laravel-admin/docs/en/model-form-field-management.md
2022-09-21 11:59:53 +08:00

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# Fields management
## Remove field
The built-in `map` and `editor` fields requires the front-end files via cdn, and if there are problems with the network, they can be removed in the following ways
Locate the file `app/Admin/bootstrap.php`. If the file does not exist, update `laravel-admin` and create this file.
```php
<?php
use Encore\Admin\Form;
Form::forget('map');
Form::forget('editor');
// or
Form::forget(['map', 'editor']);
```
This removes the two fields, which can be used to remove the other fields.
## Extend the custom field
Extend a PHP code editor based on [codemirror](http://codemirror.net/index.html) with the following steps.
see [PHP mode](http://codemirror.net/mode/php/).
Download and unzip the [codemirror](http://codemirror.net/codemirror.zip) library to the front-end resource directory, for example, in the directory `public/packages/codemirror-5.20.2`.
Create a new field class `app/Admin/Extensions/PHPEditor.php`:
```php
<?php
namespace App\Admin\Extensions;
use Encore\Admin\Form\Field;
class PHPEditor extends Field
{
protected $view = 'admin.php-editor';
protected static $css = [
'/packages/codemirror-5.20.2/lib/codemirror.css',
];
protected static $js = [
'/packages/codemirror-5.20.2/lib/codemirror.js',
'/packages/codemirror-5.20.2/addon/edit/matchbrackets.js',
'/packages/codemirror-5.20.2/mode/htmlmixed/htmlmixed.js',
'/packages/codemirror-5.20.2/mode/xml/xml.js',
'/packages/codemirror-5.20.2/mode/javascript/javascript.js',
'/packages/codemirror-5.20.2/mode/css/css.js',
'/packages/codemirror-5.20.2/mode/clike/clike.js',
'/packages/codemirror-5.20.2/mode/php/php.js',
];
public function render()
{
$this->script = <<<EOT
CodeMirror.fromTextArea(document.getElementById("{$this->id}"), {
lineNumbers: true,
mode: "text/x-php",
extraKeys: {
"Tab": function(cm){
cm.replaceSelection(" " , "end");
}
}
});
EOT;
return parent::render();
}
}
```
>Static resources in the class can also be imported from outside, see [Editor.php](https://github.com/z-song/laravel-admin/blob/1.3/src/Form/Field/Editor.php)
Create a view file `resources/views/admin/php-editor.blade.php`:
```php
<div class="form-group {!! !$errors->has($label) ?: 'has-error' !!}">
<label for="{{$id}}" class="col-sm-2 control-label">{{$label}}</label>
<div class="col-sm-6">
@include('admin::form.error')
<textarea class="form-control" id="{{$id}}" name="{{$name}}" placeholder="{{ trans('admin::lang.input') }} {{$label}}" {!! $attributes !!} >{{ old($column, $value) }}</textarea>
</div>
</div>
```
Finally, find the file `app/Admin/bootstrap.php`, if the file does not exist, update `laravel-admin`, and then create this file, add the following code:
```
<?php
use App\Admin\Extensions\PHPEditor;
use Encore\Admin\Form;
Form::extend('php', PHPEditor::class);
```
And then you can use PHP editor in [model-form](/en/model-form.md):
```
$form->php('code');
```
In this way, you can add any form fields you want to add.
## Integrate CKEditor
Here is another example to show you how to integrate ckeditor.
At first download [CKEditor](http://ckeditor.com/download), unzip to public directory, for example `public/packages/ckeditor/`.
Then Write Extension class `app/Admin/Extensions/Form/CKEditor.php`:
```php
<?php
namespace App\Admin\Extensions\Form;
use Encore\Admin\Form\Field;
class CKEditor extends Field
{
public static $js = [
'/packages/ckeditor/ckeditor.js',
'/packages/ckeditor/adapters/jquery.js',
];
protected $view = 'admin.ckeditor';
public function render()
{
$this->script = "$('textarea.{$this->getElementClass()}').ckeditor();";
return parent::render();
}
}
```
Add blade file `resources/views/admin/ckeditor.blade.php` for view `admin.ckeditor` :
```php
<div class="form-group {!! !$errors->has($errorKey) ?: 'has-error' !!}">
<label for="{{$id}}" class="col-sm-2 control-label">{{$label}}</label>
<div class="col-sm-6">
@include('admin::form.error')
<textarea class="form-control {{$class}}" id="{{$id}}" name="{{$name}}" placeholder="{{ $placeholder }}" {!! $attributes !!} >{{ old($column, $value) }}</textarea>
@include('admin::form.help-block')
</div>
</div>
```
Register this extension in `app/Admin/bootstrap.php`:
```php
use Encore\Admin\Form;
use App\Admin\Extensions\Form\CKEditor;
Form::extend('ckeditor', CKEditor::class);
```
After this you can use ckeditor in your form:
```php
$form->ckeditor('content');
```