Important

You are browsing the documentation for version 4.2 of OroCommerce, OroCRM and OroPlatform, which is no longer maintained. Read version 5.1 (the latest LTS version) of the Oro documentation to get up-to-date information.

See our Release Process documentation for more information on the currently supported and upcoming releases.

Layout Cache¶

Layout cache is based on layout context.

It uses the Context::getHash method to generate the cache key.

Layout cache uses OroCacheBundle. For more information, see BlockViewCache.

Last Modification Date¶

The layout context contains the last modification date of the files with layout updates. It is registered with the layout.context_configurator - LastModifiedDateContextConfigurator.

BlockView Tree¶

The layout cache contains the root BlockView with children and variables.

The BlockView tree is serialized with oro_layout.block_view_serializer.

The following is the list of normalizers used in the oro_layout.block_view_serializer:

oro_layout.block_view_serializer.block_view_normalizer - BlockViewNormalizer
oro_layout.block_view_serializer.expression_normalizer - ExpressionNormalizer
oro_layout.option_value_bag_normaizer - OptionValueBagNormalizer

All normalizers are registered as a service in the DI container with the layout.block_view_serializer.normalizer tag.

Expressions / Evaluate and Evaluate Deferred¶

There are two groups of expressions in the BlockView options:

Context key expressions_evaluate - expressions that do not work with data. It evaluates before BlockTypeInterface::buildBlock
Context key expressions_evaluate_deferred - expressions that work with data. It evaluates after BlockTypeInterface::finishView

For example:

actions:
    ...
    - '@add':
        id: blockId
        parentId: parentId
        blockType: typeName
        options:
            optionName: '=context["valueKey"]'

It will be evaluated before the BlockTypeInterface::buildBlock and the result will be cached.

actions:
    ...
    - '@add':
        id: blockId
        parentId: parentId
        blockType: typeName
        options:
            optionName: '=data["valueKey"]'

It will be evaluated after BlockTypeInterface::finishView and the result will not be cached.