欢迎各位兄弟 发布技术文章
这里的技术是共享的
首先建立一个简单的文章和标签表来演示 replicate()
方法的实用。
建立表和迁移文件
- # wanli @ wanlideMacBook-Pro in /Applications/MAMP/htdocs/iTest [20:14:03]
- $ php artisan make:model Models/article -m
- Model created successfully.
- Created Migration: 2016_06_16_121430_create_articles_table
- # wanli @ wanlideMacBook-Pro in /Applications/MAMP/htdocs/iTest [20:14:30]
- $ php artisan make:model Models/tag -m
- Model created successfully.
- Created Migration: 2016_06_16_121450_create_tags_table
文章数据结构
- <?php
- use Illuminate\Database\Schema\Blueprint;
- use Illuminate\Database\Migrations\Migration;
- class CreateArticlesTable extends Migration {
- /** * Run the migrations. * * @return void */
- public function up() {
- Schema::create('articles', function (Blueprint $table) {
- $table->increments('id');
- $table->string('title')->default('')->comment('文章标题');
- $table->text('content')->comment('文章内容');
- $table->timestamps();
- });
- }
- /** * Reverse the migrations. * * @return void */
- public function down() {
- Schema::drop('articles');
- }
- }
标签数据结构
- <?php
- use Illuminate\Database\Schema\Blueprint;
- use Illuminate\Database\Migrations\Migration;
- class CreateTagsTable extends Migration {
- /** * Run the migrations. * * @return void */
- public function up() {
- Schema::create('tags', function (Blueprint $table) {
- $table->increments('id');
- $table->string('name')->default('')->comment('标签名称');
- $table->timestamps();
- });
- }
- /** * Reverse the migrations. * * @return void */
- public function down() {
- Schema::drop('tags');
- }
- }
首先我们在文章表中插入一条数据:
- Article::find(1)->replicate()->save();
- dd(Article::all()->toArray());
在页面中显示:
如果要修改其中的一部分数据,只需要将复制出来的对象赋值给一个变量,然后改变其中的数据再 save()
就可以了:
- $article = Article::find(1)->replicate();
- $article->title = 'Laravel 复制数据并修改标题';
- $article->save();
- dd(Article::all()->toArray());
将文章的标签也一同复制,文章与标签之间的关系我就不展示了,这里直接贴代码:
- $article = Article::with('tags')->find(1);
- $clone = $article->replicate();
- // 复制关系
- $clone->push();
- foreach($article->tags as $tag)
- {
- $clone->tags()->attach($tag);
- }
OK,今天的小技巧就到这里了,
来自 https://blog.csdn.net/jined/article/details/110407982