I need to check a checkbox on an exposed filter for a view based on the url. I can't seem to figure out how to do that. If x is detected in the url, I want to set one of the fields of an exposed filter to have the status checked="checked." It seems like that would be pretty easy, but I can't seem to figure it out.

I have tried various ways through:

  • hook_views_pre_view()
  • hook_views_pre_build()
  • hook_form_views_exposed_form_alter() (I feel like this should be the best way.)

I've found that I can effectively alter the results through hook_views_pre_view(), but I can't figure out how to check that freaking checkbox on the exposed filter.

Varioush failed attempts via hook_form_alter():

  • $form["field_intended_use_target_id"]["#default_value"] = ['357'];
  • $form_state->input["field_intended_use_target_id"][356] = '356';
  • $form['field_intended_use_target_id']['widget'][0]['value']['#default_value'] = ['357'];

Can anyone please help?

  • try ['#default_value'] = 357; since value is not an array.
    – No Sssweat
    Commented Nov 10, 2019 at 1:42
  • btw don't add single '' nor "" double quotes around numbers, because when you do that, you're making them "strings" type rather than "numeric".
    – No Sssweat
    Commented Nov 10, 2019 at 1:46
  • No luck. Using xdebug I can see that it does in fact set the default value. But it still doesn't render with the checkbox checked. I checked source to confirm. I turned off my theme and used Bartik. Still no dice.
    – xpersonas
    Commented Nov 10, 2019 at 1:49
  • Also tried removing quotes. Just can't seem to get that checked attribute for anything.
    – xpersonas
    Commented Nov 10, 2019 at 1:51
  • I suggest you add a default value on your view's exposed filter settings, then check how the structure looks like, find where exactly the ['#default_value'] gets added inside $form array. Then you'll know where you need to put it.
    – No Sssweat
    Commented Nov 10, 2019 at 1:51

2 Answers 2


I was finally able to achieve what I need via the hook_views_pre_build() hook.

Please let me know if this is wrong or if there is a better way, but from what I can tell this is the best way to achieve this.

function module_views_pre_build(ViewExecutable $view) {
  $termId = 357;
  $view->setExposedInput(['field_name' => [$termId => $termId]]);

You can use hook_form_alter() by adding view id condition. The use the code below, replacing FILTER_NAME with the name of your filter and set the necessary options.

$request = \Drupal::request();
if (!$request->get(FILTER_NAME, NULL)) {
  $input = &$form_state->getUserInput();
  $input[FILTER_NAME] = [
    'opt1' => 'opt1',
    'opt2' => 'opt2',

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