Database/Models & Latte plus ErrorPresenter

I've got myself stuck in a number of situations. I read the documentation & had a look in this forum.
Either documentation is so brief or not available & in case of forum it seemed recent posts in English is not in a great amount. As a beginner with the nette framework (3.*), there's a chance that I might have mistakenly claimed something. Perdon this. But my points are:

A. Controls & Latte

As per the Documentation we can pass variable to the controls which is fine & seemed impressive at first. Then the context-aware latte escaping could not be smart enough to get me through. Take a look at this example:

	File: SomeFormFactory.php
	.
	.
	.
	.

	public function __construct(FormFactory $factory, MyModel $model)
	{
		$this->factory = $factory;
		$this->dataProviderModel = $data;
		// Even I've tried to inject request $request, presenter $presenter to be able to set flash & get params
	}

	public funciton create(callable $onSuccess, array $array): Form
	{
		// say, we need an array $array to be passed for a reason
		// other codes...

		// We may need request $request param

		// We may need to set flash message & redirect (idk, it's a proper way)

		// We may need to access models/services here.
	}
	?>

So, registered it in the services section of neon. Injected whatever we need on the form in the. It returns me a bunch of errors.

1. {control someForm $array} the array gets converted to string, I found zero way to solve that.
even I tried to achieve this by creating createComponentSomeForm(array $array), it is'nt an array anymore after passing it from latte. |noescape is not allowed in control macro.
2. So I thought I can get that $array to from model, the model need context $database. I can't recall the exact error (maybe I'll post later here) but it fails (maybe due to other dependacy of the model) (I'll clarify later hopefully).
3. No I can't have flashes here, tried in different way. Am I right? But what if I need it?

B: Let's talk about other thing. Imagine we need nested categories (well at least 3 level deep). I think to achieve this I need a database design like this (making it simple):

id 			- int, not null, auto-increment, primary
parent_id 	- int, null, default: null
title		- varchar, not null

The reason I'm not choosing another table is because I'll need 3 tables to get 3 levels deep nesting & it will be much complex. What if I need more nesting levels?

So, Nette database core/explorer can get it using “where parent_id = $parentId” but what I would I do in latte?

I've got a model:
getCats() → returns cats ActiveRow (where parent_id = null)
getSubCats($childId) → checks if it has parent & returns sub cats (where id = $child->parent_id)

	so in latte:
	{foreach $cats as $cat}
		{$cat->title}
		{* how do I access model/database *}
		way1: {php $sub = $this->model->getSubCats($cat->id) : not working - can't found the model
		way2: {$cat->related(cats.parent_d)} silly I know, but not works
	.
	.
	.

I don't know how to achieve this. I need it in various situation. Should I try keeping model->getSubCats($childId) directly in the presenter? Can I use then $this->getSubCats($child->parent_id) from latte? What about DRY/separation of concern then?

C: Error & Error4xx presenters seemed a little more confusing. Can't it be simplified? Perhaps a easy way to set it up? Can the error & error4xx be merged together? How do I set it up if I map the app for multi module structure?

Anyway, It's a long message, I might have missed to provide all necessary information. Hopefully I'll. How do I overcome these situations?

Last edited by farhanianz (2020-06-02 10:35)