Laravel "Trying to access array offset on value of type null" error when trying to render markdown

I'm trying to show some changelog content on my Laravel page with this markdown plugin, but it always throws this error: Trying to access array offset on value of type null

@markdown($changelog->content)

The content is not null, all the content is there and it gets created and stored properly.

I found out about @isset but no matter how I use it, it still shows that error.

@isset($changelog->content)
  @markdown($changelog->content)
@endisset

Note: I'm using Laravel 5.8, this is an older project.

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FatalThrowableError in Call to a member function get_one() on null

i have some laravel code like this

public function update_password(Request $request)
    {
        $data = array(
            'password_current' => $request->input('password_current'), 
            'password_new' => $request->input('password_new'),
            'password_new_confirmation' => $request->input('password_new_confirmation'), 
            );

        $rules = [
            'password_current' => 'required',
            'password_new' => 'required|confirmed',
            'password_new_confirmation' => 'required',
        ];

        $validator = Validator::make($data, $rules);
        if ($validator->fails()) {   
            return redirect()->action('Editor\ProfileController@edit_password')->withInput()->withErrors(['New password confirmation failed!']);
        } else {
            
            $user = $this->UserRepository->get_one(Auth::user()->id);
            
            if(Hash::check($request->input('password_current'), $user->password))
            {
                $this->UserRepository->change_password(Auth::user()->id, $request->input('password_new'));

                return redirect()->action('Editor\ProfileController@show');
            } else {
                return redirect()->action('Editor\ProfileController@edit_password')->withInput()->withErrors(['Current password mismatch!']);
            }
        }
    }

but when i run the program, the program notification is FatalThrowableError, Call to a member function get_one() on null. i change with other script in google but no one is work.

$user = $this->UserRepository->get_one(Auth::user()->id);

anyone ever had this problem?

I try to change script like

use Auth;
$user_id = Auth::user()->id;

and still not work.

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Need to replace a static value in all controllers even in whole project. Is there any way that i can change this value from only a single function?

I have a pre-build project and there is some static value passed in the whole project. Instead of looking in every controller and blade file, I want to change these static values replace to the values from the env file.

**What I tried: ** In the bootstrap folder in the app.php file, I created a function for replacing static values by using str_replace() and call this function in the same file. This is not working.

I don't want to change the static value in the controller, But on the run time.

<?php

/*
|--------------------------------------------------------------------------
| Create The Application
|--------------------------------------------------------------------------
|
| The first thing we will do is create a new Laravel application instance
| which serves as the "glue" for all the components of Laravel, and is
| the IoC container for the system binding all of the various parts.
|
*/

$app = new Illuminate\Foundation\Application(
    $_ENV['APP_BASE_PATH'] ?? dirname(__DIR__)
);

/*
|--------------------------------------------------------------------------
| Bind Important Interfaces
|--------------------------------------------------------------------------
|
| Next, we need to bind some important interfaces into the container so
| we will be able to resolve them when needed. The kernels serve the
| incoming requests to this application from both the web and CLI.
|
*/

$app->singleton(
    Illuminate\Contracts\Http\Kernel::class,
    App\Http\Kernel::class
);

$app->singleton(
    Illuminate\Contracts\Console\Kernel::class,
    App\Console\Kernel::class
);

$app->singleton(
    Illuminate\Contracts\Debug\ExceptionHandler::class,
    App\Exceptions\Handler::class
);

/*
|--------------------------------------------------------------------------
| Return The Application
|--------------------------------------------------------------------------
|
| This script returns the application instance. The instance is given to
| the calling script so we can separate the building of the instances
| from the actual running of the application and sending responses.
|
*/


function replaceHello()
{
    str_replace("world","all.","Hello world");
}
replaceHello();

return $app;

This function is for replace world from the hello world to hello all in whole project. Is there any way to do this?

