public function store() {
    Article::create(Request::all());
    return redirect('articles');
  }

@extends('layout')

@section('content')
  <h1>Write a New Article</h1>

  <hr/>

  {{--使用我们添加的 illuminate\html 开源库--}}
  {!! Form::open(['url' => 'articles']) !!}
    <div class="form-group">
      {!! Form::label('title', 'Title:') !!}
      {!! Form::text('title', null, ['class' => 'form-control']) !!}
    </div>

    <div class="form-group">
      {!! Form::label('body', 'Body:') !!}
      {!! Form::textarea('body', null, ['class' => 'form-control']) !!}
    </div>

    <div class="form-group">
      {!! Form::label('published_at', 'Publish On:') !!}
      {!! Form::input('date', 'published_at', date('Y-m-d'), ['class' => 'form-control']) !!}
    </div>

    <div class="form-group">
      {!! Form::submit('Add Article', ['class' => 'btn btn-primary form-control']) !!}
    </div>

  {!! Form::close() !!}

@stop

<?php namespace App;

use DateTime;
use Illuminate\Database\Eloquent\Model;

class Article extends Model {

 protected $fillable = [
    'title',
    'body',
    'published_at'
  ];

  //属性设置其要遵守格式约定
  // set属性Attribute
  public function setPublishedAtAttribute($date) {
    $this->attributes['published_at'] = Carbon::createFromFormat('Y-m-d', $date)->hour(8)->minute(0)->second(0);
  }

}

 public function index() {
    //$articles = Article::latest('published_at')->get();
    $articles = Article::latest('published_at')->where('published_at', '<=', Carbon::now())->get();

    return view('articles.index', compact('articles'));
  }

  //设置scope，遵守命名规则
  public function scopePublished($query) {
    $query->where('published_at', '<=', Carbon::now());
  }

 public function index() {
    //$articles = Article::latest('published_at')->get();
    //$articles = Article::latest('published_at')->where('published_at', '<=', Carbon::now())->get();
    $articles = Article::latest('published_at')->published()->get();

    return view('articles.index', compact('articles'));
  }

  public function scopeUnpublished($query) {
    $query->where('published_at', '>', Carbon::now());
  }

 public function index() {
    //$articles = Article::latest('published_at')->get();
    //$articles = Article::latest('published_at')->where('published_at', '<=', Carbon::now())->get();
    //$articles = Article::latest('published_at')->published()->get();
    $articles = Article::latest('published_at')->Unpublished()->get();

    return view('articles.index', compact('articles'));
  }

  protected $dates = ['published_at'];