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Create Advanced Filters With Filament

Open Source 1 min read

Table of Content

    Filters usually used in filament tables in the table method $table->filters()

    1// ...
    2public function table(Table $table): Table
    4 return $table
    5 ->filters([
    6 ....
    7 ]),

    Filament Table Filter

    Your First Filter

    Let's say we have a table contains posts, and each post has category, so, let's create a custom filter, to filter posts by category.


    First we need to have a PostResource, and Category model relationship.

    2class Post extends Model
    4 public function category(): BelongsTo
    5 {
    6 return $this->belongsTo(Category::class);
    7 }

    Create The Filter

    In your app/Filament/PostResource folder. Create a new folder called Filters, and you can create the class CategoryFilter.

    Let's first create the class, then we'll explain what's inside, shall we

    3namespace App\Filament\Resources\PostResource\Filters;
    5use Filament\Tables\Filters\SelectFilter;
    7class CategoryFilter extends SelectFilter
    9 public static function getDefaultName(): ?string
    10 {
    11 return 'category';
    12 }
    14 protected function setUp(): void
    15 {
    16 parent::setUp();
    18 $this->label('Filter By Category');
    20 $this->placeholder('Select a category to filter');
    22 $this->relationship('category', 'name');
    24 $this->searchable();
    25 }

    Let's explain the above filter

    • We extends SelectFilter filament class, to filter by dropdown
    • getDefaultName, is the name of your custom filter, to use it when you need it.
    • we extends the parent setUp of the SelectFilter class to make our own modifications
    • the label is self explanatory, to set a label for the filter
    • the placeholder, is also self explanatory
    • the relationship, is the method to the categories relationship
    • the searchable method, is to make the dropdown searchable.

    PS: You can use pretty much every method came with the Select component.

    Apply it

    If you want to apply this filter in PostResource. Do the following

    1public function table(Table $table): Table
    3 return $table
    4 ->filters([
    5 CategoryFilter::make(),
    6 ]),

    Other Filters To Choose From

    Filament came by default with multiple classes to support filtering system, which is


    Custom Filters in filament are very handy if you are the type of developer who like to take control, and use something in multiple places, and with custom filters you can use even form method to make your filter more advanced, and serve your needs.

    This is all what I have today, hope you learn something from it, and see yea in another article.

    Peace ✌️

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    About the Author

    Oussama's Profile Picture
    Full Stack Web Developer | Technical Writer

    Oussama is an experienced full-stack web developer with a strong focus on Laravel. He's passionate about crafting web applications with Filament and the TALL Stack. With 8+ years of experience, and he's a dedicated open-source contributor.


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