# Panel Content Screen Hooks
https://dev.wisecp.com/es/admin-content-screen-hooks
The twenty-two placement points of the content, message, notification and language screens: forms, lists and toolbars.
## Overview
The placement points of the site content, contact messages, notification templates and languages live here.
One thing runs through the content screens: **the same screen serves several types**. Pages, contracts, news, articles and references share one form; the message list serves five folders. Check the type if what you add should not appear on all of them.
## Reference
### After the page title
uiadmin.content.page_title.after
`admin/manage-website` on many pages
Appears after the title on the content management pages. The controller name tells you which page you are on.
Parameters 1
$controllerstringThe name of the active controller. The hook runs on several pages: without a check your output appears on all of them.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.content.page_title.after', 10, function ($controller) {
// Kanca birden cok sayfada calisir.
if ($controller !== 'pages') return null;
return 'Acme';
});
```
### Above the content form
uiadmin.content_edit.before_content
`admin/manage-website` five content types
Appears above the content edit form.
Parameters 2
$page_typestringThe content type: page, contract, news, article or reference. The same screen serves five types: check this if what you add should not appear on all of them.
$detailarrayThe content record being edited. It is **empty when creating**.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.content_edit.before_content', 10, function () {
return 'Acme
';
});
```
### Below the content form
uiadmin.content_edit.bottom
`admin/manage-website` five content types
Appears below the same form. The place to add a metadata field of your own.
Parameters 2
$page_typestringThe content type: page, contract, news, article or reference. The same screen serves five types: check this if what you add should not appear on all of them.
$detailarrayThe content record being edited. It is **empty when creating**.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.content_edit.bottom', 10, function () {
return 'Acme
';
});
```
### The content list toolbar
uiadmin.content_list.toolbar
`admin/manage-website` the screen links
Appears in the toolbar of the content list. The links of the screen itself are in your hands too.
Parameters 2
$page_typestringThe content type: page, contract, news, article or reference. The same screen serves five types: check this if what you add should not appear on all of them.
$linksarrayThe links of the screen: controller, add, categories and contracts.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.content_list.toolbar', 10, function () {
return 'Acme
';
});
```
### Above the table on the content list
uiadmin.content_list.before_table
`admin/manage-website` above the table
Appears immediately above the content table.
Parameters 1
$page_typestringThe content type: page, contract, news, article or reference. The same screen serves five types: check this if what you add should not appear on all of them.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.content_list.before_table', 10, function () {
return 'Acme
';
});
```
### The bottom of the content category form
uiadmin.content_category_edit.bottom
`admin/manage-website` two category types
Appears below the form of the blog and reference categories.
Parameters 2
$category_typestringThe category type: article or reference.
$detailarrayThe category being edited. It is **empty when creating**.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.content_category_edit.bottom', 10, function () {
return 'Acme
';
});
```
### The bottom of the slide form
uiadmin.slide_edit.bottom
`admin/manage-website` empty when creating
Appears below the home page slide form.
Parameters 1
$detailarrayThe slide being edited. It is **empty when creating**.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.slide_edit.bottom', 10, function () {
return 'Acme
';
});
```
### The message action area
uiadmin.messages_detail.actions
`admin/manage-website/messages` no parameters
Appears in the action area of a contact message.
Parameters 0
—It takes no parameters.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.messages_detail.actions', 10, function () {
return 'Acme
';
});
```
### The message toolbar
uiadmin.messages_detail.message.toolbar
`admin/manage-website/messages` no parameters
Appears in the toolbar of the message itself.
Parameters 0
—It takes no parameters.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.messages_detail.message.toolbar', 10, function () {
return 'Acme
';
});
```
### The message reply form toolbar
uiadmin.messages_detail.reply_form.toolbar
`admin/manage-website/messages` no parameters
Appears in the toolbar of the reply form.
Parameters 0
—It takes no parameters.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.messages_detail.reply_form.toolbar', 10, function () {
return 'Acme
';
});
```
### Below the message editor
uiadmin.messages_detail.reply_editor.after
`admin/manage-website/messages` no parameters
Appears immediately below the reply editor.
Parameters 0
—It takes no parameters.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.messages_detail.reply_editor.after', 10, function () {
return 'Acme
';
});
```
### The message list toolbar
uiadmin.messages_list.toolbar
`admin/manage-website/messages` the folder arrives
Appears in the toolbar of the contact message list.
