* \Drupal\Component\Plugin\Exception\ContextException * The array of values, as returned by toArray(). * Creates a definition object from an exported array of values. View source class ContextDefinition extends ContextDefinitionCore implements ContextDefinitionInterface Src/ Context/ ContextDefinition.php, line 52 Namespace Drupal\rules\Context 22 files declare their use of ContextDefinition AutocompleteTest.php in tests/ src/ Kernel/ Engine/ AutocompleteTest.php AutoSaveTest.php in tests/ src/ Unit/ Integration/ Engine/ AutoSaveTest.php ConfigEntityTest.php in tests/ src/ Kernel/ ConfigEntityTest.php ContextDefinition.php in src/ Context/ Annotation/ ContextDefinition.php ContextIntegrationTest.php in tests/ src/ Kernel/ ContextIntegrationTest.php \Drupal\rules\Context\Entit圜ontextDefinition class \Drupal\rules\Context\ ContextDefinition implements ContextDefinitionInterfaceĮxpanded class hierarchy of ContextDefinition See also.This is a poor solution that will work for existing core Rules use-cases, asĮntit圜ontextDefinition is never used directly in Rules, but this may not The core Entit圜ontextDefinition doesn't have the necessary Rules extensionsĪnd there is no multiple inheritance in PHP so we have to extendĬontextDefinition and Entit圜ontextDefinition separately. We also override the core ContextDefinition'sĬreate() method to create a Rules version of Entit圜ontextDefinition whenĬontextDefinition is created for an entity type. Remove that here - the _construct() method of this class is otherwise In the parent::_construct(), there is an explicitĪssert that prevents ContextDefinition from being used for an entity. To work around this, we override the core ContextDefinition's _construct()Īnd create() methods.
Programmatically create a context definition for an arbitrary data type, Introspection and reflection to manipulate typed data. This Drupal 9 behavior is unworkable in a module like Rules where we rely on This is a problem because now there is noįactory method to create context definitions, and we have to test each typeĪnd just "know" the correct class to use for that type to create a context ONLY for non-entity types, and we have to use a different way to createĬontext definitions for entities. Thus the core ContextDefinition::create($type) will work This worked in Drupal 8, but in Drupal 9 we now have to use different classesįor different types. May be 'integer', or 'string', or 'entity:node' etc. New ContextDefinition($type) or ContextDefinition::create($type) where $type Without prior knowledge of what that type is we need to be able to say We need to be able to create a ContextDefinition for ANY typed data object, This class overrides the core ContextDefinition to provide Rules-specificįunctionality, but also to preserve the Drupal 8 behavior ofĬontextDefinition without triggering deprecated code.
DRUPAL RULES RESET VALUE TO NULL MANUAL
The other option is to have a manual checkbox to denote that the field value should be validated against a null value.
DRUPAL RULES RESET VALUE TO NULL CODE
(save for option lists)Įither the code needs to sniff out if the field value has a selection to validate against and if not, then flag it as "null" and the visibility rule will then validate against that null value. This use case appears to carry over into other fields as well, not just reference fields, though it's been awhile since I've tested other fields. Maybe this has something to do with the problem? However, because the visibility rules won't validate against a null value, it doesn't know what to do and hides it regardless.Ĭurrently when setting the "NOT" option and leaving the field to a null value, upon saving, the "NOT" is then unchecked.
I would much rather hide the link if there's nothing to jump to. As a result, when a visibility rule is set, the jump link disappears regardless of whether there is a referenced node or not. In other words, if the reference field is blank (null) don't show the jump link.
The visibility rule selection wants me to choose a specific node for the reference field, however I want the rule to "NOT trigger when null". The panel creates a simple jump link to the place on the page where the referenced node is located. In other words, if nothing is selected as a validation (null), then follow the visibility rule.įor example, I have a reference field with autocomplete. There are times when a visibility rule needs to be followed for when the value in a field is null. Visibility rules do not accept "null" values from fields that are not required, with the exception of select lists.
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