Redirect to template after succesful branding request

if user entered branding request flow from a template.

app/main/views/service_settings.py

@@ -1032,8 +1032,8 @@ def link_service_to_organisation(service_id):
 @main.route("/services/<uuid:service_id>/branding-request/<branding_type>", methods=['GET', 'POST'])
 @user_has_permissions('manage_service')
 def branding_request(service_id, branding_type):
-
     form = BrandingOptions(current_service, branding_type=branding_type)
+    from_template = request.args.get('from_template')
     if branding_type == "email":
         branding_name = current_service.email_branding_name
     elif branding_type == "letter":
@@ -1065,19 +1065,20 @@ def branding_request(service_id, branding_type):
             user_name=current_user.name,
             tags=['notify_action', 'notify_branding'],
         )
-
         flash((
             'Thanks for your branding request. We’ll get back to you '
             'within one working day.'
         ), 'default')
-        return redirect(url_for('.service_settings', service_id=service_id))
+        return redirect(url_for(
+            '.view_template', service_id=current_service.id, template_id=from_template
+        ) if from_template else url_for('.service_settings', service_id=current_service.id))
 
     return render_template(
         'views/service-settings/branding/branding-options.html',
         form=form,
         branding_type=branding_type,
         branding_name=branding_name,
-        from_template=request.args.get('from_template')
+        from_template=from_template
     )
 
 

tests/app/main/views/test_service_settings.py

@@ -4614,6 +4614,39 @@ def test_show_letter_branding_request_page_when_letter_branding_is_set(
     ]
 
 
+@pytest.mark.parametrize('branding_type', ['email', 'letter'])
+@pytest.mark.parametrize('from_template,back_link_url', [
+    (None, '/services/{}/service-settings'.format(SERVICE_ONE_ID),),
+    (TEMPLATE_ONE_ID, '/services/{}/templates/{}'.format(SERVICE_ONE_ID, TEMPLATE_ONE_ID),)
+])
+def test_back_link_on_branding_request_page(
+    mocker,
+    service_one,
+    client_request,
+    mock_get_email_branding,
+    mock_get_letter_branding_by_id,
+    active_user_with_permissions,
+    from_template,
+    back_link_url,
+    branding_type,
+):
+    mocker.patch(
+        'app.organisations_client.get_service_organisation',
+        return_value=organisation_json(),
+    )
+    if from_template:
+        page = client_request.get(
+            '.branding_request', service_id=SERVICE_ONE_ID, branding_type=branding_type, from_template=from_template
+        )
+    else:
+        page = client_request.get(
+            '.branding_request', service_id=SERVICE_ONE_ID, branding_type=branding_type
+        )
+
+    back_link = page.select('a[class=govuk-back-link]')
+    assert back_link[0].attrs['href'] == back_link_url
+
+
 @pytest.mark.parametrize('branding_type', ['email', 'letter'])
 def test_show_branding_request_page_when_branding_is_same_as_org(
     mocker,
@@ -4819,6 +4852,44 @@ def test_submit_letter_branding_request(
     )
 
 
+@pytest.mark.parametrize('branding_type', ['email', 'letter'])
+@pytest.mark.parametrize('from_template', [
+    None,
+    TEMPLATE_ONE_ID
+])
+def test_submit_letter_branding_request_redirects_if_from_template_is_set(
+    client_request,
+    service_one,
+    mocker,
+    mock_get_service_settings_page_common,
+    mock_get_letter_branding_by_id,
+    no_reply_to_email_addresses,
+    no_letter_contact_blocks,
+    single_sms_sender,
+    from_template,
+    branding_type,
+
+):
+    mocker.patch('app.organisations_client.get_service_organisation', return_value=None)
+    mocker.patch('app.main.views.service_settings.zendesk_client.create_ticket', autospec=True)
+    data = {'options': 'something_else', 'something_else': 'Homer Simpson'}
+
+    if from_template:
+        client_request.post(
+            '.branding_request', service_id=SERVICE_ONE_ID, branding_type="letter", from_template=from_template,
+            _data=data,
+            _expected_redirect=url_for(
+                'main.view_template', service_id=SERVICE_ONE_ID, template_id=from_template, _external=True
+            )
+        )
+    else:
+        client_request.post(
+            '.branding_request', service_id=SERVICE_ONE_ID, branding_type="letter",
+            _data=data,
+            _expected_redirect=url_for('main.service_settings', service_id=SERVICE_ONE_ID, _external=True)
+        )
+
+
 @pytest.mark.parametrize('branding_type,current_branding', [
     ('email', 'GOV.UK'), ('letter', 'no')
 ])