Parameters 1
$folderstringThe open folder: unread, read, replied, spam or trash. The same toolbar serves all five folders.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.messages_list.toolbar', 10, function () {
return 'Acme
';
});
```
### The notification template list toolbar
uiadmin.notification_list.toolbar
`admin/notifications` grouped template list
Appears in the toolbar of the notification template list.
Parameters 1
$templatesarrayEvery template group, each carrying its name and items. It is not a flat list but a **two-level** structure: walk the groups and look inside.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.notification_list.toolbar', 10, function () {
return 'Acme
';
});
```
### Above the table on the template list
uiadmin.notification_list.before_table
`admin/notifications` grouped template list
Appears immediately above the template table.
Parameters 1
$templatesarrayEvery template group, each carrying its name and items. It is not a flat list but a **two-level** structure: walk the groups and look inside.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.notification_list.before_table', 10, function () {
return 'Acme
';
});
```
### The bottom of the template list
uiadmin.notification_list.bottom
`admin/notifications` grouped template list
Appears at the very bottom of the template list.
Parameters 1
$templatesarrayEvery template group, each carrying its name and items. It is not a flat list but a **two-level** structure: walk the groups and look inside.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.notification_list.bottom', 10, function () {
return 'Acme
';
});
```
### Above the template form
uiadmin.notification_edit.before_content
`admin/notifications` group and key
Appears above the notification template edit form.
Parameters 3
$nTemplatearrayThe template being edited: its status, language contents and recipient settings.
$nGroupstringThe group of the template.
$nKeystringThe key of the template. Test the group and the key together to recognise your own template.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.notification_edit.before_content', 10, function () {
return 'Acme
';
});
```
### Below the template form
uiadmin.notification_edit.bottom
`admin/notifications` group and key
Appears below the same form. The place to show a list of your own variables.
Parameters 3
$nTemplatearrayThe template being edited: its status, language contents and recipient settings.
$nGroupstringThe group of the template.
$nKeystringThe key of the template. Test the group and the key together to recognise your own template.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.notification_edit.bottom', 10, function () {
return 'Acme
';
});
```
### Above the notification settings form
uiadmin.notification_settings.before_form
`admin/notifications` the shared shell code
Appears above the notification shell settings.
Parameters 1
$settingsarrayThe current settings: per-language header, body and footer code, and the logo paths. That code is the shell of **every** notification: a change here reaches every message sent.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.notification_settings.before_form', 10, function () {
return 'Acme
';
});
```
### The language list toolbar
uiadmin.language_list.toolbar
`admin/languages` no parameters
Appears in the toolbar of the language list.
Parameters 0
—It takes no parameters.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.language_list.toolbar', 10, function () {
return 'Acme
';
});
```
### Above the table on the language list
uiadmin.language_list.before_table
`admin/languages` no parameters
Appears immediately above the language table.
Parameters 0
—It takes no parameters.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.language_list.before_table', 10, function () {
return 'Acme
';
});
```
### Above the language form
uiadmin.language_edit.before_content
`admin/languages` empty when creating
Appears above the language add and edit form.
Parameters 1
$detailarrayThe language being edited: its name, status, whether it is local, and its writing direction. It is **empty when creating**.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.language_edit.before_content', 10, function () {
return 'Acme
';
});
```
### Below the language form
uiadmin.language_edit.bottom
`admin/languages` empty when creating
Appears below the same form.
Parameters 1
$detailarrayThe language being edited: its name, status, whether it is local, and its writing direction. It is **empty when creating**.
Return 1
string|nullThe **HTML you return appears**. With several listeners the outputs are appended one after another in priority order. Empty text, `null` and `false` are skipped, so return `null` when you have nothing to add. The output enters the page unescaped — clean anything coming from outside yourself.
Listener PHP
```php
Hook::add('ui:admin.language_edit.bottom', 10, function () {
return 'Acme
';
});
```
## Pitfalls
> **One screen serves many types**
>
> The content form serves five separate types, the message list five folders, and the page title point many controllers. A listener that outputs without checking the type shows a **blog field** to an administrator editing a contract.
> **The template list has two levels**
>
> The list at the notification template points is not flat: first come the **groups**, then the items of each group. A listener walking it as one level never sees the items at all.
## Related Articles
- [Notification Hooks](https://dev.wisecp.com/en/notification-hooks)
- [Language and Translation Hooks](https://dev.wisecp.com/en/language-and-translation-hooks)
- [Management Panel Hooks](https://dev.wisecp.com/en/hooks-in-the-management-panel)