Template Collector

Captures template/view rendering with optional timing, output capture, parameters, and duplicate detection. Works with any template engine (Twig, Blade, PHP templates, etc.).

What It Captures

Field	Description
template	Template file path or name
renderTime	Rendering duration in seconds (optional, 0 if not measured)
output	Rendered output HTML (optional, empty if not captured)
parameters	Parameters passed to the template (optional)

Data Schema

{
    "renders": [
        {
            "template": "home/index.html.twig",
            "renderTime": 0.0045,
            "output": "",
            "parameters": []
        },
        {
            "template": "/app/views/user/profile.php",
            "renderTime": 0,
            "output": "<div class=\"profile\">...</div>",
            "parameters": {"user": "object@App\\Entity\\User#42"}
        }
    ],
    "totalTime": 0.0045,
    "renderCount": 2,
    "duplicates": {
        "groups": [],
        "totalDuplicatedCount": 0
    }
}

Summary (shown in debug entry list):

{
    "template": {
        "renderCount": 2,
        "totalTime": 0.0045,
        "duplicateGroups": 0,
        "totalDuplicatedCount": 0
    }
}

Contract

Two entry points depending on available data:

use AppDevPanel\Kernel\Collector\TemplateCollector;

// Template engines with timing (Twig, Blade)
$collector->logRender(
    template: 'home/index.html.twig',
    renderTime: 0.0045,
);

// View systems with output capture (Yii views, PHP templates)
$collector->collectRender(
    template: '/app/views/user/profile.php',
    output: '<div class="profile">...</div>',
    parameters: ['user' => $userObject],
    renderTime: 0.003, // optional
);

INFO

TemplateCollectorAppDevPanel\Kernel\Collector\TemplateCollectorCaptures template/view rendering with optional timing, output, parameters, and duplicate detection.final Kernel · class · implements SummaryCollectorInterface implements SummaryCollectorInterfaceAppDevPanel\Kernel\Collector\SummaryCollectorInterfaceSummary data collector responsibility is to collect summary data for a collector. Summary is used to display a list of previous requests and select one to display full info. Its data set is specific to the list and is reduced compared to full data collected in {@see CollectorInterface}.Kernel · interface · extends CollectorInterface, depends on TimelineCollectorAppDevPanel\Kernel\Collector\TimelineCollectorCollects Timeline data during application lifecycle.final Kernel · class · implements SummaryCollectorInterface, and uses DuplicateDetectionTraitAppDevPanel\Kernel\Collector\DuplicateDetectionTraitDetects duplicate items in collector data by grouping them by a key.Kernel · trait.

How It Works

Framework adapters hook into the template/view rendering system:

• Symfony: Twig profiler extension measures render time, calls logRender()
• Yii 3: ViewEventListenerAppDevPanel\Adapter\Yii3\Collector\View\ViewEventListenerListens to Yii view render events and feeds normalized data to the framework-agnostic Kernel TemplateCollector.final Adapter/Yii3 · class listens to view render events, calls collectRender()
• Yii 2: View::EVENT_BEFORE_RENDER + EVENT_AFTER_RENDER with per-file timer stack — captures timing, output, and parameters in one call

Debug Panel

• Summary cards — total templates rendered, aggregate render time (when timing available)
• Template list — all rendered templates with file paths and render time
• Output preview — rendered HTML output (expandable, when captured)
• Parameters — expandable view parameters (when captured)
• Duplicate detection — highlights repeated renders of the same template (N+1 issues)
• Flat / Grouped views — toggle between all renders and grouped duplicates