When a filter criterion is NULL, zero, or the empty string, FilterBuilder logs a warning for "Invalid condition." Let's say that we have a field on nodes called "field_archived", and we want to only return nodes that have a value of zero or NULL on this field. Because the FilterBuilder is validating the condition by checking for a non-falsey value, it will incorrectly flag this condition as invalid (even though the condition will still be applied).
field_archived on a content-type. The checkbox should be backed by a value of '1'.Invalid condition field_archived = '0' or Invalid condition field_archived = NULL
In FilterBuilder::buildFilters(), do not check $condition->getValue() for falsiness when validating the condition.
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Active
2.0
Code
