Laravel Eloquent Relationship: Many To Many Polymorphic Relations

Aktivitas.php

<?php

// app/models/Aktivitas.php

/**
 * Class Aktivitas
 */
class Aktivitas extends Eloquent {

    /**
     * set timestamps to false
     *
     * @var boolean
     */
    public $timestamps = false;

    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'aktivitas';

    /**
     * relasi dengan tabel tags
     *
     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
     */
    public function tags()
    {
        return $this->morphToMany('Tag', 'taggable', 'taggables', 'taggable_id', 'id_tag');
    }

}

DatabaseSeeder.php

<?php

// app/database/seeds/DatabaseSeeder.php

/**
 * Class DatabaseSeeder
 */
class DatabaseSeeder extends Seeder {

    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        Eloquent::unguard();

        DB::statement('SET FOREIGN_KEY_CHECKS = 0'); // disable foreign key constraints

        $this->call('TabelStatusSeeder');
        $this->call('TabelAktivitasSeeder');
        $this->call('TabelTagsSeeder');
        $this->call('TabelTaggableSeeder');

        DB::statement('SET FOREIGN_KEY_CHECKS = 1'); // enable foreign key constraints
    }

}

Status.php

<?php

// app/models/Status.php

/**
 * Class Status
 */
class Status extends Eloquent {

    /**
     * set timestamps to false
     *
     * @var boolean
     */
    public $timestamps = false;

    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'status';

    /**
     * relasi dengan tabel tags
     *
     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
     */
    public function tags()
    {
        return $this->morphToMany('Tag', 'taggable', 'taggables', 'taggable_id', 'id_tag');
    }

}

tabel_aktivitas.php

<?php

// app/database/migrations/tabel_aktivitas.php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;

/**
 * Class TabelAktivitas
 */
class TabelAktivitas extends Migration {

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('aktivitas', function (Blueprint $table)
        {
            $table->increments('id');
            $table->string('isi');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('aktivitas');
    }

}

tabel_status.php

<?php

// app/database/migrations/tabel_status.php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;

/**
 * Class TabelStatus
 */
class TabelStatus extends Migration {

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('status', function (Blueprint $table)
        {
            $table->increments('id');
            $table->string('isi');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('status');
    }

}

tabel_taggables.php

<?php

// app/database/migrations/tabel_taggables.php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;

/**
 * Class TabelTaggables
 */
class TabelTaggables extends Migration {

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('taggables', function (Blueprint $table)
        {
            $table->increments('id');
            $table->integer('id_tag')->unsigned();;
            $table->integer('taggable_id');
            $table->string('taggable_type');
            $table->foreign('id_tag')
                  ->references('id')
                  ->on('tags')
                  ->onDelete('cascade');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('taggables');
    }

}

tabel_tags.php

<?php

// app/database/migrations/tabel_tags.php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;

/**
 * Class TabelTags
 */
class TabelTags extends Migration {

    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('tags', function (Blueprint $table)
        {
            $table->increments('id');
            $table->string('nama');
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::drop('tags');
    }

}

TabelAktivitasSeeder.php

<?php

// app/database/seeds/TabelAktivitasSeeder.php

/**
 * Class TabelAktivitasSeeder
 */
class TabelAktivitasSeeder extends Seeder {

    public function run()
    {
        Aktivitas::truncate();

        Aktivitas::create([
            'isi' => 'Isi aktivitas.'
        ]);
    }

}

TabelStatusSeeder.php

<?php

// app/database/seeds/TabelStatusSeeder.php

/**
 * Class TabelStatusSeeder
 */
class TabelStatusSeeder extends Seeder {

    public function run()
    {
        Status::truncate();

        Status::create([
            'isi' => 'Isi status.'
        ]);
    }

}

TabelTaggableSeeder.php

<?php

// app/database/seeds/TabelTaggableSeeder.php

/**
 * Class TabelTaggableSeeder
 */
class TabelTaggableSeeder extends Seeder {

    public function run()
    {
        Taggable::truncate();

        Taggable::create([
            'id_tag'        => 1,
            'taggable_id'   => 1,
            'taggable_type' => 'Status'
        ]);

        Taggable::create([
            'id_tag'        => 1,
            'taggable_id'   => 1,
            'taggable_type' => 'Aktivitas'
        ]);

        Taggable::create([
            'id_tag'        => 2,
            'taggable_id'   => 1,
            'taggable_type' => 'Aktivitas'
        ]);
    }

}

TabelTagsSeeder.php

<?php

// app/database/seeds/TabelTagsSeeder.php

/**
 * Class TabelTagsSeeder
 */
class TabelTagsSeeder extends Seeder {

    public function run()
    {
        Tag::truncate();

        Tag::create([
            'nama' => 'Tag A.'
        ]);

        Tag::create([
            'nama' => 'Tag B.'
        ]);
    }

}

Tag.php

<?php

// app/models/Tag.php

/**
 * Class Tag
 */
class Tag extends Eloquent {

    /**
     * set timestamps to false
     *
     * @var boolean
     */
    public $timestamps = false;

    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'tags';

    /**
     * relasi dengan tabel status
     *
     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
     */
    public function status()
    {
        return $this->morphedByMany('Status', 'taggable', 'taggables', 'taggable_id', 'id_tag');
    }

    /**
     * relasi dengan tabel aktivitas
     *
     * @return \Illuminate\Database\Eloquent\Relations\MorphToMany
     */
    public function aktivitas()
    {
        return $this->morphedByMany('Aktivitas', 'taggable', 'taggables', 'taggable_id', 'id_tag');
    }

}

Taggable.php

<?php

// app/models/Taggable.php

/**
 * Class Taggable
 */
class Taggable extends Eloquent {

    /**
     * set timestamps to false
     *
     * @var boolean
     */
    public $timestamps = false;

    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'taggables';

}