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Lumen queue throwing MySQL server has gone away error

I'm calling a common function from Lumen queue and cron job. During user interaction this function is called from queue ( async purpose ), if something goes wrong with queue execution for example lock wait timeout etc. I have a cron job which is scheduled for every 15 mins to process older transactions. There is no issue when cron is executed but whenever queue is executed MySQL server has gone away error is occurring. Error is occurring at the line DB::connection()->getpdo()->exec('BEGIN');

I did some research on internet, those articles are saying this kind of error will raise when we try to insert large data and we can avoid this error my increasing max_allowed_packet. But error is occurring at beginning line itself, I'm not trying to insert large data ( mostly it should be in KBs ) and moreover same function is working when cron executes for every 15 mins. Following are my code snippets,

public function processTransaction($data)
{
    try {
        $this->validate($data);
        DB::connection()->getpdo()->exec('BEGIN');
    // Save & Update DB 
        DB::connection()->getpdo()->exec('COMMIT');
    } catch (Exception $ex) {
        DB::connection()->getpdo()->exec('ROLLBACK');
        Log::error($ex->getMessage() . '-' . $ex->getTraceAsString());
        throw new AppException($ex->getMessage(), $ex->getCode());
    }
}

Above is the initial version I tried, in this case error was at ROLLBACK statement. Later I had updated to following

public function processTransaction($data)
{
    try {
        $this->validate($data);
        DB::connection()->getpdo()->exec('BEGIN');
    // Save & Update DB 
        DB::connection()->getpdo()->exec('COMMIT');
    } catch (Exception $ex) {
        Log::error($ex->getMessage() . '-' . $ex->getTraceAsString());
        try {
            DB::connection()->getpdo()->exec('ROLLBACK');
        } catch (Exception $ex) {
            Log::error($ex->getMessage() . '-' . $ex->getTraceAsString());
        }
        throw new AppException($ex->getMessage(), $ex->getCode());
    }
}

Here the error is at BEGIN statement and PDO exception error code is in string, which is also creating the issue for argument 2 AppException (extends Exception class), which excepts argument 2 as integer. I think PDO exception issue can be handled by separately catching PDO exception but I want to know why MySQL server has gone error is getting.

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How can i use redirect()->route('test', $id) after create a data in Laravel? [closed]

The store function

The Route

I try to store a data to database and than i want to redirect the page with the created data ID. I use return redirect()->route('test', $id) but its not working.

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how can I handle errors in laravel mail

Laravel app sending mails with mandrillapp and Mailchimp. it's working.

How do you handling errors? How can I know is the mail sent or not?

Mail is send with Mail::sent() in try/catch block.

count(Mail::failures) is always 0. I can't find what type or error is needed to show in failures[]?

I can catch

Swift_RfcComplianceException

and

Swift_TransportException

I read the mailchimp documentation but can't find some return of API which says about mail status.

Any idea or suggestion about error handling?

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How to get the result with these time intervals in php

I'm using a time clock system which, by default, records only the employee's entry and exit times. I'm customizing it so that it's possible to also record break times but I'm having trouble getting the break time to be subtracted from the total time. This snippet of code is used to register the time between the check-in and check-out:

$time1 = Carbon::createFromFormat("Y-m-d H:i:s", $timeIN); 
$time2 = Carbon::createFromFormat("Y-m-d H:i:s", $timeOUT); 
$th = $time1->diffInHours($time2);
$tm = floor(($time1->diffInMinutes($time2) - (60 * $th)));
$totalhour = ($th.".".$tm);

The variable ($totalhour) receives the total value between the input register and the output register. It sends to the database in H.i format (hour.minutes), then another page searches for this information in the database and replaces the point (.) with (hr). Based on this code, I did the same to get the interval start and end timestamps. I was able to get the time between the start time and end time interval with the code below:

$breakstart = table::attendance()->where([['idno', $idno]])->value('breakstart');
$breakend = table::attendance()->where([['idno', $idno]])->value('breakend');
$one = Carbon::createFromFormat("H:i:s", $breakstart); 
$two = Carbon::createFromFormat("H:i:s", $breakend);
$breakone = $one->diffInHours($two);
$breaktwo = floor(($one->diffInMinutes($two) - (60 * $breakone)));
$totalbreak = $breakone.".".$breaktwo;

The $totalbreak variable stores the time taken between the start and end of the break. I was also successful in getting the time between this interval. Now, I need the total time to be done by subtracting the time obtained from the record at the beginning of the interval to the record at the end of the interval. I did with this code and got good result up to a point. Could you give me tips on how to get an assertive result in this case?

$totalhour = ($th.".".$tm) - ($totalbreak);

I tried to get the total time by subtracting the break time, but without success.

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