context-rules-rule-systems.md

Context Rules & Rule Systems

• In a rule, there must never be a query against the database, because all configured rules are validated in a request.

• Rules that check for the cart must always support the \Shopware\Core\Checkout\Cart\Rule\CartRuleScope class and the \Shopware\Core\Checkout\Cart\Rule\LineItemScopeclass.

• Rules may only access data provided in the appropriate scopes.

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