# Filament - Forms/Fields/Key Value
Source: https://filamentphp.com/docs/3.x/forms/fields/key-value
#Overview
---------
The key-value field allows you to interact with one-dimensional JSON object:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
```
 
If you’re saving the data in Eloquent, you should be sure to add an `array` cast to the model property:
```php
use Illuminate\Database\Eloquent\Model;
class Post extends Model
{
protected $casts = [
'meta' => 'array',
];
// ...
}
```
#Adding rows
------------
An action button is displayed below the field to allow the user to add a new row.
#Setting the add action button’s label
--------------------------------------
You may set a label to customize the text that should be displayed in the button for adding a row, using the `addActionLabel()` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->addActionLabel('Add property')
```
### #Preventing the user from adding rows
You may prevent the user from adding rows using the `addable(false)` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->addable(false)
```
#Deleting rows
--------------
An action button is displayed on each item to allow the user to delete it.
### #Preventing the user from deleting rows
You may prevent the user from deleting rows using the `deletable(false)` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->deletable(false)
```
#Editing keys
-------------
### #Customizing the key fields’ label
You may customize the label for the key fields using the `keyLabel()` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->keyLabel('Property name')
```
### #Adding key field placeholders
You may also add placeholders for the key fields using the `keyPlaceholder()` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->keyPlaceholder('Property name')
```
### #Preventing the user from editing keys
You may prevent the user from editing keys using the `editableKeys(false)` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->editableKeys(false)
```
#Editing values
---------------
### #Customizing the value fields’ label
You may customize the label for the value fields using the `valueLabel()` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->valueLabel('Property value')
```
### #Adding value field placeholders
You may also add placeholders for the value fields using the `valuePlaceholder()` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->valuePlaceholder('Property value')
```
### #Preventing the user from editing values
You may prevent the user from editing values using the `editableValues(false)` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->editableValues(false)
```
#Reordering rows
----------------
You can allow the user to reorder rows within the table using the `reorderable()` method:
```php
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->reorderable()
```
 
#Customizing the key-value action objects
-----------------------------------------
This field uses action objects for easy customization of buttons within it. You can customize these buttons by passing a function to an action registration method. The function has access to the `$action` object, which you can use to customize it. The following methods are available to customize the actions:
* `addAction()`
* `deleteAction()`
* `reorderAction()`
Here is an example of how you might customize an action:
```php
use Filament\Forms\Components\Actions\Action;
use Filament\Forms\Components\KeyValue;
KeyValue::make('meta')
->deleteAction(
fn (Action $action) => $action->icon('heroicon-m-x-mark'),
)
```
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