小贝子编程

如何在laravel中添加一个新的碳函数来使用碳日期



我知道碳是如何工作的，但我想创建自定义碳函数。碳原子有一个叫做diffForHumans()的函数，我想对这个函数做一些修改，叫它diffForHumansCustom()。如果我编辑Carbon.php供应商文件，我可以实现我的目标，但修改将在composer update之后消失。任何建议或代码帮助是感激的。

原始函数
public function diffForHumans(Carbon $other = null, $absolute = false)
    {
        $isNow = $other === null;
        if ($isNow) {
            $other = static::now($this->tz);
        }
        $diffInterval = $this->diff($other);
        switch (true) {
            case ($diffInterval->y > 0):
                $unit = 'year';
                $delta = $diffInterval->y;
                break;
            case ($diffInterval->m > 0):
                $unit = 'month';
                $delta = $diffInterval->m;
                break;
            case ($diffInterval->d > 0):
                $unit = 'day';
                $delta = $diffInterval->d;
                if ($delta >= self::DAYS_PER_WEEK) {
                    $unit = 'week';
                    $delta = floor($delta / self::DAYS_PER_WEEK);
                }
                break;
            case ($diffInterval->h > 0):
                $unit = 'hour';
                $delta = $diffInterval->h;
                break;
            case ($diffInterval->i > 0):
                $unit = 'minute';
                $delta = $diffInterval->i;
                break;
            default:
                $delta = $diffInterval->s;
                $unit = 'second';
                break;
        }
        if ($delta == 0) {
            $delta = 1;
        }
        $txt = $delta . ' ' . $unit;
        $txt .= $delta == 1 ? '' : 's';
        if ($absolute) {
            return $txt;
        }
        $isFuture = $diffInterval->invert === 1;
        if ($isNow) {
            if ($isFuture) {
                return $txt . ' from now';
            }
            return $txt . ' ago';
        }
        if ($isFuture) {
            return $txt . ' after';
        }
        return $txt . ' before';
    }

修改后的函数

public function diffForHumansCustom(Carbon $other = null, $absolute = false)
    {
        $isNow = $other === null;
        if ($isNow) {
            $other = static::now($this->tz);
        }
        $diffInterval = $this->diff($other);
        switch (true) {
            case ($diffInterval->y > 0):
                $unit = 'year';
                $delta = $diffInterval->y;
                break;
            case ($diffInterval->m > 0):
                $unit = 'month';
                $delta = $diffInterval->m;
                break;
            case ($diffInterval->d > 0):
                $unit = 'day';
                $delta = $diffInterval->d;
                if ($delta >= self::DAYS_PER_WEEK) {
                    $unit = 'week';
                    $delta = floor($delta / self::DAYS_PER_WEEK);
                }
                break;
            case ($diffInterval->h > 0):
                $unit = 'hour';
                $delta = $diffInterval->h;
                break;
            case ($diffInterval->i > 0):
                $unit = 'minute';
                $delta = $diffInterval->i;
                break;
            default:
                $delta = $diffInterval->s;
                $unit = 'second';
                break;
        }
        if ($delta == 0) {
            $delta = 1;
        }
        $txt = $delta . ' ' . $unit;
        $txt .= $delta == 1 ? '' : 's';
        if($unit == 'second' && $delta<=59) {
           return 'Just now';
        }
        // Greater than 3 days
        // [xx] [Month] [year, only displays if not current year'] at [time in 24 clock].
        if(($unit == 'day' && $delta > 3) || ($unit == 'week') || ($unit == 'month') || ($unit == 'year')) {
           $timestamp = $this->getTimestamp();
           $curYear = date('Y');
           $y = ($curYear == date('Y', $timestamp)) ? '': date('Y', $timestamp);
           $date = date('j F '.$y, $timestamp);
           $time = date('H:i', $timestamp);
           $txt = rtrim($date).' at '.$time;
           return $txt;
        }
        if ($absolute) {
            return $txt;
        }
        $isFuture = $diffInterval->invert === 1;
        if ($isNow) {
            if ($isFuture) {
                return $txt . ' from now';
            }
            return $txt . ' ago';
        }
        if ($isFuture) {
            return $txt . ' after';
        }
        return $txt . ' before';
    }

对于2019年来到这里的任何人，我发现添加Carbon::macro函数的更整洁的解决方案是使用Laravel ServiceProvider

1)使用php artisan make:provider CarbonServiceProvider创建服务提供商

CarbonServiceProvider 

<?php
namespace AppProviders;
use CarbonCarbon;
use IlluminateSupportServiceProvider;
class CarbonServiceProvider extends ServiceProvider
{
    /**
     * Register services.
     */
    public function register()
    {
    }
    /**
     * Bootstrap services.
     */
    public function boot()
    {
        Carbon::macro('easterDate', function ($year) {
            return Carbon::createMidnightDate($year, 3, 21)->addDays(easter_days($year));
        });
    }
}

2)在config/app.php

中注册您的服务提供商

app/config 

<?php
return [
    'providers' => [
        ...
        /*
         * Application Service Providers...
         */
        AppProvidersAppServiceProvider::class,
        AppProvidersAuthServiceProvider::class,
        AppProvidersBroadcastServiceProvider::class,
        AppProvidersEventServiceProvider::class,
        AppProvidersRouteServiceProvider::class,
        AppProvidersDatabaseServiceProvider::class,
        AppProvidersCarbonServiceProvider::class,
        ...
    ],
];

3)你现在可以在你的应用程序的任何地方访问你的宏。

ExampleController 

<?php
namespace AppHttpControllers;
use CarbonCarbon;
use IlluminateHttpRequest;
use AppHttpControllersController;
class ExampleController extends Controller
{
    /**
     * Show the form for creating a new resource.
     *
     * @return IlluminateHttpResponse
     */
    public function index(Request $request)
    {
        dd(Carbon::easterDate(2015));
    }
}

在这个例子中，这应该返回

Carbon @1428192000 {#2663 ▼
  date: 2015-04-05 00:00:00.0 UTC (+00:00)
}

享受吧!

