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Developer tools · #contao
An architecture note on Contao's page-and-article system: how the adjacency-list page tree, branch-level permissions, Twig rendering boundary, and fragment cache interact — plus concrete diagnostics for cache fragmentation, deadlock detection, and menu recursion limits.
Stop writing custom Symfony controllers for standard CRUD in Contao. The Data Container Array (DCA) generates list views, edit forms, and database schema from a single declarative PHP array. This post shows a complete job posting example and the exact verification steps.
Learn how to define and assign Contao Backend Layouts to change page templates without altering the page tree, with a working config example and verification steps.
Register a custom Contao backend module so it appears in the user-group 'Allowed modules' list, let Contao hide the menu entry automatically, and enforce the same check in your controller to block direct URL access.
Learn how to create reusable, decoupled page layouts in Contao 5 using Twig templates, block overrides, and the Page ‘Template’ field. A step‑by‑step example shows how to assign a custom template, verify it renders correctly, and avoid common pitfalls.
Stop writing PHP form boilerplate in Contao. Use the Form Generator to declare fields, validation, and actions from the backend, and extend it with custom field types when needed. This guide walks through a multi‑step event registration form and explains when you’ll need to drop into Symfony code.
Learn how to create a Contao Frontend Module for reusable blocks like author bios, with custom templates, field configuration, and deployment tips.
Step‑by‑step guide to diagnose and fix Contao backend login redirect loops after an update, covering cookie, cache, timezone, proxy, and template causes.
Learn how to use Contao's native List module to implement database-level filtering and pagination, reducing page load times and improving content discovery.
symfony