Nova Linkable Metrics

Add custom links to your Laravel Nova metrics.

Installation

You can install the package in to a Laravel app that uses Nova via composer:

composer require saintsystems/nova-linkable-metrics

Usage

To add the link ability to your Laravel Nova metric cards, you need to add the Linkable traits to your metrics.

For example, within your custom Nova value metric:

    // App\Nova\Metrics\NewUsers.php

    use SaintSystems\Nova\LinkableMetrics\LinkableValue;

    class NewUsers extends Value
    {
        use LinkableValue;

        //...omitted for brevity

Within your custom Nova trend metric:

    // App\Nova\Metrics\UsersPerDay.php

    use SaintSystems\Nova\LinkableMetrics\LinkableTrend;

    class UsersPerDay extends Trend
    {
        use LinkableTrend;

        //...omitted for brevity

Within your custom Nova partition metric:

    // App\Nova\Metrics\UsersByStatus.php

    use SaintSystems\Nova\LinkableMetrics\LinkablePartition;

    class UsersByStatus extends Partition
    {
        use LinkablePartition;

        //...omitted for brevity

Defining Metric Links

You can define metric links using the route method from the Linkable trait in one of two ways:

When the card is registered:

Index Route

    // App\Nova\Dashboards\Main.php

    /**
     * Get the cards for the dashboard.
     *
     * @return array
     */
    protected function cards()
    {
        return [
            (new NewUsers)->width('1/3')->route('nova.pages.index', ['resource' => 'users']),
        ];
    }

OR using a Lens Route

    // App\Nova\Lenses\UnverifiedEmail.php

    class UnverifiedEmail extends Lens
    {
        //... omitted for brevity

        public static function query(LensRequest $request, $query)
        {
            return $request->withOrdering($request->withFilters(
                $query->whereNull('email_verified_at')
            ));
        }

        //... omitted for brevity

        /**
         * Get the URI key for the lens.
         *
         * @return string
         */
        public function uriKey()
        {
            return 'unverified-email';
        }

    }

    // App\Nova\Dashboards\Main.php

    /**
     * Get the cards for the dashboard.
     *
     * @return array
     */
    protected function cards()
    {
        return [
            (new NewUsers)->width('1/3')->route('nova.pages.lens', ['resource' => 'users', 'lens' => 'unverified-email']),
        ];
    }

OR using a Filter Route

    // App\Nova\Filters\UserStatus.php

    class UserStatus extends Filter
    {
        //... omitted for brevity

        /**
         * Apply the filter to the given query.
         *
         * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
         * @param  \Illuminate\Database\Eloquent\Builder  $query
         * @return \Illuminate\Database\Eloquent\Builder
         */
        public function apply(NovaRequest $request, $query, $value)
        {
            return $query->where('active', $value);
        }

        /**
         * Get the filter's available options.
         *
         * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
         * @return array
         */
        public function options(NovaRequest $request)
        {
            return [
                'Active' => '1',
                'Inactive' => '0'
            ];
        }
    }

    // App\Nova\Dashboards\Main.php

    /**
     * Get the cards for the dashboard.
     *
     * @return array
     */
    protected function cards()
    {
        $filter = base64_encode(json_encode([
            [
                'class' => UserStatus::class,
                'value' => '1',
            ],
        ]));

        return [
            (new NewUsers)->width('1/3')->route('nova.pages.index', ['resource' => 'users', 'users_filter' => $filter]),
        ];
    }

Or, within the card itself (useful for cards only available on detail screens where you might want to filter the url based on the current resource):

    // In your linkable Nova metric class

    /**
     * Calculate the value of the metric.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return mixed
     */
    public function calculate(Request $request, UnitOfMeasure $unitOfMeasure)
    {
        $result = $this->result($unitOfMeasure->items()->count());
        $params = [
            'resource' => 'items',
            'viaResource' => $request->resource,
            'viaResourceId' => $unitOfMeasure->id,
            'viaRelationship' => 'items',
            'relationshipType' => 'hasMany',
        ];
        return $result->route('nova.pages.index', $params);
    }

Customizing Partition Links

By default, Partition metrics can have links just like Value and Trend metrics. However, using the default route method like on Value and Trend metrics (as shown above) will simply link the PartitionMetric card title to the provided route/url.

For greater customization, just like Customizing Partition Labels, you may pass a Closure to the new link method on the LinkablePartitionResult class that allows you to customize the link for each individual partition in the generated chart, and even pass partition information to the route like below:

    // App\Nova\Metrics\UsersByStatus

    use SaintSystems\Nova\LinkableMetrics\LinkablePartition;

    class UsersByStatus extends Partition
    {
        use LinkablePartition;

    /**
     * Calculate the value of the metric.
     *
     * @param  \Laravel\Nova\Http\Requests\NovaRequest  $request
     * @return mixed
     */
    public function calculate(NovaRequest $request)
    {
        return $this->count($request, User::class, 'active')
            ->label(fn ($value) => match ($value) {
                1 => 'Active',
                0 => 'Inactive'
            })
            ->link(fn ($value) => match ($value) {
                // 1 => null,
                default => route('nova.pages.index', ['resource' => 'users', 'users_filter' => base64_encode(json_encode([
                    [
                        'class' => UserStatus::class,
                        'value' => $value,
                    ],
                ]))], false)
            });
    }

    // ... omitted for brevity

Credits

License

The MIT License (MIT). Please see License File for more information.

License

philsturgeon/nova-linkable-metrics

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