IBX-7276: New User / Field twig functions (#2238)

* New User / Field twig functions

* Implement review comments
---------

Co-authored-by: Adrien Dupuis <[email protected]>

Author: dabrt

docs/templating/twig_function_reference/field_twig_functions.md

@@ -20,6 +20,9 @@ You can get additional information about a Field by using the following Twig fun
 - [`ibexa_field_name()`](#ibexa_field_name) returns the name of a Content item's Field.
 - [`ibexa_field_description()`](#ibexa_field_description) returns the description of a Content item's Field.
 - [`ibexa_field_is_empty()`](#ibexa_field_is_empty) returns Boolean information whether a Field of a Content item is empty.
+- [`ibexa_field_group_name()`](#ibexa_field_group_name) returns a human-readable name of the Field group.
+- [`ibexa_has_field()`](#ibexa_has_field) checks whether a Field is present in the Content item.
+
 
 ## Field rendering
 
@@ -175,3 +178,31 @@ For example, use `ibexa_field_is_empty()` to check whether a Field is empty or f
     {{ ibexa_render_field(content, 'image') }}
 {% endif %}
 ```
+
+### `ibexa_field_group_name()`
+
+`ibexa_field_group_name()` returns a human-readable name of a Field group.
+
+| Argument | Type | Description |
+|---------------|------|-------------|
+| `fieldGroupIdentifier` | `string` | Field group [identifier](repository_configuration.md#field-groups-configuration). |
+
+
+``` html+twig
+{{ ibexa_field_group_name('content') }}
+```
+
+### `ibexa_has_field()`
+
+`ibexa_has_field()` returns Boolean information whether a Field is present in the Content item.
+
+| Argument | Type | Description |
+|---------------|------|-------------|
+| `content` | `Ibexa\Contracts\Core\Repository\Values\Content\Content` | Content item the Field may belong to. |
+| `fieldDefIdentifier` | `string` | Identifier of the Field. |
+
+``` html+twig
+{% if ibexa_has_field(content, 'existing') %}
+    {{ ibexa_render_field(content, 'existing') }}
+{% endif %}
+```

docs/templating/twig_function_reference/other_twig_filters.md

@@ -4,21 +4,6 @@ page_type: reference
 
 # Other Twig filters
 
-### `ibexa_user_get_current()`
-
-`ibexa_user_get_current()` returns the User object (`Ibexa\Contracts\Core\Repository\Values\User\User`) of the current user.
-
-``` html+twig
-{{ ibexa_user_get_current().login }}
-```
-
-You can get the underlying Content item, for example the user's name,
-by accessing the `content` property:
-
-``` html+twig
-{{ ibexa_render(ibexa_user_get_current().content) }}
-```
-
 ### `ibexa_icon_path()`
 
 `ibexa_icon_path()` generates a path to the selected icon from an icon set.

docs/templating/twig_function_reference/user_twig_functions.md

@@ -0,0 +1,38 @@
+---
+description: User Twig functions enable getting repository user information.
+page_type: reference
+---
+
+# User Twig functions
+
+### `ibexa_user_get_current()`
+
+`ibexa_user_get_current()` returns the User object (`Ibexa\Contracts\Core\Repository\Values\User\User`) of the current user.
+
+``` html+twig
+{{ ibexa_user_get_current().login }}
+```
+
+You can get the underlying Content item, for example to display the user's last name,
+by accessing the `content` property:
+
+``` html+twig
+{{ ibexa_render_field(ibexa_user_get_current().content, 'last_name') }}
+```
+
+### `ibexa_current_user()`
+
+`ibexa_current_user()` is a deprecated alias of `ibexa_user_get_current()`.
+
+
+### `ibexa_is_current_user()`
+
+The `ibexa_is_current_user()` Twig function checks whether a user is the current repository user.
+
+#### Examples
+
+```html+twig
+{% if ibexa_is_current_user(version_info.author) %}
+    <!-- Display edit link -->
+{% endif %}
+```

mkdocs.yml

@@ -274,12 +274,13 @@ nav:
             - Catalog Twig functions: templating/twig_function_reference/catalog_twig_functions.md
             - Checkout Twig functions: templating/twig_function_reference/checkout_twig_functions.md
             - Content Twig functions: templating/twig_function_reference/content_twig_functions.md
+            - Date Twig filters: templating/twig_function_reference/date_twig_filters.md
             - Field Twig functions: templating/twig_function_reference/field_twig_functions.md
+            - Image Twig functions: templating/twig_function_reference/image_twig_functions.md
             - Product Twig functions: templating/twig_function_reference/product_twig_functions.md
             - Storefront Twig functions: templating/twig_function_reference/storefront_twig_functions.md
-            - Image Twig functions: templating/twig_function_reference/image_twig_functions.md
             - URL Twig functions: templating/twig_function_reference/url_twig_functions.md
-            - Date Twig filters: templating/twig_function_reference/date_twig_filters.md
+            - User Twig functions: templating/twig_function_reference/user_twig_functions.md
             - Other Twig filters: templating/twig_function_reference/other_twig_filters.md
         - URLs and routes:
             - URLs and routes: templating/urls_and_routes/urls_and_routes.md