What is the solution for deprecated getSearchContext() after 4.3?
Are you talking about
ModelAdmin::getSearchContext() ? (just checking, as there are multiple classes which have a method with this name).
If so, then the deprecation notice provides the hint:
Deprecation::notice('4.3', 'Will be removed in favor of GridFieldFilterHeader in 5.0');
There’s a bit of discussion about the situation here:
That also has some code snippets regarding how to use GridFieldFilterHeader from people who have encountered the same question.
Thank you very much. I am migrating from 4.1 to 4.7.