Imports: prevent creation of new items when data is empty

1 files changed, 140 insertions, 134 deletions

diff --git a/ishtar_common/data_importer.py b/ishtar_common/data_importer.py
index fbf19def2..426d32a7a 100644
--- a/ishtar_common/data_importer.py
+++ b/ishtar_common/data_importer.py
@@ -1381,146 +1381,152 @@ class Importer(object):
 
     def get_object(self, cls, data, path=[]):
         m2ms = []
-        if data and type(data) == dict:
-            c_path = path[:]
-
-            # get all related fields
-            new_created = {}
-            for attribute in list(data.keys()):
-                c_c_path = c_path[:]
-                if not attribute:
-                    data.pop(attribute)
-                    continue
-                if not data[attribute]:
-                    continue
-                if attribute != '__force_new':
-                    self.get_field(cls, attribute, data, m2ms, c_c_path,
-                                   new_created)
-
-            create_dict = copy.deepcopy(data)
-            for k in create_dict.keys():
-                # filter unnecessary default values
-                if type(create_dict[k]) == dict:
-                    create_dict.pop(k)
-                # File doesn't like deepcopy
-                if type(create_dict[k]) == File:
-                    create_dict[k] = copy.copy(data[k])
-
-            # default values
-            path = tuple(path)
-            defaults = {}
-            if path in self._defaults:
-                for k in self._defaults[path]:
-                    if (k not in data or not data[k]):
-                        defaults[k] = self._defaults[path][k]
-
-            if 'history_modifier' in create_dict:
-                defaults.update({
-                    'history_modifier': create_dict.pop('history_modifier')
-                })
-
-            created = False
+        if type(data) != dict:
+            return data, False
+        is_empty = not bool(
+            [k for k in data if k not in ('history_modifier', 'defaults')
+                and data[k]])
+        if is_empty:
+            return None, False
+
+        c_path = path[:]
+
+        # get all related fields
+        new_created = {}
+        for attribute in list(data.keys()):
+            c_c_path = c_path[:]
+            if not attribute:
+                data.pop(attribute)
+                continue
+            if not data[attribute]:
+                continue
+            if attribute != '__force_new':
+                self.get_field(cls, attribute, data, m2ms, c_c_path,
+                               new_created)
+
+        create_dict = copy.deepcopy(data)
+        for k in create_dict.keys():
+            # filter unnecessary default values
+            if type(create_dict[k]) == dict:
+                create_dict.pop(k)
+            # File doesn't like deepcopy
+            if type(create_dict[k]) == File:
+                create_dict[k] = copy.copy(data[k])
+
+        # default values
+        path = tuple(path)
+        defaults = {}
+        if path in self._defaults:
+            for k in self._defaults[path]:
+                if k not in data or not data[k]:
+                    defaults[k] = self._defaults[path][k]
+
+        if 'history_modifier' in create_dict:
+            defaults.update({
+                'history_modifier': create_dict.pop('history_modifier')
+            })
+
+        created = False
+        try:
             try:
-                try:
-                    dct = create_dict.copy()
-                    for key in dct:
-                        if callable(dct[key]):
-                            dct[key] = dct[key]()
-                    if '__force_new' in dct:
-                        created = dct.pop('__force_new')
-                        if not [k for k in dct if dct[k] is not None]:
-                            return None, created
-                        new_dct = defaults.copy()
-                        new_dct.update(dct)
-                        if self.MODEL_CREATION_LIMIT and \
-                                cls not in self.MODEL_CREATION_LIMIT:
-                            raise self._get_improperly_conf_error(cls)
-                        obj = cls.objects.create(**new_dct)
+                dct = create_dict.copy()
+                for key in dct:
+                    if callable(dct[key]):
+                        dct[key] = dct[key]()
+                if '__force_new' in dct:
+                    created = dct.pop('__force_new')
+                    if not [k for k in dct if dct[k] is not None]:
+                        return None, created
+                    new_dct = defaults.copy()
+                    new_dct.update(dct)
+                    if self.MODEL_CREATION_LIMIT and \
+                            cls not in self.MODEL_CREATION_LIMIT:
+                        raise self._get_improperly_conf_error(cls)
+                    obj = cls.objects.create(**new_dct)
+                else:
+                    # manage UNICITY_KEYS - only level 1
+                    if not path and self.UNICITY_KEYS:
+                        for k in dct.keys():
+                            if k not in self.UNICITY_KEYS \
+                               and k != 'defaults':
+                                defaults[k] = dct.pop(k)
+                    if not self.MODEL_CREATION_LIMIT or \
+                            cls in self.MODEL_CREATION_LIMIT:
+                        dct['defaults'] = defaults.copy()
+                        obj, created = cls.objects.get_or_create(**dct)
                     else:
-                        # manage UNICITY_KEYS - only level 1
-                        if not path and self.UNICITY_KEYS:
-                            for k in dct.keys():
-                                if k not in self.UNICITY_KEYS \
-                                   and k != 'defaults':
-                                    defaults[k] = dct.pop(k)
-                        if not self.MODEL_CREATION_LIMIT or \
-                                cls in self.MODEL_CREATION_LIMIT:
+                        try:
+                            obj = cls.objects.get(**dct)
