first upload all files

Modules/Option/Database/Factories/ModelFactory.php

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+<?php
+
+use Faker\Generator as Faker;
+use Modules\Option\Entities\Option;
+use Modules\Option\Entities\OptionValue;
+
+$factory->define(OptionValue::class, function (Faker $faker) {
+    return [
+        'option_id' => function () {
+            return factory(Option::class)->create()->id;
+        },
+        'name' => $faker->word(),
+        'price' => $faker->randomNumber(),
+        'price_type' => $faker->randomElement(['fixed', 'percent']),
+    ];
+});
+
+$factory->define(Option::class, function (Faker $faker) {
+    return [
+        'name' => $faker->word(),
+        'type' => $faker->randomElement(['field', 'dropdown']),
+        'is_required' => $faker->boolean(),
+    ];
+});

Modules/Option/Database/Migrations/2017_08_02_153217_create_options_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateOptionsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('options', function (Blueprint $table) {
+            $table->increments('id');
+            $table->string('type');
+            $table->boolean('is_required');
+            $table->boolean('is_global')->default(true);
+            $table->integer('position')->unsigned()->nullable();
+            $table->softDeletes();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('options');
+    }
+}

Modules/Option/Database/Migrations/2017_08_02_153348_create_option_translations_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateOptionTranslationsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('option_translations', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('option_id')->unsigned();
+            $table->string('locale');
+            $table->string('name');
+
+            $table->unique(['option_id', 'locale']);
+            $table->foreign('option_id')->references('id')->on('options')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('option_translations');
+    }
+}

Modules/Option/Database/Migrations/2017_08_02_153406_create_option_values_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateOptionValuesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('option_values', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('option_id')->unsigned()->index();
+            $table->decimal('price', 18, 4)->unsigned()->nullable();
+            $table->string('price_type', 10);
+            $table->integer('position')->unsigned();
+            $table->timestamps();
+
+            $table->foreign('option_id')->references('id')->on('options')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('option_values');
+    }
+}

Modules/Option/Database/Migrations/2017_08_02_153736_create_option_value_translations_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateOptionValueTranslationsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('option_value_translations', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('option_value_id')->unsigned();
+            $table->string('locale');
+            $table->string('label');
+
+            $table->unique(['option_value_id', 'locale']);
+            $table->foreign('option_value_id')->references('id')->on('option_values')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('option_value_translations');
+    }
+}

Modules/Option/Database/Migrations/2017_08_03_156576_create_product_options_table.php

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+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreateProductOptionsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('product_options', function (Blueprint $table) {
+            $table->integer('product_id')->unsigned();
+            $table->integer('option_id')->unsigned();
+
+            $table->primary(['product_id', 'option_id']);
+            $table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
+            $table->foreign('option_id')->references('id')->on('options')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('product_options');
+    }
+}

Modules/Option/Database/Seeders/OptionDatabaseSeeder.php

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+<?php
+
+namespace Modules\Option\Database\Seeders;
+
+use Illuminate\Database\Seeder;
+use Modules\Option\Entities\Option;
+use Modules\Option\Entities\OptionValue;
+
+class OptionDatabaseSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     *
+     * @return void
+     */
+    public function run()
+    {
+        factory(Option::class, 10)
+            ->create()
+            ->each(function ($option) {
+                $times = $option->type === 'dropdown' ? 5 : 1;
+
+                factory(OptionValue::class, $times)->create(['option_id' => $option->id]);
+            });
+    }
+}