codigo actual del servidor, con avances de joan

app/Models/Attribute.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use App;
+
+class Attribute extends Model
+{
+    protected $with = ['attribute_translations'];
+
+    public function getTranslation($field = '', $lang = false){
+      $lang = $lang == false ? App::getLocale() : $lang;
+      $attribute_translation = $this->attribute_translations->where('lang', $lang)->first();
+      return $attribute_translation != null ? $attribute_translation->$field : $this->$field;
+    }
+
+    public function attribute_translations(){
+      return $this->hasMany(AttributeTranslation::class);
+    }
+
+    public function attribute_values() {
+        return $this->hasMany(AttributeValue::class);
+    }
+
+}