Need to create a task for one contact whenever a Portal user logs into portal

Question

A task has to be created automatically whenever a certain profile user logs into Portal and it should assign to one user X. The Portal is designed on lightning. I have created a class where I can get data based on Login time, but I am not able to get any task for that user(I used System Admin User for testing)

public without sharing class taskController {    
      @AuraEnabled
      public static string create_task(){

        LoginHistory tsk = [SELECT Id,UserId 
                            FROM LoginHistory 
                            WHERE UserId=:userinfo.getUserId()
                            ORDER BY LoginTime desc limit 1];

        User sys_adm = [SELECT id, Email FROM User WHERE Name = 'my name']; // this is id of user who recieves task    

        Integer TaskCount = [SELECT count()
                            FROM Task
                            WHERE userLoginId__c =:tsk.id]; // used this coz whenever a user logs in it generates multiple times

        Task task = new Task();
        if(TaskCount == 0){
          User portalUser = [SELECT Id, Username, ContactId, Contact.Name, Contact.AccountId, Contact.Account.Name, Contact.Account.Email__c
                             FROM User
                             WHERE Id =:UserInfo.getUserId()]; //this is the portal user login query
          task.Subject =  portalUser.Contact.Name + 'from ' + portalUser.Contact.Account.Name + 'has logged into the portal';
          task.Description = portalUser.Contact.Name + 'from ' + portalUser.Contact.Account.Name + 'has logged into the portal at' + DateTime.now()+ '. Account e-mail: '+ portalUser.Contact.Account.Email__c; 
          task.OwnerId = sys_adm.Id;//task owner
          task.WhatId = portalUser.Contact.AccountId;  //portal login user
          task.ActivityDate = Date.Today();
          insert task;      
        } 
        return task.id;
    }    
}

I have tried to login to Portal but it did not generate any task on my User.

Answer 1

You'll need a custom login page for your community. That should allow you to react as soon as a user has authenticated.

• Redirect users to a custom auth-page
• Setting up a custom auth-page

Once you accomplish the above, your method that returns a page reference should return a page inside your community (success) or an error page/null (failure). If the page reference is a good page, you can write code to create the task prior to re-directing the user.

public PageReference login() {
    String startUrl = System.currentPageReference().getParameters().get('startURL');
    PageReference loginResult = Site.login(username, password, startUrl);

    if (loginResult.getUrl() == startUrl) {
        taskController.create_task();
    }

    return loginResult;
}

At least, that's the theory, I haven't needed to do this before so i haven't put it to the test. You'll have to be cautious with permissions as well, they can get tricky in communities.