Blade 에서 사용하는 유용한 문법

참조 : https://laravel.com/docs/10.x/blade

주석

{{-- 주석문 --}}

제어구조

@if ~ @else

@if(조건식)
@endif

@if(조건식)
@else
@endif

@if(조건식)
@elseif(조건식)
@endif

@switch

@switch($i)
  @case(1)
    First case...
    @break

  @case(2)
    Second case...
    @break

  @default
    Default case...
@endswitch

@for

@for ($i = 0; $i < 10; $i++)
  The current value is {{ $i }}
@endfor

@foreach

@foreach ($users as $user)
  <p>This is user {{ $user->id }}</p>
@endforeach

@foreach @break

@foreach ($users as $user)
  @continue($user->type == 1)

  <li>{{ $user->name }}</li>

  @break($user->number == 5)
@endforeach

@forelse

@forelse ($users as $user)
  <li>{{ $user->name }}</li>
@empty
  <p>No users</p>
@endforelse

@while

@while (true)
  <p>I'm looping forever.</p>
@endw

@unless

@unless (Auth::check())
  You are not signed in.
@endunless

@isset

@isset($records)
  // $records is defined and is not null...
@endisset

@empty

@empty($records)
  // $records is "empty"...
@endempty

@production
  // Production specific content...
@endproduction

@env('staging')
  // The application is running in "staging"...
@endenv
 
@env(['staging', 'production'])
  // The application is running in "staging" or "production"...
@endenv

@guest

@guest
// 로그인 전이면
@else
// 로그인 후이면
@endif

@guest('admin')
  // The user is not authenticated...
@endguest

@auth

@auth
  // The user is authenticated...
@endauth

@auth('admin')
  // The user is authenticated... and have admin
@endauth

• Auth에 hasRole를 정의하여 role에 따라 다양한 디스플레이도 가능합니다.
• 아래처럼 사용하기 위해서는 hasRole이라는 trait을 사용해야 합니다. 이 파트는 Auth 에서 별도 설명 드리겠습니다.

@if (Auth::user()->hasRole('administrator'))
// admin일경우
@endif
@if (Auth::user()->hasRole('normal'))
// 일반 유저일 경우
@endif

@php

• blade에서 php 문법을 사용하여 바로 코딩을 할때 유용합니다.

@php
  // php 문법
@endphp

@hasSection('navigation')
  <div class="pull-right">
    @yield('navigation')
  </div>

  <div class="clearfix"></div>
@endif

@sectionMissing('navigation')
  <div class="pull-right">
    @include('default-navigation')
  </div>
@endif

Form 관련 Attributes

• old에 관한 내용은 이곳에서 이전 입력값 조회 을 참조 바랍니다.

@checked

<input type="checkbox"
  name="active"
  value="active"
  @checked(old('active', $user->active)) />

@selected

<select name="version">
  @foreach ($product->versions as $version)
    <option value="{{ $version }}" @selected(old('version') == $version)>
      {{ $version }}
    </option>
  @endforeach
</select>

@disabled

<button type="submit" @disabled($errors->isNotEmpty())>Submit</button>

@readonly

<input type="email"
  name="email"
  value="[email protected]"
  @readonly($user->isNotAdmin()) />

@required

<input type="text"
  name="title"
  value="title"
  @required($user->isAdmin()) />

Css 관련 Style 및 Class

@class

<span @class([
  'p-4',
  'font-bold' => $isActive,
  'text-gray-500' => ! $isActive,
  'bg-red' => $hasError,
])></span>

@style

<span @style([
  'background-color: red',
  'font-weight: bold' => $isActive,
])></span>

Form 관련

CSRF Field

<form method="POST" action="/profile">
  @csrf
  ...
</form>

Method Field

<form action="/foo/bar" method="POST">
  @method('PUT')\
  ...
</form>

Validation Errors

<label for="title">Post Title</label>
 
<input id="title"
  type="text"
  class="@error('title') is-invalid @enderror">
 
@error('title')
  <div class="alert alert-danger">{{ $message }}</div>
@enderror

@include

• php의 include 와 동일한 기능을 제공합니다.

@include('view.name')
@include('view.name', [전송할 변수] )
@include('view.name', ['page'=>$page] )

@includeIf

@includeIf('view.name', ['status' => 'complete'])

@each

@each('view.name', $jobs, 'job')