Profile permission to access buttons

Question

Currently I have this code on VFP

<apex:commandButton value="Edit" action="{!Edit}" 
   rendered="{!(($Profile.Name =='System Administrator'||$Profile.Name =='Sales Manager'))}"  />

But I want to move away from VFP to APEX code instead.

How can I translate what I have in VFP to APEX code?

I have tried something like this:

//get the user id:
string u = Userinfo.getUserId(); 
//profile
list<profile> profile = [select id,name from profile where id  =:u limit 1];
system.debug('///'+profile); //get the empty

Answer 1

You are querying the wrong table with the UserInfo data. UserInfo.getUserId gets you a User Id, so Query the User table instead of Profile table. From there you can fetch the profile name.

//get the user id:
string u = Userinfo.getUserId(); 
//profile
list<User> users = [select id,name, profile.Name from User where id  =:u limit 1];
system.debug('///'+users); 

By the way: I'd recommend using a hierarchy custom setting for functionality like this. That way you can maintain the set of profiles without changes to the code.

Answer 2

You're querying the profile with the ID of the user, which will never work.

You can get the ProfileID by using UserInfo.getProfileID();

Answer 3

You can query on User record to fetch the profile name of a logged in User.

List<User> userList = [Select Id, Name, ProfileId, Profile.Name from User where Id=: UserInfo.getUserId() limit 1];

System.debug('##'+userList[0].Profile.Name);