kingshark

kingshark

Member Since 1 Year Ago

Chengdu, China

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Level 1
3,960 XP
Oct
18
2 days ago
Activity icon

Replied to Get Details Using Foreignkey Using Another Table Foreginkey

How do you want to display the data?

if you want uni data nested into each program like this:

[{id:x, program: {id: y, uni: {id: z} } }, ...]

then just tblBatch::with('program.univesity')->get();

Activity icon

Started a new Conversation Can I Observe / Listen To Model's Save-and-commited Event?

Now I'm using Model Observer's saved function to write some process after a model saved, but I meet a problem:

If I wrapped $model->save() in a DB transaction, then after it executed but rollback afterwards (e.g: Exception ), the saved function would still be triggered.

How can I only catch it after the insert/update actually committed?

Oct
13
1 week ago
Activity icon

Commented on Explain How To Group Records By Relative Dates

Thanks very much, and to create a extended collection class is what I like the most.

Btw, after watching this video, my first thought was " if there are too many records in DB, is it appropriate to bring all to memory to group? ". However, I found in that case, we could not display data like this (group of labels and in each label put all records as cards) at all. So there are no absolute best solution, just up to the case.

Oct
09
1 week ago
Activity icon

Replied to Can We Go To Different Middleware Based On Current Middleware?

This question is not for a real use case, but I'm digging into Laravel's middleware and Pipeline design, I want to know how far we can go in current pipeline pattern and want to copy the idea in other cases.

Does pipeline pattern itself requires all valves be setup before invoke? If I want to implement a dynamic path way (same begin point, different path way and next road sometimes depend on previous result), what type of design I should consider?

Activity icon

Started a new Conversation Can We Go To Different Middleware Based On Current Middleware?

example:


class Middleware1
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        if (...) {
            // next middleware is Middleware2
        } else {
            // next middleware is Middleware3
        }

        // jump into next middleware
    }
}

Edit:

Sorry for not stating my full motivation here at first, now I state below:

This question is not for a real use case, but I'm digging into Laravel's middleware and Pipeline design, I want to know how far we can go in current pipeline pattern and want to copy the idea in other cases.

  • Does pipeline pattern itself requires all valves be setup before invoke?

  • If I want to implement a dynamic path way (same begin point, different path way and next road sometimes depend on previous result), what type of design I should consider?

Sep
02
1 month ago
Activity icon

Started a new Conversation Any Idea How To Effectively Manage Env/config Between Many Projects?

We have many projects and each has different environments (e.g dev/staging/production), this now makes env/config management a mess.

is there any good tools to help us to view/modify/push env in one place? or any good practice on this issue?

May
07
5 months ago
Activity icon

Started a new Conversation Can Anyone Explain Why This Usage Of FlatMap Works?


    public function authorsOfPostComments($posts)
    {
        $commentAuthors = [];
        
        foreach ($posts as $post){
            foreach ($post->comments as $comment){
                foreach ($comment->authors as $author){
                    if (! in_array($author, $commentAuthors)){
                        $commentAuthors[] = $author;
                    }
                }
            }
        }
        
        return $commentAuthors;
        
    }

this function can be simplified to:


    public function authorsOfPostComments($posts)
    {
        return $posts->flatMap->authors->unique();

    }

how does the flatMap of second code work?