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Component Model 4.0: top-down and no more magic
Nette Component Model 4.0 brings three main changes. First, getComponents() loses its deprecated $deep and $filterType parameters, now returning only direct children; use getComponentTree() for full subtree traversal. Second, the SmartObject trait is removed from the base Component class, though higher-level classes like Control and BaseControl still include it. Third, and most significantly, monitoring callbacks now fire top-down (parent before children) instead of bottom-up. The old bottom-up approach collected all callbacks upfront as a snapshot, causing callbacks to fire on components that had already been removed from the tree. The new live-walk algorithm verifies each child is still attached before descending, prevents double-processing on moves, and matches DOM capture-phase intuition. Migration steps include replacing getComponents(true) with getComponentTree(), using array_filter() for type filtering, replacing magic property access with getters, and renaming the NAME_SEPARATOR constant to NameSeparator.
Nguồn: http://blog.nette.org/en/nette-component-model-4-0. 8sync News chỉ tóm tắt và dẫn link; bản quyền nội dung thuộc tác giả và nguồn gốc.
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