Carbon date check if it is specified date

Question

I have a link in my menu where I pass date to filter. But I want to achieve this:

• If date is weekday, I want to show day before. For example if it is Thursday, 2017-09-28, I want to show Wednesday 2017-09-27
• If date is weekend, I want to show last friday before weekend. For example if it is 2017-09-23 or 2017-09-24 I want to show 2017-09-22
• If date is Monday, I want to show last friday. For example if date is 2017-09-25, I want to show 2017-09-23

For now I did this:

<li class="navMenu">
  <a href="/latest?date=
    @if (Carbon\Carbon::today()->isWeekday())

     {{Carbon\Carbon::yesterday()->format('Y-m-d')}}

    @else 
      {{Carbon\Carbon::now()->startOfWeek()->format('Y-m-d')}}
    @endif">{{ trans('language.newCampaigns') }}
   </a>
</li>

Answer 1

You can fall back to native PHP ->modify modifiers since Carbon inherits from date:

<li class="navMenu">
  <a href="/latest?date={{Carbon\Carbon::today()->modify("last weekday")->format('Y-m-d')}}">    
   </a>
</li>