backoffice: fix live url for cards submission (#39746)

tests/test_backoffice_pages.py

@@ -5444,6 +5444,8 @@ def test_carddata_management(pub, studio):
     carddef.name = 'foo'
     carddef.fields = [
         fields.StringField(id='1', label='Test', type='string', varname='foo'),
+        fields.StringField(id='2', label='Condi', type='string', varname='bar',
+            required=True, condition={'type': 'django', 'value': 'form_var_foo == "ok"'}),
     ]
     carddef.store()
     carddef.data_class().wipe()
@@ -5475,6 +5477,18 @@ def test_carddata_management(pub, studio):
     assert 'Add' in resp.text
     resp = resp.click('Add')
     resp.form['f1'] = 'blah'
+
+    live_url = resp.html.find('form').attrs['data-live-url']
+    assert '/backoffice/data/foo/add/live' in live_url
+    live_resp = app.post(live_url, params=resp.form.submit_fields())
+    assert live_resp.json['result']['1']['visible']
+    assert not live_resp.json['result']['2']['visible']
+    resp.form['f1'] = 'ok'
+    live_resp = app.post(live_url, params=resp.form.submit_fields())
+    assert live_resp.json['result']['1']['visible']
+    assert live_resp.json['result']['2']['visible']
+    resp.form['f2'] = 'blah'
+
     resp = resp.form.submit('submit')
     assert resp.location.endswith('/backoffice/data/foo/1/')
     resp = resp.follow()

wcs/carddef.py

@@ -120,6 +120,9 @@ class CardDef(FormDef):
         base_url = get_publisher().get_backoffice_url() + '/data'
         return '%s/%s/' % (base_url, self.url_name)
 
+    def get_backoffice_submission_url(self):
+        return self.get_url() + 'add/'
+
     def get_admin_url(self):
         base_url = get_publisher().get_backoffice_url()
         return '%s/cards/%s/' % (base_url, self.id)