Add linkPickerParameterQuery to customize the parameter query (#23)

docs/index.md

@@ -227,3 +227,25 @@ This package comes with a helper function called `lroute()`, with it you can rea
 ```
 
 If you have enabled the route to open in a new tab, the helper will automatically add the `target="_blank"` attribute to the link as well.
+
+## Customizing the route parameters list
+
+### Title field
+
+We will show the `id` in the linkpicker dropdown when choosing a model for a parameter. 
+But this can be customized in your model, via the static property `$linkPickerTitleField`
+
+```php
+public static $linkPickerTitleField = 'working_title';
+```
+
+### Customizing parameter query
+
+We will show all models in the parameter select, but this can be customized by adding a static method `linkPickerParameterQuery` on the model.
+
+```php
+public static function linkPickerParameterQuery($query): void
+{
+    $query->where('is_published', true);
+}
+```

src/Filament/LinkPickerInput.php

@@ -190,10 +190,13 @@ private function getFormSchemaForRoute(?string $selectedRoute): Collection
                         ->label(Str::title($parameter->name))
                         ->required(! $parameter->allowsNull())
                         ->searchable()
-                        ->options($model::withoutGlobalScopes()->pluck(
-                            $model::$linkPickerTitleField ?? 'id',
-                            (new $model)->getKeyName(),
-                        ));
+                        ->options($model::query()
+                            ->when(method_exists($model, 'linkPickerParameterQuery'), fn ($query) => $model::linkPickerParameterQuery($query))
+                            ->pluck(
+                                $model::$linkPickerTitleField ?? 'id',
+                                (new $model)->getKeyName(),
+                            )
+                        );
                 });
         }