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Handling Multiple Asynchronous Events
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$begingroup$
I have a web application where users can uploads image documents.
Now, after a new document is uploaded into the system, it should:
1) Be optimized. (OCR)
2) Perform various rules on the OCR output.
For this, I rely on Events in Laravel.
I have registered below events for my model Document.php:
protected $dispatchesEvents = [
'created' => DocumentCreated::class, //Once document has been uploaded.
'updated' => DocumentUpdated::class, //Once OCR has been performed.
];
Now, for each event, I have also defined listeners.
This is my EventServiceProvider.php:
DocumentCreated::class => [
PerformOCROnDocument::class,
],
DocumentUpdated::class => [
ParseDocument::class,
],
So when a new document is created, it will:
1) Perform OCR on the document. This class PerformOCROnDocument will do various tasks.
Most importantly, PerformOCROnDocument will ultimately call:
$document->save();
Since I have defined updated on my Document model, once the save() method is called, it will trigger the next event: DocumentUpdated.
2) Now, ParseDocument will run, and do some various tasks as well.
Important:
The ParseDocument cannot run before PerformOCROnDocument has finished.
Now my question is: is this the correct way of doing this and handling events? Ultimately, my events will implement ShouldQueue so everything will be added to a queue and handled async.
Alternative solution
Now, what I could also do was to trigger an event inside PerformOCROnDocument, like this:
$document->save();
event(new OCRFinished($document));
And then in EventSerivceProvider.php, do like this:
OCRFinished::class => [
ParseDocument::class,
],
php laravel
asked 8 mins ago
oliverbjoliverbj
1212
$endgroup$
add a comment |
$begingroup$
I have a web application where users can uploads image documents.
Now, after a new document is uploaded into the system, it should:
1) Be optimized. (OCR)
2) Perform various rules on the OCR output.
For this, I rely on Events in Laravel.
I have registered below events for my model Document.php:
protected $dispatchesEvents = [
'created' => DocumentCreated::class, //Once document has been uploaded.
'updated' => DocumentUpdated::class, //Once OCR has been performed.
];
Now, for each event, I have also defined listeners.
This is my EventServiceProvider.php:
DocumentCreated::class => [
PerformOCROnDocument::class,
],
DocumentUpdated::class => [
ParseDocument::class,
],
So when a new document is created, it will:
1) Perform OCR on the document. This class PerformOCROnDocument will do various tasks.
Most importantly, PerformOCROnDocument will ultimately call:
$document->save();
Since I have defined updated on my Document model, once the save() method is called, it will trigger the next event: DocumentUpdated.
2) Now, ParseDocument will run, and do some various tasks as well.
Important:
The ParseDocument cannot run before PerformOCROnDocument has finished.
Now my question is: is this the correct way of doing this and handling events? Ultimately, my events will implement ShouldQueue so everything will be added to a queue and handled async.
Alternative solution
Now, what I could also do was to trigger an event inside PerformOCROnDocument, like this:
$document->save();
event(new OCRFinished($document));
And then in EventSerivceProvider.php, do like this:
OCRFinished::class => [
ParseDocument::class,
],
php laravel
asked 8 mins ago
oliverbjoliverbj
1212
$endgroup$
add a comment |
$begingroup$
I have a web application where users can uploads image documents.
Now, after a new document is uploaded into the system, it should:
1) Be optimized. (OCR)
2) Perform various rules on the OCR output.
For this, I rely on Events in Laravel.
I have registered below events for my model Document.php:
protected $dispatchesEvents = [
'created' => DocumentCreated::class, //Once document has been uploaded.
'updated' => DocumentUpdated::class, //Once OCR has been performed.
];
Now, for each event, I have also defined listeners.
This is my EventServiceProvider.php:
DocumentCreated::class => [
PerformOCROnDocument::class,
],
DocumentUpdated::class => [
ParseDocument::class,
],
So when a new document is created, it will:
1) Perform OCR on the document. This class PerformOCROnDocument will do various tasks.
Most importantly, PerformOCROnDocument will ultimately call:
$document->save();
Since I have defined updated on my Document model, once the save() method is called, it will trigger the next event: DocumentUpdated.
2) Now, ParseDocument will run, and do some various tasks as well.
Important:
The ParseDocument cannot run before PerformOCROnDocument has finished.
Now my question is: is this the correct way of doing this and handling events? Ultimately, my events will implement ShouldQueue so everything will be added to a queue and handled async.
Alternative solution
Now, what I could also do was to trigger an event inside PerformOCROnDocument, like this:
$document->save();
event(new OCRFinished($document));
And then in EventSerivceProvider.php, do like this:
OCRFinished::class => [
ParseDocument::class,
],
php laravel
asked 8 mins ago
oliverbjoliverbj
1212
$endgroup$
I have a web application where users can uploads image documents.
Now, after a new document is uploaded into the system, it should:
1) Be optimized. (OCR)
2) Perform various rules on the OCR output.
For this, I rely on Events in Laravel.
I have registered below events for my model Document.php:
protected $dispatchesEvents = [
'created' => DocumentCreated::class, //Once document has been uploaded.
'updated' => DocumentUpdated::class, //Once OCR has been performed.
];
Now, for each event, I have also defined listeners.
This is my EventServiceProvider.php:
DocumentCreated::class => [
PerformOCROnDocument::class,
],
DocumentUpdated::class => [
ParseDocument::class,
],
So when a new document is created, it will:
1) Perform OCR on the document. This class PerformOCROnDocument will do various tasks.
Most importantly, PerformOCROnDocument will ultimately call:
$document->save();
Since I have defined updated on my Document model, once the save() method is called, it will trigger the next event: DocumentUpdated.
2) Now, ParseDocument will run, and do some various tasks as well.
Important:
The ParseDocument cannot run before PerformOCROnDocument has finished.
Now my question is: is this the correct way of doing this and handling events? Ultimately, my events will implement ShouldQueue so everything will be added to a queue and handled async.
Alternative solution
Now, what I could also do was to trigger an event inside PerformOCROnDocument, like this:
$document->save();
event(new OCRFinished($document));
And then in EventSerivceProvider.php, do like this:
OCRFinished::class => [
ParseDocument::class,
],
php laravel
php laravel
asked 8 mins ago
oliverbjoliverbj
1212
asked 8 mins ago
oliverbjoliverbj
1212
asked 8 mins ago
oliverbjoliverbj
1212
asked 8 mins ago
oliverbjoliverbj
1212
asked 8 mins ago
oliverbjoliverbj
1212
1212
add a comment |
add a comment |
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