cards: add support for importing items field (#48775)

tests/backoffice_pages/test_carddata.py

@@ -287,6 +287,7 @@ def test_backoffice_cards_import_data_from_csv(pub, studio):
         fields.EmailField(id='8', label='Email'),
         fields.TextField(id='9', label='Long'),
         fields.ItemField(id='10', label='List2', data_source=data_source),
+        fields.ItemsField(id='11', label='Items', data_source=data_source, required=False),
     ]
     carddef.workflow_roles = {'_editor': user.roles[0]}
     carddef.store()
@@ -315,7 +316,7 @@ def test_backoffice_cards_import_data_from_csv(pub, studio):
     sample_resp = resp.click('Download sample file for this card')
     today = datetime.date.today()
     assert sample_resp.text == (
-            "Table,Map,Test,Boolean,List,Date,File,Email,Long,List2\r\n"
+            "Table,Map,Test,Boolean,List,Date,File,Email,Long,List2,Items\r\n"
             "will be ignored - type Table not supported,"
             "%s,"
             "value,"
@@ -325,7 +326,8 @@ def test_backoffice_cards_import_data_from_csv(pub, studio):
             "will be ignored - type File Upload not supported,"
             "foo@example.com,"
             "value,"
-            "value\r\n" % (pub.get_default_position(), today))
+            "value,"
+            "id1|id2|...\r\n" % (pub.get_default_position(), today))
 
     # missing file
     resp = resp.forms[0].submit()
@@ -345,9 +347,9 @@ def test_backoffice_cards_import_data_from_csv(pub, studio):
     resp = resp.forms[0].submit()
     assert 'CSV file contains less columns than card fields.' in resp.text
 
-    data = [b'Table,Map,Test,Boolean,List,Date,File,Email,Long,List2']
+    data = [b'Table,Map,Test,Boolean,List,Date,File,Email,Long,List2,Items']
     for i in range(1, 150):
-        data.append(b'table,48.81;2.37,data%d ,%s,item%d,2020-01-%02d,filename-%d,test@localhost,"plop\nplop",1' % (
+        data.append(b'table,48.81;2.37,data%d ,%s,item%d,2020-01-%02d,filename-%d,test@localhost,"plop\nplop",1,1|2' % (
             i, str(bool(i % 2)).encode('utf-8'), i, i % 31 + 1, i))
 
     resp.forms[0]['file'] = Upload('test.csv', b'\n'.join(data),
@@ -365,6 +367,11 @@ def test_backoffice_cards_import_data_from_csv(pub, studio):
     assert card1.data['10'] == '1'
     assert card1.data['10_display'] == 'un'
     assert card1.data['10_structured'] == {'id': '1', 'text': 'un', 'more': 'foo'}
+    assert card1.data['11'] == ['1', '2']
+    assert card1.data['11_display'] == 'un, deux'
+    assert card1.data['11_structured'] == [
+            {'id': '1', 'text': 'un', 'more': 'foo'},
+            {'id': '2', 'text': 'deux', 'more': 'bar'}]
     assert card2.data['2'] == 'data2'
     assert card2.data['3'] is False
     assert card2.data['5'].tm_mday == 3

wcs/backoffice/data_management.py

@@ -160,6 +160,8 @@ class CardPage(FormPage):
                 value = 'foo@example.com'
             elif isinstance(f, fields.MapField):
                 value = get_publisher().get_default_position()
+            elif isinstance(f, fields.ItemsField):
+                value = 'id1|id2|...'
             else:
                 value = 'value'
             sample_line.append(value)

wcs/fields.py

@@ -1785,6 +1785,13 @@ class ItemsField(WidgetField):
     def convert_value_to_str(self, value):
         return value
 
+    def convert_value_from_str(self, value):
+        if not isinstance(value, str):
+            return value
+        if not value.strip():
+            return None
+        return [x.strip() for x in value.split('|') if x.strip()]
+
     def get_view_value(self, value, **kwargs):
         if type(value) is str: # == display_value
             return value