folderweb/docs/04-development/04-context-api.md

Context API

Context Class

Defined in app/context.php. Stores request state and plugin data.

Constructor Properties (readonly)

Property	Type	Access	Description
contentDir	string	$ctx->contentDir	Absolute path to content root
templates	Templates	$ctx->templates	Resolved template paths
requestPath	string	$ctx->requestPath	URL path with leading/trailing slashes removed
hasTrailingSlash	bool	$ctx->hasTrailingSlash	Whether original request had trailing slash

These use PHP 8.4 private(set) — readable but not writable from outside the class.

Exception: The language plugin modifies requestPath via reflection to strip the language prefix. This is an intentional framework-level operation.

Computed Properties

Property	Type	Description
navigation	array	buildNavigation($this) — lazy-computed on access
homeLabel	string	From root metadata.ini slug field, default "Home". Note: reads slug, not title — typically set to a short label like "Home" or "Hjem"

Plugin Data Store

$ctx->set(string $key, mixed $value): void
$ctx->get(string $key, mixed $default = null): mixed
$ctx->has(string $key): bool

Also supports magic property access: $ctx->foo = 'bar' / $val = $ctx->foo.

Built-in Context Keys (set by language plugin)

Key	Type	Set By	Description
currentLang	string	languages.php	Active language code (e.g., "en")
defaultLang	string	languages.php	Default language from config
availableLangs	array	languages.php	All configured language codes
langPrefix	string	languages.php	URL prefix: "" for default, "/no" for others
translations	array	languages.php	Merged translation strings for current language

Built-in Context Keys (set by router.php for list pages)

These are set in the list case so that renderTemplate() can pass them to base.php:

Key	Type	Description
pageTitle	?string	Page title from metadata (for <title> tag)
metaDescription	?string	SEO description
pageCssUrl	?string	Page-specific CSS URL
pageCssHash	?string	CSS cache-bust hash
feedUrl	?string	Atom feed URL (set when feed = true in metadata)

Templates Class

Defined in app/context.php. Readonly value object.

readonly class Templates {
    public function __construct(
        public string $base,    # Path to base.php
        public string $page,    # Path to page.php
        public string $list     # Path to list.php
    ) {}
}

Resolved by resolveTemplate() — see 06-templates.md "Template Resolution (canonical reference)" for the full lookup chain.

The list template can be overridden per-directory via page_template in metadata — this is resolved at render time in router.php, not stored in the Templates object.

Global Access

Context is stored in $GLOBALS['ctx'] after creation. Plugins that need context outside hook callbacks access it via:

$ctx = $GLOBALS['ctx'];