slugger | CakePHP plugin that automatically turns boring

I'm facing a problem with persisting OneToMany relationship data into the database. Following is the Code:

Item Type

I am trying to save images when dropped over a canvas (saving the position it is dropped to, it source ...etc). To acheive this each image is considered an object that has a saveObject methode that will POST a formData object threw an XMLHttpRequest to a Symfony5 controller, that will receive the formData in a symfony Form. The symfony form is binded to the the entity representing the objects in the canvas, and should save the formData content to the database on submit.

The problem I am facing is that the controller seem's not to consider the form as submitted. I have checked : the formData object does contain all the data before the XMLHttpRequest, but on the controller side all the fields seem to be set to null.

this is the saveObject methode :

I got a class use to upload file as service like symfony documentation. https://symfony.com/doc/current/controller/upload_file.html#creating-an-uploader-service

I use symfony 5.

When i declare service in main config/services.yaml, this work.

But i have a bundle for file management and i want to put service declaration in this bundle : App/AD/ExplorerBundle/Resources/config/services.yaml.

When i do that this doesn't work anymore.

I have error

Cannot resolve argument $fileUploader of "App\AD\ExplorerBundle\Controller\FileController::addAction()": Cannot autowire service "App\AD\ExplorerBundle\Service\FileUploader": argument "$targetDirectory" of method "__construct()" is type-hinted "string", you should configure its value explicitly.

I don't understand why, because _defaults autoconfigure and autowire = true

I test cache:clear, reload server, but nothing work.

Any help will be apreciate

Edit : my bundle extension: in AD\ExplorerBundle\DependencyInjection

Trying to write type definitions for github-slugger to fix the following error.

Could not find a declaration file for module 'github-slugger'. '/Users/sunknudsen/Sites/sunknudsen/sunknudsen-website/node_modules/github-slugger/index.js' implicitly has an 'any' type. Try npm install @types/github-slugger if it exists or add a new declaration (.d.ts) file containing declare module 'github-slugger'; TS7016

I only need to cover the slug function.

i have list structure look like this :

I have seen in a lot of the material-ui code that they use pseudo selectors in their react styled components. I thought I would try to do it myself and I cannot get it to work. I'm not sure what I am doing wrong or if this is even possible.

I am trying to make some css that will offset this element against the fixed header.

I am trying to add comment fields to my post-detail view. But as soon i add redirect url after calling save(). This gives me error something like this.

Reverse for 'post-detail' with keyword arguments '{'kwargs': {'slug': 'long-established-fact-that-a-reader-will'}}' not found. 1 pattern(s) tried: ['post/(?P[^/]+)/$']

this is my code

posts/views.py

I want to know how to make category page view using class based view I know how to make this in function based view by using get_object_or_404(category, slug=None) But I am confused how to do this it in class based views. I tried to google this but I am unable to find anything related to this in class view.

I know I could have used function based view but I have used class based view in whole project so I thought to use them here as well

my code

models.py

I have a Post and Category model. Here I want to list posts By category. Category name will be title of the page and post with same category will be rendered under this. And I have no idea of how to do this.

This is my model