Add relations in tables, add saving states for datatables, minor fixes

app/Models/Shop/Article.php

@@ -40,11 +40,6 @@ class Article extends Model implements HasMedia
         return $this->hasOne('App\Models\Core\Media', 'model_id')->where('model_type', 'App\Models\Shop\Article');
     }
 
-    public function inventories()
-    {
-        return $this->hasMany('App\Models\Shop\Inventory');
-    }
-
     public function invoiceItems()
     {
         return $this->hasMany('App\Models\Shop\InvoiceItem');
@@ -60,6 +55,11 @@ class Article extends Model implements HasMedia
         return $this->morphTo();
     }
 
+    public function tags()
+    {
+        return $this->morphToMany('App\Models\Shop\Tag', 'taggable');
+    }
+
     public function scopeByArticle($query, $id)
     {
         return $query->where($this->table . '.id', $id);

app/Models/Shop/Tag.php

@@ -8,7 +8,29 @@ class Tag extends Model
 {
     
     protected $guarded = ['id'];
-    public $translatable = ['name']; 
+    public $translatable = ['name'];
+
+    /*
+    public function taggable()
+    {
+        return $this->hasMany('App\Models\Shop\Taggable');
+    }
+    */
+
+    public function articles()
+    {
+        return $this->morphedByMany('App\Models\Shop\Article','taggable');
+    }
+
+    public function varieties()
+    {
+        return $this->morphedByMany('App\Models\Botanic\Variety','taggable');
+    }
+
+    public function species()
+    {
+        return $this->morphedByMany('App\Models\Botanic\Specie','taggable');
+    }
 
     public function group()
     {

app/Models/Shop/Taggable.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Models\Shop;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Taggable extends Model
+{
+    
+    protected $guarded = ['id'];
+
+    public function taggable()
+    {
+        return $this->morphTo();
+    }
+
+}