Eloquent relation query returning null value - php

Question

I am trying to get some relational data. All the methods work well but only one method is not working. I am trying to call App\ModeltestMcqQuestion::find(id)->chapterwiseMcqs from tinker, but it is returning null. My database is well populated. I have tried with many id, but nothing is working.
My Models are:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
class ChapterwiseMcq extends Model
{
use SoftDeletes;
protected $fillable = [
'topic_id',
'question_type',
'question',
'question_description',
'question_resource',
'a',
'b',
'c',
'd',
'answer',
'answer_description',
'answer_resource',
];
public function topic(){
return $this->belongsTo(Topic::class);
}
public function modeltestMcqAnswers(){
return $this->hasMany(ModeltestMcqAnswer::class);
}
public function modeltestMcqQuestions(){
return $this->hasMany(ModeltestMcqQuestion::class);
}
}
Another Model:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;
class ModeltestMcqQuestion extends Model
{
use SoftDeletes;
protected $fillable = [
'modeltest_question_set_id',
'chapterwise_mcq_id',
];
public function modeltestQuestionSet(){
return $this->belongsTo(ModeltestQuestionSet::class);
}
public function chapterwiseMcqs(){
return $this->belongsTo(ChapterwiseMcq::class);
}
}
Migrations:
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class CreateChapterwiseMCQSTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('chapterwise_mcqs', function (Blueprint $table) {
$table->id();
$table->foreignId('topic_id')->constrained()->onDelete('cascade')->onUpdate('cascade');
$table->integer('question_type');
$table->string('question');
$table->text('question_description')->nullable();
$table->string('question_resource')->nullable();
$table->string('a');
$table->string('b');
$table->string('c');
$table->string('d');
$table->string('answer');
$table->text('answer_description')->nullable();
$table->string('answer_resource')->nullable();
$table->timestamps();
$table->softDeletes();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::dropIfExists('chapterwise_m_c_q_s');
}
}
Another migration:
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
class CreateModeltestMcqQuestionsTable extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('modeltest_mcq_questions', function (Blueprint $table) {
$table->id();
$table->foreignId('modeltest_question_set_id')->constrained()->onUpdate('cascade')->onDelete('cascade');
$table->foreignId('chapterwise_mcq_id')->constrained()->onUpdate('cascade')->onDelete('cascade');
$table->timestamps();
$table->softDeletes();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::dropIfExists('modeltest_mcq_questions');
}
}
All the relational queries work well except App\ModeltestMcqQuestion::find(id)->chapterwiseMcqs. Can anyone help me what is wrong with the code? Here, id represents id of the model.

Answer 1

I have found a solution. Defining the funtion name caused the problem, I think.
public function chapterwiseMcqs()
Thu function name should be chapterwiseMcq(), not chapterwiseMcqs(). Changing the name worked for me.