{"action":"opened","issue":{"url":"https://api.github.com/repos/silverstripe/silverstripe-framework/issues/4998","labels_url":"https://api.github.com/repos/silverstripe/silverstripe-framework/issues/4998/labels{/name}","comments_url":"https://api.github.com/repos/silverstripe/silverstripe-framework/issues/4998/comments","events_url":"https://api.github.com/repos/silverstripe/silverstripe-framework/issues/4998/events","html_url":"https://github.com/silverstripe/silverstripe-framework/issues/4998","id":129599294,"number":4998,"title":"ModelAdmin->getList does not cater to multi value fields","user":{"login":"timkung","id":1825194,"avatar_url":"https://avatars.githubusercontent.com/u/1825194?v=3","gravatar_id":"","url":"https://api.github.com/users/timkung","html_url":"https://github.com/timkung","followers_url":"https://api.github.com/users/timkung/followers","following_url":"https://api.github.com/users/timkung/following{/other_user}","gists_url":"https://api.github.com/users/timkung/gists{/gist_id}","starred_url":"https://api.github.com/users/timkung/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/timkung/subscriptions","organizations_url":"https://api.github.com/users/timkung/orgs","repos_url":"https://api.github.com/users/timkung/repos","events_url":"https://api.github.com/users/timkung/events{/privacy}","received_events_url":"https://api.github.com/users/timkung/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-01-28T22:18:17Z","updated_at":"2016-01-28T22:18:17Z","closed_at":null,"body":"In ModelAdmin.php the getList method trims all the GET parameters from the SearchForm but this currently breaks if the value of a single parameter is an array, e.g. DateTimeField or a CheckboxSetField will cause this to throw an error as it cannot trim an array.\r\n\r\nThe change occurred at this PR: https://github.com/silverstripe/silverstripe-framework/pull/3751"}}