Docs

README.md

@@ -280,6 +280,20 @@ If you want a select element where multiple options can be selected, add the `mu
 <x-form-select name="country_code" :options="$countries" multiple :default="['be', 'nl']" />
 ```
 
+#### Using Eloquent relationships
+
+This package has built-in support for `BelongsToMany`, `MorphMany` and `MorphToMany` relationships. To leverage this feature, you must add both the `multiple` and `many-relation` attribute to the select element.
+
+In the example below, you can attach one or more tags to the bound video. By using the `many-relation` attribute, it will correctly retrieve the selected options from the database.
+
+```blade
+<x-form>
+    @bind($video)
+        <x-form-select name="tags" :options="$tags" multiple many-relation />
+    @endbind
+</x-form>
+```
+
 ### Checkbox elements
 
 Checkboxes have a default value of `1`, but you can customize it as well.

src/Components/FormSelect.php

@@ -59,10 +59,6 @@ public function isSelected($key): bool
             return false;
         }
 
-        $haystack = $this->selectedKey instanceof Arrayable
-            ? $this->selectedKey->toArray()
-            : $this->selectedKey;
-
-        return in_array($key, Arr::wrap($haystack));
+        return in_array($key, Arr::wrap($this->selectedKey));
     }
 }