek,
ForAll(Projects,
{
// Calculate the current date and hours based on the day of the week
Set(CurrentDate, DateAdd(SelectedDate, Switch(
DaysOfWeek[Result],
"Sunday", -1,
"Monday", 0,
"Tuesday", 1,
"Wednesday", 2,
"Thursday", 3,
"Friday", 4,
"Saturday", 5
), Days)),

Set(CurrentHours, Switch(
DaysOfWeek[Result],
"Sunday", SundayHours.Text,
"Monday", MondayHours.Text,
"Tuesday", TuesdayHours.Text,
"Wednesday", WednesdayHours.Text,
"Thursday", ThursdayHours.Text,
"Friday", FridayHours.Text,
"Saturday", SaturdayHours.Text
));

// Check if a record already exists in the 'TimeTracker Report'
Set(ExistingRecord, LookUp(
'TimeTracker Report',
UserName = UserFullName && Date = CurrentDate && ProjectName = Project.Name
));

// If no record found, insert a new record; otherwise, update the existing record
If(
IsBlank(ExistingRecord),
Patch(
'TimeTracker Report',
Defaults('TimeTracker Report'),
{
Title: "Test",
UserName: UserFullName,
ProjectName: Project.Name,
Date: CurrentDate,
Hours: Value(CurrentHours)
}
),
Patch(
'TimeTracker Report',
ExistingRecord,
{
Title: "Test",
Hours: Value(CurrentHours)
}
)
)
}
)
)

Cna you please correct this query? I m gettting Forall function is having invalid argument