我是Laravel 的新手,我试图通过从另一个集合中检索到的一个 ID 来获取一个集合中的一个值。 我的函数返回 2 个集合: public function index() { $category = BlogCategory::all(['id', 'name']); $post = BlogPost::orderBy('id', 'desc')->take(14)->get(); return view('blog.index', ['...
浅谈laravel框架sql中groupBy之后排序的问题 最近在用框架给公司App写接口时,碰到了一个棘手的问题:对查询结果进行排序并进行分页(进行了简略修改),下面是最终结果代码: $example = Example::select(DB::raw('max...(id) as some_id,this_id')) - where('id', $id) -groupBy('this_id') - orderBy('...
sortByDesc(callable|string $callback, int $options = SORT_REGULAR) Sort the collection in descending order using the given callback. Enumerable sortKeys(int $options = SORT_REGULAR, bool $descending = false) Sort the collection keys. Enumerable sortKeysDesc(int $options = SORT_REGULAR)...
In this example i will explain you how to use laravel collection uniuqe and i will give you some example that will help you to delete duplicates records from collection in laravel. Let's see bellow one by one example with output: Example 1: public function index() { $myColle...
public$games;protected$rules= []; ...publicfunctionmount(){$now=Carbon::now();$games=Game::where('start','>',$now)->orderBy('start','ASC')->get();$games=$games->groupBy(function($item) {return$item->start->format("Y-m-d H:i:s"); ...
A set of useful Laravel collection macros This repository contains some useful collection macros. Spatie is a webdesign agency based in Antwerp, Belgium. You'll find an overview of all our open source projects on our website. Support us We invest a lot of resources into creating best ...
laravel中collection的作用是什么 今天就跟大家聊聊有关laravel中collection的作用是什么,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。 pluck public functiongetDeductCourse() { return TeacherFinanceLogModel::select(['order_id','period'])->where('...
在Builder.php文件(项目名称/laravel/vendor/laravel/framework/src/Illuminate/Datamybatis collection 一对多关联查询,单边分页的问题总结! 若想直接通过sql实现多级关联查询表结构得有2 个必不可少的字段:id ,parentId,levelId id:主键id, parentId:父id levelId:表示第几级(表本身关联查询的时候需要用到,不然会...
"AngularFirestoreCollection"类型上不存在属性"orderBy"<DocumentData> 这意味着你正试图在 AngularFirestoreCollection 上使用 orderBy 方法,但该方法并不存在。 问题描述 AngularFirestoreCollection 是 Angular 中用于访问云端 Firestore 数据库集合的类。它允许你对集合进行 CRUD 操作,并获取实时或静态的数据。然而,在...
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