Level 102
First of try using this if you wan to use Process
$process = Process::fromShellCommandline('python C:\Simone\Università\Smart IoT Devices\Lab_Raspy\Bluetooth\prova.py');
Feb 24, 2022
32
Level 1
Execute python script from laravel
I should execute a script in python from a view in Laravel after pressing a button. In the controller I put the code to execute the script and that is:
public function scan() {
$process = new Process(['C:\Simone\University\Smart IoT Devices\Lab_Raspy\Bluetooth', 'prova.py']);
$process->run();
if (!$process->isSuccessful()) { throw new ProcessFailedException($process); }
return redirect()->route('device');
}
but when I press the button in the view I get this error:
The command "'C:\Simone\University\Smart IoT Devices\Lab_Raspy\Bluetooth' 'prova.py'" failed. Exit Code: 127(Command not found) Working directory: /var/www/html/public Output: ================ Error Output: ================ sh: 1: exec: C:\Simone\University\Smart IoT Devices\Lab_Raspy\Bluetooth: not found
The view is set as follows:
@extends('backend.layouts.app')
@section('content')
@csrf
<button type="submit" class="btn btn-ghost-primary" id="scanner">Scan Device</button><br><br>
<tr>
<th scope="col">ID</th>
<th scope="col">USERNAME</th>
<th scope="col">MAC ADDRESS</th>
</tr>
@foreach ($data as $item)
<tr>
<th scope="row">{{$item->id}}</th>
<td>{{$item->USERNAME}}</td>
<td>{{$item->MAC_ADDR}}</td>
<td>
<a href="/admin/singleDevice/{{ $item->id }}" class="btn btn-primary">Select</a>
</td>
</tr>
@endforeach
I also tryied with the command
$process = shell_exec('python C:\Simone\Università\Smart IoT Devices\Lab_Raspy\Bluetooth\prova.py 2>&1');
return redirect()->route('backend.auth.user.device');
And the error change in:
Symfony\Component\Routing\Exception\RouteNotFoundException Route [backend.auth.user.device] not defined.
And my route is:
Route::get('device' ,[DeviceController::class, 'index'])->name('devices');
Route::get('dict', [DeviceController::class, 'visualizeData'])->name('dict');
Route::get('singleDevice/{device}', [DeviceController::class, 'singleDev'])->name('singleDev');
Route::get('scan', [DeviceController::class, 'scan'])->name('scan');
Where am I going wrong?
Level 1
@Sinnbeck This redirects me to a blank page with URL http://localhost:14000/admin/scan?_token=D5KYDCrIo3d6ZvUqzCIDp6a43jyJ2sVWEMAMruN2 and the script does not start
Level 102
@Simone94 That line in itself does a redirect? That is very strange! So if you remove the $process code, you get redirected to the proper page?
Level 1
@Sinnbeck If I use your line of code it redirects me to that URL I wrote you, if I use my line of code it tells me it can't find the route
Level 102
@Simone94 I cannot read the code in your first post as it isnt formatted. Can you show what you have now, and format it properly? https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/creating-and-highlighting-code-blocks
Level 1
@Sinnbeck this is the function where I try to call the script
public function scan()
{
$process = Process::fromShellCommandline('python C:\Simone\Università\Smart IoT Devices\Lab_Raspy\Bluetooth\prova.py');
return redirect()->route('backend.auth.user.device');
}
This is the routes:
Route::get('device' ,[DeviceController::class, 'index'])->name('devices');
Route::get('dict', [DeviceController::class, 'visualizeData'])->name('dict');
Route::get('singleDevice/{device}', [DeviceController::class, 'singleDev'])->name('singleDev');
Route::get('scan', [DeviceController::class, 'scan'])->name('scan');
Level 102
@Simone94 You still need to run the command
public function scan()
{
$process = Process::fromShellCommandline('python C:\Simone\Università\Smart IoT Devices\Lab_Raspy\Bluetooth\prova.py');
$progress->run(); //run the command
return redirect()->route('backend.auth.user.device');
}
Level 1
@Sinnbeck yes sorry, I forgot it. However I get this error: Route [backend.auth.user.device] not defined. A clarification, in my form in the view I use the GET method as in the route, is this correct or should I use the POST method?
Level 102
@Simone94 That is up to you. You can always change it. Personally I would probably use POST
Can you show the backend.auth.user.device route?
Level 1
@Sinnbeck I can't edit correctly the view so I use Imgur. Here the link of the image https://imgur.com/a/rxbBBYo
Level 102
@Simone94 That is a view, not a route. You posted several above, but none with that name
Did you mean to redirect to devices ?
return redirect()->route('devices');
Level 1
@Sinnbeck sorry, the route is this:
Route::get('scan', [DeviceController::class, 'scan'])->name('scan');
Level 1
@Sinnbeck Ok, now the redirect works, but the script doesn't start anyway
Level 102
@Simone94 Good start. Now add back the error handling
if (!$process->isSuccessful()) {
throw new ProcessFailedException($process);
}
Level 1
@Sinnbeck no error caught, but still does not work
Level 102
@Simone94 How do you know if it works? Does the command return something or does it change something on a seperate system?
Level 1
@Sinnbeck I usually use PyCharm to run the script, currently I don't see any changes on PyCharm. I expect to see the run icon light up like it does when I manually run the script
Level 102
@Simone94 Not sure it does if you run it via php. Instead you could make it write to a log file or similar so you can see if it was called correctly.
Level 1
@Sinnbeck I also see it another way. The script should send me some data on a DB that I visualize with the views and this doesn't happen.
Level 1
@Sinnbeck another clarification, if I put the POST method on the route and the view form, I get the error:
The command "python C:\Simone\Università\Smart IoT Devices\Lab_Raspy\Bluetooth\prova.py" failed. Exit Code: 127(Command not found) Working directory: /var/www/html/public Output: ================ Error Output: ================ sh: 1: python: not found
Level 102
@Simone94 Try giving it the full path to the python executable
Level 1
@Sinnbeck is that the full path
Level 102
@Simone94 The full path is something like (check if the path is correct before trying)
C:\Users\Simone\AppData\Local\Programs\Python\Python39.exe
Level 1
@Sinnbeck I only go as far as Programs...I don't have Python
Level 102
@Simone94 you don't have python installed? Sorry if the path is wrong. I don't have a windows computer, so I can't check it
Level 1
@Sinnbeck yes I have Python installed. if I look for the full path I find it here but I don't know which exe I have to select https://imgur.com/a/VhiL3Z9
Level 102
@Simone94 Try using the executalbe finder https://symfony.com/doc/current/components/process.html#finding-an-executable
$executableFinder = new ExecutableFinder();
$path = $executableFinder->find('python');
dd($path);
Level 1
@Sinnbeck i did it but i had to use python3 and this is the result: "/usr/bin/python3"
Level 102
@Simone94 How is php run? Inside a virtual machine or something? That is a linux path
Level 1
@Sinnbeck the script is inside the raspberry that i can see thanks to Pycharm that i have connected to the raspberry...so i have a "virtual" folder on my PC while the real one is on the raspberry
Level 1
@Sinnbeck Can I still run my script even though it's on the raspberry?
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