fields: add support for autocomplete fields in blocks (#44760)

tests/test_form_pages.py

@@ -8364,6 +8364,38 @@ def test_block_date(pub, blocks_feature):
     assert '>2020-06-16<' in resp
 
 
+def test_block_autocomplete_list(pub, blocks_feature):
+    create_user(pub)
+    FormDef.wipe()
+    BlockDef.wipe()
+
+    block = BlockDef()
+    block.name = 'foobar'
+    block.fields = [
+        fields.StringField(id='123', required=True, label='Test', type='string'),
+        fields.ItemField(id='234', required=True, label='Test2', type='item',
+            display_mode='autocomplete', items=['Foo', 'Bar']),
+    ]
+    block.store()
+
+    formdef = FormDef()
+    formdef.name = 'form title'
+    formdef.fields = [
+        fields.BlockField(id='1', label='test', type='block:foobar'),
+    ]
+    formdef.store()
+
+    app = get_app(pub)
+    resp = app.get(formdef.get_url())
+    resp.form['f1$element0$f123'] = 'foo'
+    resp.form['f1$element0$f234'] = 'Bar'
+    resp = resp.form.submit('submit')  # -> validation page
+    assert 'Check values then click submit.' in resp.text
+    resp = resp.form.submit('submit')  # -> submit
+    resp = resp.follow()
+    assert '>Bar<' in resp
+
+
 def test_block_multipage(pub, blocks_feature):
     create_user(pub)
     FormDef.wipe()

wcs/blocks.py

@@ -239,7 +239,8 @@ class BlockSubWidget(CompositeWidget):
 
     def add_media(self):
         for widget in self.get_widgets():
-            widget.add_media()
+            if hasattr(widget, 'add_media'):
+                widget.add_media()
 
 
 class BlockWidget(WidgetList):

wcs/fields.py

@@ -1545,7 +1545,9 @@ class ItemField(WidgetField):
         get_request().form[self.field_key + '_label'] = label_value # :/
         form.add(StringWidget, self.field_key + '_label', title = self.label,
                  value=label_value, readonly='readonly', size=len(label_value or '')+2)
+        form.get_widget(self.field_key + '_label').field = self
         form.add(HiddenWidget, self.field_key, value=real_value)
+        form.get_widget(self.field_key).field = self
         widget = form.get_widget(self.field_key + '_label')
         if self.extra_css_class:
             if hasattr(widget, 'extra_css_class') and widget.extra_css_class: