Repeater

#介绍

Repeater 组件允许你输出重复表单组件的 JSON 数组。

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;

Repeater::make('members')
    ->schema([
        TextInput::make('name')->required(),
        Select::make('role')
            ->options([
                'member' => 'Member',
                'administrator' => 'Administrator',
                'owner' => 'Owner',
            ])
            ->required(),
    ])
    ->columns(2)

我们建议你使用 JSON 列将 Repeater 数据存储在数据库中。此外，如果你使用的是 Eloquent，请确保该列具有 array 类型转换。

如上例所示，组件架构可以在组件的 schema() 方法中定义：

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\TextInput;

Repeater::make('members')
    ->schema([
        TextInput::make('name')->required(),
        // ...
    ])

If you wish to define a repeater with multiple schema blocks that can be repeated in any order, please use the builder.

#设置空默认项

Repeaters may have a certain number of empty items created by default. The default is only used when a schema is loaded with no data. In a standard panel resource, defaults are used on the Create page, not the Edit page. To use default items, pass the number of items to the defaultItems() method:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->defaultItems(3)

#添加项目

An action button is displayed below the repeater to allow the user to add a new item.

#设置添加按钮标签

You may set a label to customize the text that should be displayed in the button for adding a repeater item, using the addActionLabel() method:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->addActionLabel('Add member')

#对齐添加按钮

By default, the add action is aligned in the center. You may adjust this using the addActionAlignment() method, passing an Alignment option of Alignment::Start or Alignment::End:

use Filament\Forms\Components\Repeater;
use Filament\Support\Enums\Alignment;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->addActionAlignment(Alignment::Start)

#阻止用户添加项目

You may prevent the user from adding items to the repeater using the addable(false) method:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->addable(false)

#删除项目

An action button is displayed on each item to allow the user to delete it.

#阻止用户删除项目

You may prevent the user from deleting items from the repeater using the deletable(false) method:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->deletable(false)

#重新排序项目

A button is displayed on each item to allow the user to drag and drop to reorder it in the list.

#阻止用户重新排序

You may prevent the user from reordering items from the repeater using the reorderable(false) method:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->reorderable(false)

#使用按钮重新排序

You may use the reorderableWithButtons() method to enable reordering items with buttons to move the item up and down:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->reorderableWithButtons()

Optionally, you may pass a boolean value to control if the repeater should be ordered with buttons or not:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->reorderableWithButtons(FeatureFlag::active())

#阻止通过拖拽重新排序

You may use the reorderableWituhDragAndDrop(false) method to prevent items from being ordered with drag and drop:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->reorderableWithDragAndDrop(false)

#折叠项目

The repeater may be collapsible() to optionally hide content in long forms:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->schema([
        // ...
    ])
    ->collapsible()

You may also collapse all items by default:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->schema([
        // ...
    ])
    ->collapsed()

Optionally, the collapsible() and collapsed() methods accept a boolean value to control if the repeater should be collapsible and collapsed or not:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->schema([
        // ...
    ])
    ->collapsible(FeatureFlag::active())
    ->collapsed(FeatureFlag::active())

#克隆项目

You may allow repeater items to be duplicated using the cloneable() method:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->schema([
        // ...
    ])
    ->cloneable()

Optionally, the cloneable() method accepts a boolean value to control if the repeater should be cloneable or not:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->schema([
        // ...
    ])
    ->cloneable(FeatureFlag::active())

#与 Eloquent 关联集成

You may employ the relationship() method of the Repeater to configure a HasMany relationship. Filament will load the item data from the relationship, and save it back to the relationship when the form is submitted. If a custom relationship name is not passed to relationship(), Filament will use the field name as the relationship name:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->relationship()
    ->schema([
        // ...
    ])

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->disabled()
    ->relationship()
    ->schema([
        // ...
    ])

#重新排序关联中的项目

By default, reordering relationship repeater items is disabled. This is because your related model needs a sort column to store the order of related records. To enable reordering, you may use the orderColumn() method, passing in a name of the column on your related model to store the order in:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->relationship()
    ->schema([
        // ...
    ])
    ->orderColumn('sort')

If you use something like spatie/eloquent-sortable with an order column such as order_column, you may pass this in to orderColumn():

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->relationship()
    ->schema([
        // ...
    ])
    ->orderColumn('order_column')

#Integrating with a BelongsToMany Eloquent relationship

There is a common misconception that using a BelongsToMany relationship with a repeater is as simple as using a HasMany relationship. This is not the case, as a BelongsToMany relationship requires a pivot table to store the relationship data. The repeater saves its data to the related model, not the pivot table. Therefore, if you want to map each repeater item to a row in the pivot table, you must use a HasMany relationship with a pivot model to use a repeater with a BelongsToMany relationship.

Imagine you have a form to create a new Order model. Each order belongs to many Product models, and each product belongs to many orders. You have a order_product pivot table to store the relationship data. Instead of using the products relationship with the repeater, you should create a new relationship called orderProducts on the Order model, and use that with the repeater:

use Illuminate\Database\Eloquent\Relations\HasMany;

public function orderProducts(): HasMany
{
    return $this->hasMany(OrderProduct::class);
}

If you don’t already have an OrderProduct pivot model, you should create that, with inverse relationships to Order and Product:

use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\Pivot;

class OrderProduct extends Pivot
{
    public $incrementing = true;

    public function order(): BelongsTo
    {
        return $this->belongsTo(Order::class);
    }

    public function product(): BelongsTo
    {
        return $this->belongsTo(Product::class);
    }
}

Now you can use the orderProducts relationship with the repeater, and it will save the data to the order_product pivot table:

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\Select;

Repeater::make('orderProducts')
    ->relationship()
    ->schema([
        Select::make('product_id')
            ->relationship('product', 'name')
            ->required(),
        // ...
    ])

#Mutating related item data before filling the field

You may mutate the data for a related item before it is filled into the field using the mutateRelationshipDataBeforeFillUsing() method. This method accepts a closure that receives the current item’s data in a $data variable. You must return the modified array of data:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->relationship()
    ->schema([
        // ...
    ])
    ->mutateRelationshipDataBeforeFillUsing(function (array $data): array {
        $data['user_id'] = auth()->id();

        return $data;
    })

#Mutating related item data before creating

You may mutate the data for a new related item before it is created in the database using the mutateRelationshipDataBeforeCreateUsing() method. This method accepts a closure that receives the current item’s data in a $data variable. You can choose to return either the modified array of data, or null to prevent the item from being created:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->relationship()
    ->schema([
        // ...
    ])
    ->mutateRelationshipDataBeforeCreateUsing(function (array $data): array {
        $data['user_id'] = auth()->id();

        return $data;
    })

#Mutating related item data before saving

You may mutate the data for an existing related item before it is saved in the database using the mutateRelationshipDataBeforeSaveUsing() method. This method accepts a closure that receives the current item’s data in a $data variable. You can choose to return either the modified array of data, or null to prevent the item from being saved:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->relationship()
    ->schema([
        // ...
    ])
    ->mutateRelationshipDataBeforeSaveUsing(function (array $data): array {
        $data['user_id'] = auth()->id();

        return $data;
    })

#Grid layout

You may organize repeater items into columns by using the grid() method:

use Filament\Forms\Components\Repeater;

Repeater::make('qualifications')
    ->schema([
        // ...
    ])
    ->grid(2)

This method accepts the same options as the columns() method of the grid. This allows you to responsively customize the number of grid columns at various breakpoints.

#Adding a label to repeater items based on their content

You may add a label for repeater items using the itemLabel() method. This method accepts a closure that receives the current item’s data in a $state variable. You must return a string to be used as the item label:

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Select;

Repeater::make('members')
    ->schema([
        TextInput::make('name')
            ->required()
            ->live(onBlur: true),
        Select::make('role')
            ->options([
                'member' => 'Member',
                'administrator' => 'Administrator',
                'owner' => 'Owner',
            ])
            ->required(),
    ])
    ->columns(2)
    ->itemLabel(fn (array $state): ?string => $state['name'] ?? null),

#Simple repeaters with one field

You can use the simple() method to create a repeater with a single field, using a minimal design

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\TextInput;

Repeater::make('invitations')
    ->simple(
        TextInput::make('email')
            ->email()
            ->required(),
    )

Instead of using a nested array to store data, simple repeaters use a flat array of values. This means that the data structure for the above example could look like this:

[
    'invitations' => [
        'dan@filamentphp.com',
        'ryan@filamentphp.com',
    ],
],

#Using $get() to access parent field values

All form components are able to use $get() and $set() to access another field’s value. However, you might experience unexpected behavior when using this inside the repeater’s schema.

This is because $get() and $set(), by default, are scoped to the current repeater item. This means that you are able to interact with another field inside that repeater item easily without knowing which repeater item the current form component belongs to.

The consequence of this is that you may be confused when you are unable to interact with a field outside the repeater. We use ../ syntax to solve this problem - $get('../parent_field_name').

Consider your form has this data structure:

[
    'client_id' => 1,

    'repeater' => [
        'item1' => [
            'service_id' => 2,
        ],
    ],
]

You are trying to retrieve the value of client_id from inside the repeater item.

$get() is relative to the current repeater item, so $get('client_id') is looking for $get('repeater.item1.client_id').

You can use ../ to go up a level in the data structure, so $get('../client_id') is $get('repeater.client_id') and $get('../client_id') is $get('client_id').

The special case of $get() with no arguments, or $get('') or $get('./'), will always return the full data array for the current repeater item.

#Table repeaters

You can present repeater items in a table format using the table() method, which accepts an array of TableColumn objects. These objects represent the columns of the table, which correspond to any components in the schema of the repeater:

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\Repeater\TableColumn;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;

Repeater::make('members')
    ->table([
        TableColumn::make('Name'),
        TableColumn::make('Role'),
    ])
    ->schema([
        TextInput::make('name')
            ->required(),
        Select::make('role')
            ->options([
                'member' => 'Member',
                'administrator' => 'Administrator',
                'owner' => 'Owner',
            ])
            ->required(),
    ])

The labels displayed in the header of the table are passed to the TableColumn::make() method. If you want to provide an accessible label for a column but do not wish to display it, you can use the hiddenHeaderLabel() method:

use Filament\Forms\Components\Repeater\TableColumn;

TableColumn::make('Name')
    ->hiddenHeaderLabel()

If you would like to mark a column as “required” with a red asterisk, you can use the markAsRequired() method:

use Filament\Forms\Components\Repeater\TableColumn;

TableColumn::make('Name')
    ->markAsRequired()

You can enable wrapping of the column header using the wrapHeader() method:

use Filament\Forms\Components\Repeater\TableColumn;

TableColumn::make('Name')
    ->wrapHeader()

You can also adjust the alignment of the column header using the alignment() method, passing an Alignment option of Alignment::Start, Alignment::Center, or Alignment::End:

use Filament\Forms\Components\Repeater\TableColumn;
use Filament\Support\Enums\Alignment;

TableColumn::make('Name')
    ->alignment(Alignment::Start)

You can set a fixed column width using the width() method, passing a string value that represents the width of the column. This value is passed directly to the style attribute of the column header:

use Filament\Forms\Components\Repeater\TableColumn;

TableColumn::make('Name')
    ->width('200px')

#Repeater validation

As well as all rules listed on the validation page, there are additional rules that are specific to repeaters.

#Number of items validation

You can validate the minimum and maximum number of items that you can have in a repeater by setting the minItems() and maxItems() methods:

use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->minItems(2)
    ->maxItems(5)

#Distinct state validation

In many cases, you will want to ensure some sort of uniqueness between repeater items. A couple of common examples could be:

• Ensuring that only one checkbox or toggle is activated at once across items in the repeater.
• Ensuring that an option may only be selected once across select, radio, checkbox list, or toggle buttons fields in a repeater.

You can use the distinct() method to validate that the state of a field is unique across all items in the repeater:

use Filament\Forms\Components\Checkbox;
use Filament\Forms\Components\Repeater;

Repeater::make('answers')
    ->schema([
        // ...
        Checkbox::make('is_correct')
            ->distinct(),
    ])

The behavior of the distinct() validation depends on the data type that the field handles

• If the field returns a boolean, like a checkbox or toggle, the validation will ensure that only one item has a value of true. There may be many fields in the repeater that have a value of false.
• Otherwise, for fields like a select, radio, checkbox list, or toggle buttons, the validation will ensure that each option may only be selected once across all items in the repeater.

Optionally, you may pass a boolean value to the distinct() method to control if the field should be distinct or not:

use Filament\Forms\Components\Checkbox;

Checkbox::make('is_correct')
    ->distinct(FeatureFlag::active())

#Automatically fixing indistinct state

If you’d like to automatically fix indistinct state, you can use the fixIndistinctState() method:

use Filament\Forms\Components\Checkbox;
use Filament\Forms\Components\Repeater;

Repeater::make('answers')
    ->schema([
        // ...
        Checkbox::make('is_correct')
            ->fixIndistinctState(),
    ])

This method will automatically enable the distinct() and live() methods on the field.

Depending on the data type that the field handles, the behavior of the fixIndistinctState() adapts:

• If the field returns a boolean, like a checkbox or toggle, and one of the fields is enabled, Filament will automatically disable all other enabled fields on behalf of the user.
• Otherwise, for fields like a select, radio, checkbox list, or toggle buttons, when a user selects an option, Filament will automatically deselect all other usages of that option on behalf of the user.

Optionally, you may pass a boolean value to the fixIndistinctState() method to control if the field should fix indistinct state or not:

use Filament\Forms\Components\Checkbox;

Checkbox::make('is_correct')
    ->fixIndistinctState(FeatureFlag::active())

#Disabling options when they are already selected in another item

If you’d like to disable options in a select, radio, checkbox list, or toggle buttons when they are already selected in another item, you can use the disableOptionsWhenSelectedInSiblingRepeaterItems() method:

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\Select;

Repeater::make('members')
    ->schema([
        Select::make('role')
            ->options([
                // ...
            ])
            ->disableOptionsWhenSelectedInSiblingRepeaterItems(),
    ])

This method will automatically enable the distinct() and live() methods on the field.

use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\Select;

Repeater::make('members')
    ->schema([
        Select::make('role')
            ->options([
                // ...
            ])
            ->disableOptionsWhenSelectedInSiblingRepeaterItems()
            ->disableOptionWhen(fn (string $value): bool => $value === 'super_admin', merge: true),
    ])

#Customizing the repeater item actions

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()
• cloneAction()
• collapseAction()
• collapseAllAction()
• deleteAction()
• expandAction()
• expandAllAction()
• moveDownAction()
• moveUpAction()
• reorderAction()

Here is an example of how you might customize an action:

use Filament\Actions\Action;
use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->collapseAllAction(
        fn (Action $action) => $action->label('Collapse all members'),
    )

#Confirming repeater actions with a modal

You can confirm actions with a modal by using the requiresConfirmation() method on the action object. You may use any modal customization method to change its content and behavior:

use Filament\Actions\Action;
use Filament\Forms\Components\Repeater;

Repeater::make('members')
    ->schema([
        // ...
    ])
    ->deleteAction(
        fn (Action $action) => $action->requiresConfirmation(),
    )

#Adding extra item actions to a repeater

You may add new action buttons to the header of each repeater item by passing Action objects into extraItemActions():

use Filament\Actions\Action;
use Filament\Forms\Components\Repeater;
use Filament\Forms\Components\TextInput;
use Filament\Support\Icons\Heroicon;
use Illuminate\Support\Facades\Mail;

Repeater::make('members')
    ->schema([
        TextInput::make('email')
            ->label('Email address')
            ->email(),
        // ...
    ])
    ->extraItemActions([
        Action::make('sendEmail')
            ->icon(Heroicon::Envelope)
            ->action(function (array $arguments, Repeater $component): void {
                $itemData = $component->getItemState($arguments['item']);

                Mail::to($itemData['email'])
                    ->send(
                        // ...
                    );
            }),
    ])

In this example, $arguments['item'] gives you the ID of the current repeater item. You can validate the data in that repeater item using the getItemState() method on the repeater component. This method returns the validated data for the item. If the item is not valid, it will cancel the action and show an error message for that item in the form.

If you want to get the raw data from the current item without validating it, you can use $component->getRawItemState($arguments['item']) instead.

If you want to manipulate the raw data for the entire repeater, for example, to add, remove or modify items, you can use $component->getState() to get the data, and $component->state($state) to set it again:

use Illuminate\Support\Str;

// Get the raw data for the entire repeater
$state = $component->getState();

// Add an item, with a random UUID as the key
$state[Str::uuid()] = [
    'email' => auth()->user()->email,
];

// Set the new data for the repeater
$component->state($state);

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