WebOct 18, 2016 · 首先 firstOrCreate 的目的是在数据库没有对应条目的情况下,默认生成一个新实例并存储到数据库。 例如初始化程序配置: $config = … Web引言经过之前章节对于路由,控制器等知识做了很多的储备,接着我们开始与数据库交互,摆脱繁复且难以维护的SQL操作,laravel提供了MVC的M模型功能。本期我们开始讲模型中,如何插入新条目,或者更新既有条目。代码时间我们在构建一个hello world页面的时候,已经介绍了如何使用laravel的命令行脚 ...
Laravel firstOrCreate How to work Laravel firstorcreate? - EduCBA
WebAug 22, 2024 · 这个函数的返回值有两个,一个是操作的 model 实例,一个是是否是 created 的 布尔型数据model 除了name,这个字段,还有其他的字段,创建数据的时候,给不在查询条件内的字段,设置的默认值查询的条件必须是唯一的,否则会造成多条数据返回而报错,这 … http://hzhcontrols.com/new-1386305.html flights from okc to tucson
Laravel firstOrNew, firstOrCreate, firstOr, and …
WebOct 4, 2024 · According to firstOrCreate and your eager loading, he should either find and return the first model of Invoice where the arguments (first array) match with extra attributes as arrays, containing the relationships you've written, or create an Invoice with the values of your second argument.. Having that said, it shouldn't return an empty array, ever, unless … WebDec 4, 2024 · firstOrCreate方法是laravel框架中操作数据表很常用的一个方法,在某些场景下他将变得很有用可以极大的简化代码有这样一个场景:我希望去数据表中按条件查询一条 … WebfirstOrCreate() is different, and requires a different check. firstOrCreate() This function will either return the first record from the database, or create a new record in the database and return that. Since a newly created record would exist in the database, you can't check the exists property, because it'll be true in both instances. flights from okc to utah