Code cleanup.

app/Models/Preference.php

@@ -2,26 +2,45 @@
 
 use Illuminate\Database\Eloquent\Model;
 
+/**
+ * Class Preference
+ *
+ * @package FireflyIII\Models
+ */
 class Preference extends Model
 {
 
     protected $fillable = ['user_id', 'data', 'name'];
 
+    /**
+     * @param $value
+     *
+     * @return mixed
+     */
     public function getDataAttribute($value)
     {
         return json_decode($value);
     }
 
+    /**
+     * @return array
+     */
     public function getDates()
     {
         return ['created_at', 'updated_at'];
     }
 
+    /**
+     * @param $value
+     */
     public function setDataAttribute($value)
     {
         $this->attributes['data'] = json_encode($value);
     }
 
+    /**
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
     public function user()
     {
         return $this->belongsTo('FireflyIII\User');