你可以扩展碳类，然后使用你的子类来代替碳，或者简单地用diffForHumansCustom()方法创建一个Trait，并在你的类中使用它

扩展碳: 

<?php
    namespace AppHttpControllersHelpers;
    use CarbonCarbon;
    class CarbonCopy extends Carbon {
        public function diffForHumansCustom(Carbon $other = null, $absolute = false) {
            // YOUR UNIQUE IMPLEMENTATION, CODE & LOGIC...
        }
    }

使用Trait代替

<?php
    namespace AppHttpControllersHelpers;
    use CarbonCarbon;
    trait CarbonT {     
        public function diffForHumansCustom(Carbon $other = null, $absolute = false) {
            // YOUR UNIQUE IMPLEMENTATION, CODE & LOGIC...
        }
    }

Usage in Your Controller: as Trait

<?php
    namespace AppHttpControllers;
    use AppHttpControllersHelpersCarbonT;
    use CarbonCarbon;
    use IlluminateHttpRequest;
    use AppHttpRequests;
    use AppUser;
    class TestController extends Controller {
        use CarbonT;
        public function carbonRelatedOperation(){
            $cbnDate    = Carbon::createFromFormat("Y-m-d H:i:s", "2016-05-02 11:11:11");
            $customDiff = $this->diffForHumansCustom($cbnDate);
            dd( $customDiff );
        }
    }

在你的控制器内部使用:作为碳的子类

<?php
    namespace AppHttpControllers;
    use AppHttpControllersHelpersCarbonCopy;
    use CarbonCarbon;
    use IlluminateHttpRequest;
    use AppHttpRequests;
    use AppUser;
    class TestController extends Controller {
        public function carbonRelatedOperation(){
            $cbnDate    = Carbon::createFromFormat("Y-m-d H:i:s", "2016-05-02 11:11:11");
            $cbCopy     = new CarbonCopy();
            dd( $cbCopy->diffForHumansCustom($cbnDate) );
        }
    }

我已经接受了@Poiz的回答，但我只是想向你们展示我是如何做到的。

创建了一个模型IddCarbon.php 

<?php
namespace AppModels;
use CarbonCarbon as Carbon;

class IddCarbon extends Carbon {
    public function diffForHumansIdd(Carbon $other = null, $absolute = false)
    {
        $isNow = $other === null;
        if ($isNow) {
            $other = Carbon::now($this->tz);
        }
        $diffInterval = $this->diff($other);
        switch (true) {
            case ($diffInterval->y > 0):
                $unit = 'year';
                $delta = $diffInterval->y;
                break;
            case ($diffInterval->m > 0):
                $unit = 'month';
                $delta = $diffInterval->m;
                break;
            case ($diffInterval->d > 0):
                $unit = 'day';
                $delta = $diffInterval->d;
                if ($delta >= Carbon::DAYS_PER_WEEK) {
                    $unit = 'week';
                    $delta = floor($delta / Carbon::DAYS_PER_WEEK);
                }
                break;
            case ($diffInterval->h > 0):
                $unit = 'hour';
                $delta = $diffInterval->h;
                break;
            case ($diffInterval->i > 0):
                $unit = 'minute';
                $delta = $diffInterval->i;
                break;
            default:
                $delta = $diffInterval->s;
                $unit = 'second';
                break;
        }
        if ($delta == 0) {
            $delta = 1;
        }
        $txt = $delta . ' ' . $unit;
        $txt .= $delta == 1 ? '' : 's';
        if($unit == 'second' && $delta<=59) {
            return 'Just now';
        }
        // Greater than 3 days
        // [xx] [Month] [year, only displays if not current year'] at [time in 24 clock].
        if(($unit == 'day' && $delta > 3) || ($unit == 'week') || ($unit == 'month') || ($unit == 'year')) {
            $timestamp = $this->getTimestamp();
            $curYear = date('Y');
            $y = ($curYear == date('Y', $timestamp)) ? '': date('Y', $timestamp);
            $date = date('j F '.$y, $timestamp);
            $time = date('H:i', $timestamp);
            $txt = rtrim($date).' at '.$time;
            return $txt;
        }
        if ($absolute) {
            return $txt;
        }
        $isFuture = $diffInterval->invert === 1;
        if ($isNow) {
            if ($isFuture) {
                return $txt . ' from now';
            }
            return $txt . ' ago';
        }
        if ($isFuture) {
            return $txt . ' after';
        }
        return $txt . ' before';
    }
}

创建了一个辅助函数

function diffForHumans($date)
{
        $timeDiff = AppModelsIddCarbon::parse($date);
        return $timeDiff->diffForHumansIdd();
}
使用

$article = Article::where('id','=','123')->first();//Eloquent result
$created = $article->created_at->toDateTimeString();//sample $created '2016-08-08 11:50:38'
$result = diffForHumans($created);
echo $result;

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