Verify if User() exist in the SP list

[shaggy]

Hello everybody!

I want to verify if current user occur in the SP list. I tried some ideas but without positive results.

If(LookUp(List; User().FullName in Person.DisplayName; Person.DisplayName) = User().FullName; Navigate(Screen; Fade); Set(Incorrect;"You are not member!"))

Also I tried to use CurrentUser method but it doesn't working also. 

Thank a lot for Yours answers!

[WarrenBelz]

Hi @shaggy ,

Firstly, you will have a delegation issue with User()>FullName. The workaround is to set a Variable

Set(vUser,User().FullName)

There is also a delegation issue with In - so try this:

If(
   !isBlank(
      LookUp(
         List, 
         vUser = Person.DisplayName
      ),
      Person.DisplayName
   ),
   Navigate(Screen,Fade), 
   Set(Incorrect,"You are not member!")
)

Pardon the commas - semi-colons mean a new command for me.

If this post helps, then please consider Accept it as the solution to help the other members find it more. It also closes the item.

[kbilakanti]

@shaggy  If(LookUp(List, <FieldName in list>= User().FullName),true,"Error")

[shaggy]

@WarrenBelz 

It doesn't work, there is error ( red marks)

If(!IsBlank(LookUp(List; vUser = Person.DisplayName); Person.DisplayName);Navigate(Screen; Fade); Set(Incorrect;"You are not member!"))

= -> incorrect type of argument

Person.DisplayName -> also here is something wrong

[shaggy]

@kbilakanti 

Unfortunately is also doesn't work

[WarrenBelz]

Hi @shaggy ,

I was trying to give you some guidance on a process using the field names you supplied (which is the bit not working). What I was pointing out is the delegation issues with In and User().FullName. Can you please give me

• The name of the list containing the user’s name
• The field name in the list containing the name.

As an example, if the list name is Person and the field name is DisplayName then

If(
   !isBlank(
      LookUp(
         Person, 
         vUser = DisplayName
      ),
      DisplayName
   ),
   Navigate(Screen,Fade), 
   Set(Incorrect,"You are not member!")
)

should work after you set the Variable vUser to User().FullName

[eka24]

Please what is the name of your table (Is it SPList) and what is the name of your Column/Field that holds your user names in your database. Being Clear on this will help

[shaggy]

@WarrenBelzand @kbilakanti 

List name : Members

Ther is just one column called "Person" and set as "Person or Group"

[eka24 · Accepted solution]

If(CountRows(Filter(Members,Person = User().FullName)) > 0, Navigate(Screen, Fade), Notify("You are not member!"))

Please change the Screen to your screen name

[WarrenBelz]

Hi @shaggy,

Thanks for clarifying that. In my last post I catered for a text field assuming the previous one did not work for this reason.

OK - I do not use this field type myself, however I assume that it is no different from any other complex field type with a table structure.

I will try another approach assuming you have less than 2000 items in Members.

ClearCollect(
   colMembers,
   Members
);   //put it all in a collection

If(
   User().FullName in colMember.Person,
   Navigate(Screen,Fade),
   Set(
      Incorrect,"You are not member"
   ),
)

There are no delegation issues querying a collection, so you can go back to the old operators.

If this post helps, then please consider Accept it as the solution to help the other members find it more. It also closes the item.