Custom dynamic Twig template that extends Twig_Template - php

Question

TL;DR: I am currently struggling with the idea how to elegantly generate CRUDs/GRID using Twig.
Long story:
I have a Phalcon app with AngularJs, templating system is Twig.
PHP is suppose to prepare a template for CRUD that contains:
List od entities, table that contains proper headers, columns, row items, action buttons
Simple and advanced search
Mass actions block
Main buttons - Add/Import/Export etc.
AngularJs is responsible for:
Paginating results in 2 modes: Ajax Loaded entities, All entities at once
Changing number of entities per page
Displaying various forms in modals - Add/Edit/Import
Filtering entities - simple and advanced search
Everything is working right now but I am not particularly fond of how it works.
For example a simple entity with few fields needs a following template:
{% extends 'index.twig' %}
{% block containerAttr %}ng-controller="InventoryController as ctrl"{% endblock %}
{% set ctrlName = 'ctrl' %}
{% set columnWidth = 'col-xs-12' %}
{% set tableClass = 'table table-bordered table-striped table-hover' %}
{% block header %}
{% include '#crud/crud/header.twig' %}
{% endblock %}
{% block content %}
{% embed '#crud/crud/main-box.twig' %}
{% block tableHeader %}
{% autoescape false %}
{{ crud.tableHeader('Id', 'id') }}
{{ crud.tableHeader('Nazwa', 'name') }}
<th class="col-xs-1">Actions</th>
{% endautoescape %}
{% endblock %}
{% block tableRow %}
<td ng-bind="e.id"></td>
<td ng-bind="e.name"></td>
{% endblock %}
{% endembed %}
{% embed '#crud/crud/form.twig' %}
{% block modalBody %}
{% autoescape false %}
<div class="row">
{{ crud.input('ctrl.entity.name', 'Name', 12) }}
</div>
{% endautoescape %}
{% endblock %}
{% endembed %}
{% embed '#crud/crud/upload.twig' %}{% endembed %}
{% embed '#crud/crud/advancedSearch.twig' %}{% endembed %}
<script>
window.xdata = {{ xdata | json_encode | raw }};
</script>
{% endblock %}
crud in this template is responsible for generating form fields compatible with AngularJs.
Idea is: To create new CRUDs/Grids with the least amount of work required. While still giving a room for some flexibility.
Right now to make a CRUD/Grid inside my application there is a really little work required:
PHP Controller needs to contain only one line:
class SubCategoryController extends CrudBase
{
protected $entityClass = InventoryCategory::class;
}
Thanks to extending it is really easy to customize every part of it.
Model needs to have just a few fields:
class InventoryCategory extends ModelBase
{
/** #var integer */
public $id;
/** #var string */
public $name;
public function initialize()
{
$this->setSource('inventory_subcategory');
$this::setup(['castOnHydrate' => true]);
}
}
Even the AngularJs controller contains only URLs and one line:
class InventoryCategoryController extends CrudBase {
constructor($injector, $scope) {
super($injector, $scope);
this.urlSave = '/inventory/category/save';
this.urlImport = '/inventory/category/import';
this.urlExport = '/inventory/category/export';
this.urlDelete = '/inventory/category/delete';
this.init({
advancedSearch: false
});
}
}
angular.module('App').controller('InventoryCategoryController', InventoryCategoryController);
Yes I use ES6, application is not compatible with older browsers anyways and it is admin panel so I do not care about older browsers.
But now only templates remains a tedious work to copy it over and change it. Not to mention they do look pretty ugly.
So my idea was to use Annotation Reader (Phalcon has one) to read fields from Model, then transform it into a base configuration, check if there is custom configuration in json and merge it. Then based on configuration, generate this whole template on the fly.
So the grand question is:
I was wondering if I can create some class that extends Twig_Template to generate this template on the fly?
I have seen Twig cache and it should be pretty easy but then how can i use it? How can i render it? Will extend still work?