Displaying total answer and correct answer of each user - php

Question

I have a db structure like this:
Tables:
users(id, email, password, ...) //default laravel users table
examinees(id, user_id, ...)
exam_quizzes(id, title, explanation)
exam_quiz_answers(id, title, exam_quiz_id, is_correct_ans)
submitted_answers(id, user_id, exam_quiz_id, exam_quiz_answer_id)
I already have the respective models and relationship methods set up.
Models:
User, Examinee, ExamQuiz, ExamQuizAnswer, SubmittedAnswer
Relationships:
// User -> hasOne() -> Examinee
$user->examinee
// ExamQuiz -> hasMany() -> ExamQuizAnswer
$examQuiz->examQuizAnswers
// SubmittedAnswer -> hasMany() -> ExamQuiz
$submittedAnswer->examQuizzes
// SubmittedAnswer -> hasMany() -> ExamQuizAnswer
$submittedAnswer->examQuizAnswers
// User -> hasMany() -> SubmittedAnswer
$user->submittedAnswers
In my view, how can I display the Name, Total Answered and Total Correct for every user who is also an examinee, in a table like this:
<tr>
<th>Name</th>
<th>Answered</th>
<th>Correct</th>
</tr>
#foreach()
{{-- I have no idea what to do here --}}
<tr>
<td></td>
<td></td>
<td></td>
</tr>
#endforeach

Answer 1

In your controller, u get the users an pass it to view.
$users = User:get();
and the make a foreach loop to get the answer and correct answers:
<tr>
<th>Name</th>
<th>Answered</th>
<th>Correct</th>
</tr>
#foreach($users as $user)
<tr>
<td>{{$user->name}}</td>
<td>{{count($user->submittedAnswers()->get())}}</td>
#php
foreach($user->submittedAnswers()->get() as $answer){
foreach($answer->examQuizAnswers->get() as $quiz){
$count = $quiz->where('is_correct_answer',1)->count()
}
}
#endphp
<td>{{$count}}</td>
</tr>
#endforeach
But of course you can write a method in a model to retrieve the correct answers. and just call that method instead.
you can write a method like this in User model:
public function get_correct_answers($user_id){
$user = User::whereId($user_id)->first();
foreach($user->submittedAnswers()->get() as $answer){
foreach($answer->examQuizAnswers->get() as $quiz){
$count = $quiz->where('is_correct_answer',1)->count()
}
}
return $count;
}
And then in the view u just call that method like this:
<tr>
<th>Name</th>
<th>Answered</th>
<th>Correct</th>
</tr>
#foreach($users as $user)
<tr>
<td>{{$user->name}}</td>
<td>{{count($user->submittedAnswers()->get())}}</td>
<td>{{$user->get_correct_answers($user->id)}}</td>
</tr>
#endforeach

Answer 2

Loop your $users and echo the 3 fields you want. Something roughly like this:
{{ $user->name }}
{{ $user->submittedAnswers->examQuizAnswers()->where('is_correct_answer', 1)->get()->count() }}
{{ $user->submittedAnswers->examQuizAnswers->count() }}
But please don't actually query in view files for the sake of the children.
Eager load related models in your controller:
User::with(['submitted_answers', 'submitted_answers.exam_quiz_answers'])->get()