- Added additional method override docs

Author: dash8x

docs/advanced-usage/additional-method-overrides.md

@@ -0,0 +1,110 @@
+---
+title: Additional method overrides
+sidebar_position: 2
+---
+
+Apart from the required methods that have to be implemented, API controllers also include other methods than can be overriden. 
+
+## modifyModel()
+
+This method can be used to set additional attributes or hide specific attributes on the model before returning the results.
+
+```php
+public function modifyModel(Model $model): Model
+{
+    $model->setHidden('media');
+    
+    $model->some_random_fake_attribute = 'some value';
+
+    return $model;
+}
+```
+
+## authorizeView()
+
+Set authorization on the show endpoint.
+
+```php
+protected function authorizeView(Model $model): void
+{
+    $this->authorize('view', $model);
+}
+```
+
+## getFieldsToAlwaysInclude
+
+Specifies which fields to always include, regardless of what the user provides in the `?fields=` query parameter.
+By default this is set to return the `id` field.
+
+```php
+public function getFieldsToAlwaysInclude(): array
+{
+    return [
+        'id'
+    ];
+}
+```
+
+## getIndexAllowedFields
+
+Override this method if you want to allow different fields just for the `index` endpoint.
+
+```php
+public function getIndexAllowedFields(): array
+{
+    return $this->getAllowedFields();
+}
+```
+
+## getIndexValidation
+
+Override this method to specify any validation rules to run for the `index` endpoint.
+The default validation rules are given below.
+
+```php
+protected function getIndexValidation(): array
+{
+    return [
+        'per_page' => "integer|" . ($this->allowUnlimitedResultsPerPage() ? 'min:-1' : 'between:1,' . $this->getMaxPerPage()),
+        'page' => 'integer|min:1',
+    ];
+}
+```
+
+## getShowValidation
+
+Override this method to specify any validation rules to run for the `show` endpoint.
+The default validation rules are given below.
+
+```php
+protected function getShowValidation(): array
+{
+    return [];
+}
+```
+
+## getShowAllowedAppends
+
+Override this method if you want to specify specific `appends` just for the `show` endpoint.
+These will be merged with the `getAllowedAppends`.
+
+```php
+public function getShowAllowedAppends(): array
+{
+    return [];
+}
+```
+
+## getAllShowAllowedAppends
+
+Override this method if you want to specify specific `appends` just for the `show` endpoint without merging with the `getAllowedAppends`.
+
+```php
+public function getAllShowAllowedAppends(): array
+{
+    return [
+        'formatted_name',
+    ];
+}
+```
+