fix: ensure deselecting presence modifier re-enables string input

e2e/test_string_filter_e2e.py

@@ -126,3 +126,20 @@ def test_string_filter_prefilled_states(live_server, page):
     assert group_input.input_value() == ""
     assert not group_input.is_enabled()
     assert page.locator('input[name="filter-group-modifier"][value="IS_NULL"]').is_checked()
+
+
+@pytest.mark.django_db
+@override_settings(ROOT_URLCONF="e2e.test_string_filter_e2e")
+def test_string_filter_deselect_re_enables(live_server, page):
+    page.goto(live_server.url + "/test-string-filter-empty/")
+
+    name_input = page.locator('input[name="filter-name"]')
+    is_null_radio = page.locator('input[name="filter-name-modifier"][value="IS_NULL"]')
+    
+    # 1. Click "is null" -> disables input
+    is_null_radio.click()
+    assert not name_input.is_enabled()
+    
+    # 2. Click "is null" again to deselect/uncheck -> should re-enable the text input
+    is_null_radio.click()
+    assert name_input.is_enabled()

games/static/js/filter_bar.js

@@ -316,7 +316,11 @@
     if (!container) return;
     var textInput = container.querySelector('input[type="text"]');
     if (!textInput) return;
-    var val = radio.value;
+    
+    // Find the currently checked radio in the container
+    var checkedRadio = container.querySelector('input[type="radio"]:checked');
+    var val = checkedRadio ? checkedRadio.value : "";
+    
     if (val === "IS_NULL" || val === "NOT_NULL") {
       textInput.disabled = true;
       textInput.value = "";
@@ -455,9 +459,21 @@
     });
   }
 
+  /**
+   * Set up event listeners for string modifier radio buttons.
+   */
+  function setupStringFilters() {
+    document.querySelectorAll('input[data-string-modifier-radio]').forEach(function (radio) {
+      radio.addEventListener('change', function () {
+        window.toggleStringFilterInput(this);
+      });
+    });
+  }
+
   document.addEventListener("DOMContentLoaded", function () {
     injectSearchInputs();
     setupDeselectableRadios();
+    setupStringFilters();
     loadPresets();
   });
 })();