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Chart widgets

Overview​

Filament comes with many "chart" widget templates, which you can use to display real-time, interactive charts.

Start by creating a widget with the command:

php artisan make:filament-widget BlogPostsChart --chart

There is a single ChartWidget class that is used for all charts. The type of chart is set by the getType() method. In this example, that method returns the string 'line'.

The protected static ?string $heading variable is used to set the heading that describes the chart. If you need to set the heading dynamically, you can override the getHeading() method.

The getData() method is used to return an array of datasets and labels. Each dataset is a labeled array of points to plot on the chart, and each label is a string. This structure is identical to the Chart.js library, which Filament uses to render charts. You may use the Chart.js documentation to fully understand the possibilities to return from getData(), based on the chart type.

<?php

namespace App\Filament\Widgets;

use Filament\Widgets\ChartWidget;

class BlogPostsChart extends ChartWidget
{
    protected static ?string $heading = 'Blog Posts';

    protected function getData(): array
    {
        return [
            'datasets' => [
                [
                    'label' => 'Blog posts created',
                    'data' => [0, 10, 5, 2, 21, 32, 45, 74, 65, 45, 77, 89],
                ],
            ],
            'labels' => ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
        ];
    }

    protected function getType(): string
    {
        return 'line';
    }
}

Now, check out your widget in the dashboard.

Available chart types​

Below is a list of available chart widget classes which you may extend, and their corresponding Chart.js documentation page, for inspiration on what to return from getData():

Customizing the chart color​

You can customize the color of the chart data by setting the $color property to either danger, gray, info, primary, success or warning:

protected static string $color = 'info';

If you're looking to customize the color further, or use multiple colors across multiple datasets, you can still make use of Chart.js's color options in the data:

protected function getData(): array
{
    return [
        'datasets' => [
            [
                'label' => 'Blog posts created',
                'data' => [0, 10, 5, 2, 21, 32, 45, 74, 65, 45, 77, 89],
                'backgroundColor' => '#36A2EB',
                'borderColor' => '#9BD0F5',
            ],
        ],
        'labels' => ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
    ];
}

Generating chart data from an Eloquent model​

To generate chart data from an Eloquent model, Filament recommends that you install the flowframe/laravel-trend package. You can view the documentation.

Here is an example of generating chart data from a model using the laravel-trend package:

use Flowframe\Trend\Trend;
use Flowframe\Trend\TrendValue;

protected function getData(): array
{
    $data = Trend::model(BlogPost::class)
        ->between(
            start: now()->startOfYear(),
            end: now()->endOfYear(),
        )
        ->perMonth()
        ->count();

    return [
        'datasets' => [
            [
                'label' => 'Blog posts',
                'data' => $data->map(fn (TrendValue $value) => $value->aggregate),
            ],
        ],
        'labels' => $data->map(fn (TrendValue $value) => $value->date),
    ];
}

Filtering chart data​

You can set up chart filters to change the data shown on chart. Commonly, this is used to change the time period that chart data is rendered for.

To set a default filter value, set the $filter property:

public ?string $filter = 'today';

Then, define the getFilters() method to return an array of values and labels for your filter:

protected function getFilters(): ?array
{
    return [
        'today' => 'Today',
        'week' => 'Last week',
        'month' => 'Last month',
        'year' => 'This year',
    ];
}

You can use the active filter value within your getData() method:

protected function getData(): array
{
    $activeFilter = $this->filter;

    // ...
}

Live updating chart data (polling)​

By default, chart widgets refresh their data every 5 seconds.

To customize this, you may override the $pollingInterval property on the class to a new interval:

protected static ?string $pollingInterval = '10s';

Alternatively, you may disable polling altogether:

protected static ?string $pollingInterval = null;

Setting a maximum chart height​

You may place a maximum height on the chart to ensure that it doesn't get too big, using the $maxHeight property:

protected static ?string $maxHeight = '300px';

Setting chart configuration options​

You may specify an $options variable on the chart class to control the many configuration options that the Chart.js library provides. For instance, you could turn off the legend for a line chart:

protected static ?array $options = [
    'plugins' => [
        'legend' => [
            'display' => false,
        ],
    ],
];

Alternatively, you can override the getOptions() method to return a dynamic array of options:

protected function getOptions(): array
{
    return [
        'plugins' => [
            'legend' => [
                'display' => false,
            ],
        ],
    ];
}

These PHP arrays will get transformed into JSON objects when the chart is rendered. If you want to return raw JavaScript from this method instead, you can return a RawJs object. This is useful if you want to use a JavaScript callback function, for example:

use Filament\Support\RawJs;

protected function getOptions(): RawJs
{
    return RawJs::make(<<<JS
        {
            scales: {
                y: {
                    ticks: {
                        callback: (value) => '€' + value,
                    },
                },
            },
        }
    JS);
}

Adding a description​

You may add a description, below the heading of the chart, using the getDescription() method:

public function getDescription(): ?string
{
    return 'The number of blog posts published per month.';
}

Disabling lazy loading​

By default, widgets are lazy-loaded. This means that they will only be loaded when they are visible on the page.

To disable this behavior, you may override the $isLazy property on the widget class:

protected static bool $isLazy = true;