forms: allow prefilling a map field with an address (#23293)

tests/test_form_pages.py

@@ -3419,6 +3419,26 @@ def test_form_map_field_back_and_submit(pub):
     data = formdef.data_class().get(data_id)
     assert data.data == {'1': 'bla', '0': '1.234;-1.234'}
 
+def test_form_map_field_prefill_address(pub):
+    formdef = create_formdef()
+    formdef.fields = [
+        fields.PageField(id='0', label='1st page', type='page'),
+        fields.StringField(id='1', label='address', required=True, varname='address'),
+        fields.PageField(id='2', label='2nd page', type='page'),
+        fields.MapField(id='3', label='map',
+            prefill={'type': 'string', 'value': '{{ form_var_address }}'}),
+    ]
+    formdef.store()
+    resp = get_app(pub).get('/test/')
+    formdef.data_class().wipe()
+    resp.form['f1'] = '169 rue du chateau, paris'
+    with mock.patch('wcs.wf.geolocate.http_get_page') as http_get_page:
+        http_get_page.return_value = (None, 200,
+                json.dumps([{'lat':'48.8337085','lon':'2.3233693'}]), None)
+        resp = resp.form.submit('submit')
+        assert resp.form['f3$latlng'].value == '48.8337085;2.3233693'
+        assert 'chateau' in http_get_page.call_args[0][0]
+
 def test_form_map_multi_page(pub):
     formdef = create_formdef()
     formdef.fields = [fields.PageField(id='0', label='1st page', type='page'),

wcs/fields.py

@@ -61,7 +61,7 @@ class PrefillSelectionWidget(CompositeWidget):
             options = [x for x in options if x[0] in ('none', 'formula')]
         elif field and field.type == 'map':
             # limit choices to geolocation
-            options = [x for x in options if x[0] in ('none', 'geolocation')]
+            options = [x for x in options if x[0] in ('none', 'string', 'geolocation')]
 
         self.add(SingleSelectWidget, 'type', options=options, value=value.get('type'),
                  attrs={'data-dynamic-display-parent': 'true'})
@@ -1993,6 +1993,20 @@ class MapField(WidgetField):
                 'min_zoom', 'max_zoom', 'default_position',
                 'init_with_geoloc']
 
+    def get_prefill_value(self, user=None, force_string=True):
+        if self.prefill.get('type') != 'string' or not self.prefill.get('value'):
+            return (None, False)
+        # string is actually interpreted as a template of a string that will be
+        # geocoded
+        from wcs.wf.geolocate import GeolocateWorkflowStatusItem
+        geolocate = GeolocateWorkflowStatusItem()
+        geolocate.method = 'address_string'
+        geolocate.address_string = self.prefill.get('value')
+        coords = geolocate.geolocate_address_string(None)
+        if not coords:
+            return (None, False)
+        return ('%(lat)s;%(lon)s' % coords, False)
+
     def get_view_value(self, value):
         widget = self.widget_class('x%s' % random.random(), value, readonly=True)
         return widget.render_widget_content()

wcs/forms/root.py

@@ -371,7 +371,10 @@ class FormPage(Directory):
                     if verified:
                         form.get_widget('f%s' % k).readonly = 'readonly'
                         form.get_widget('f%s' % k).attrs['readonly'] = 'readonly'
-                    req.form['f%s' % k] = v
+                    if field.key == 'map':
+                        req.form['f%s$latlng' % k] = v
+                    else:
+                        req.form['f%s' % k] = v
                     one = True
 
             if not one: