创建模型 post and user 以及 users , posts ,user_post(favorities)测试数据 在此可以看上一篇中的数据,本次测试数据利用的上一篇的数据.detach and attach method 在很多地方 都可以用到 而且非常方便,不用自己查询数据库后在判断是否存在,再添加数据. attach and detach method 在关联表中添加数据 : Route::get('/', function () { $post = \App\Pos
eloquent-attach-detach-sync-fires-any-event I have a laravel project, and I need to make some calculations immediately after I save a model and attach some data to it. Is there any event that is triggered in laravel after calling attach (or detach/sy
Scope The screen utility provides a way to run a command on a Linux system, detach from it, and then reattach later. This is particularly handy if you have a long-running process that you want to keep running even after you log out and still have the
1,Shell bash > awk '{print {NF}}' file 此时想修改操作命令可参照下面快捷方式 ctrl a 光标移动到命令最前面 ctrl e 光标移动到命令最后面 ctrl f 光标向右移动一个字符 ctrl b 光标向左移动一个字符 alt b 光标向左移动一个单词 alt f 光标向右移动一个单词 ctrl u 从光标所在处开始删除字符,直到行首ctrl k 从光标所在处开始删除字符,直到行尾ctrl w 删除光标前的一个单词ctrl y 恢复删除的字符ctrl l
Introduction In the software development life cycle, testing and defect fixing take more time than actually code writing. In general, debugging is a process of finding out defects in the program and fixing them. Defect fixing comes after the debuggin
