$users = User::with(array('posts' => function($query) { $query->where('title', 'like', '%first%'); }))->get(); 在这个例子中,我们预先加载用户的文章,但只限于文章的 title 字段中包含单词 "first" 的文章:延迟预先加载从一个已存在的模型中直接预先加载相关的模型也是可能的。这在动态的...
Append attributes to query when building a query. from HasAttributes $this setAppends(array $appends) Set the accessors to append to model arrays. from HasAttributes bool hasAppended(string $attribute) Return whether the accessor attribute has been appended. from HasAttributes array getMutated...
nginx 部署server { listen 80; server_name example.com; root /example.com/public; add_header X-Frame-Options "SAMEORIGIN"; add_header X-XSS-Protection "1; mode=block"; add_header X-Content-Type-Options "nosniff"; index index.html index.htm index.php; charset utf-8; location / { try_...
分页时传递GET参数 $users->appends(Request::except('page'))->links() 监听SQL DB::enableQueryLog(); 执行语句 dd(DB::getQueryLog()); TINKER 使用laravel提供的tinker 可以方便的在命令行进行调试。 进入tinker环境 php artisan tinker 新增用户练习 >>> use \App\User ...
//换这种写法,就会有各种方法提示了。User::query()->where('id',2); 如果要返回表中不存在的字段,有没有快捷方法? ORM模型的, appends 属性可以解决这个问题。 classUserextendsModel{protected$appends=['is_breakfirst'];publicfunctiongetIsBreakFirstAttribute(){return$this->attributes['name']=='早餐';}...
$users = User::popular()->orWhere(function (Builder $query) { $query->active(); })->get();However, since this can be cumbersome, Laravel provides a "higher order" orWhere method that allows you to fluently chain scopes together without the use of closures:$users = App\Models\User::...
If you need to process a lot (thousands) of Eloquent records, using the chunk command will allow you to do without eating all of your RAM:User::chunk(200, function($users){ foreach ($users as $user) { // }});The first argument passed to the method is the number of records you ...
appropriately named model query file appropriately-named view folder index view create view edit view show view Vue.js component file The make:foundation command also appends to the following files: routes.php ModelFactory.php ApiController (if it already exists) components.js That’s a lot of ...
namespace Illuminate\Database\Eloquent;classBuilder{publicfunction__construct(QueryBuilder $query){$this->query=$query;}publicfunctionwhere($column,$operator=null,$value=null,$boolean='and'){if($columninstanceofClosure){$query=$this->model->newQueryWithoutScopes();$column($query);$this->query-...
When we apply helper methods on eloquent collections, they do not query the database. All the results that we want to get from the database are first taken and then we use collection methods to filter and modify them without any querying to the database. ...