fixes

app/Models/Botanic/Specie.php

@@ -47,4 +47,18 @@ class Specie extends Model implements HasMedia
     {
         return $query->where($this->table.'.name', $name);
     }
+
+    public function scopeByTag($query, $tagId)
+    {
+        return $tagId ? $query->whereHas('tags', function ($query) use ($tagId) {
+            $query->byId($tagId);
+        }) : $query;
+    }
+
+    public function scopeByTags($query, $tags)
+    {
+        return $tags ? $query->whereHas('tags', function ($query) use ($tags) {
+            $query->byIds($tags);
+        }) : $query;
+    }
 }