                             dct['defaults'] = defaults.copy()
-                            obj, created = cls.objects.get_or_create(**dct)
-                        else:
-                            try:
-                                obj = cls.objects.get(**dct)
-                                dct['defaults'] = defaults.copy()
-                            except cls.DoesNotExist:
-                                raise self._get_does_not_exist_in_db_error(
-                                    cls, dct)
-
-                        if not created and not path and self.UNICITY_KEYS:
-                            changed = False
-                            if self.conservative_import:
-                                for k in dct['defaults']:
-                                    new_val = dct['defaults'][k]
-                                    if new_val is None or new_val == '':
-                                        continue
-                                    val = getattr(obj, k)
-                                    if val is None or val == '':
-                                        changed = True
-                                        setattr(obj, k, new_val)
-                                    elif k in self.concats \
-                                            and type(val) == unicode \
-                                            and type(new_val) == unicode:
-                                        setattr(obj, k, val + u"\n" + new_val)
-                            else:
-                                for k in dct['defaults']:
-                                    new_val = dct['defaults'][k]
-                                    if new_val is None or new_val == '':
-                                        continue
+                        except cls.DoesNotExist:
+                            raise self._get_does_not_exist_in_db_error(
+                                cls, dct)
+
+                    if not created and not path and self.UNICITY_KEYS:
+                        changed = False
+                        if self.conservative_import:
+                            for k in dct['defaults']:
+                                new_val = dct['defaults'][k]
+                                if new_val is None or new_val == '':
+                                    continue
+                                val = getattr(obj, k)
+                                if val is None or val == '':
                                     changed = True
                                     setattr(obj, k, new_val)
-                            if changed:
-                                obj.save()
-                    if self.import_instance and hasattr(obj, 'imports') \
-                       and created:
-                        obj.imports.add(self.import_instance)
-                except ValueError as e:
-                    raise IntegrityError(e.message)
-                except IntegrityError as e:
-                    raise IntegrityError(e.message)
-                except DatabaseError as e:
-                    raise IntegrityError(e.message)
-                except cls.MultipleObjectsReturned as e:
-                    created = False
-                    if 'defaults' in dct:
-                        dct.pop('defaults')
-                    raise IntegrityError(e.message)
-                    # obj = cls.objects.filter(**dct).all()[0]
-                for attr, value in m2ms:
-                    values = [value]
-                    if type(value) in (list, tuple):
-                        values = value
-                    for v in values:
-                        getattr(obj, attr).add(v)
-                        # force post save script
-                        v.save()
-                if m2ms:
-                    # force post save script
-                    obj.save()
+                                elif k in self.concats \
+                                        and type(val) == unicode \
+                                        and type(new_val) == unicode:
+                                    setattr(obj, k, val + u"\n" + new_val)
+                        else:
+                            for k in dct['defaults']:
+                                new_val = dct['defaults'][k]
+                                if new_val is None or new_val == '':
+                                    continue
+                                changed = True
+                                setattr(obj, k, new_val)
+                        if changed:
+                            obj.save()
+                if self.import_instance and hasattr(obj, 'imports') \
+                   and created:
+                    obj.imports.add(self.import_instance)
+            except ValueError as e:
+                raise IntegrityError(e.message)
             except IntegrityError as e:
-                message = e.message
-                try:
-                    message = e.message.decode('utf-8')
-                except (UnicodeDecodeError, UnicodeDecodeError):
-                    message = ''
-                try:
-                    data = unicode(data)
-                except UnicodeDecodeError:
-                    data = ''
-                raise ImporterError(
-                    "Erreur d'import %s %s, contexte : %s, erreur : %s"
-                    % (unicode(cls), unicode("__".join(path)),
-                       unicode(data), message))
-            return obj, created
-        return data
+                raise IntegrityError(e.message)
+            except DatabaseError as e:
+                raise IntegrityError(e.message)
+            except cls.MultipleObjectsReturned as e:
+                created = False
+                if 'defaults' in dct:
+                    dct.pop('defaults')
+                raise IntegrityError(e.message)
+                # obj = cls.objects.filter(**dct).all()[0]
+            for attr, value in m2ms:
+                values = [value]
+                if type(value) in (list, tuple):
+                    values = value
+                for v in values:
+                    getattr(obj, attr).add(v)
+                    # force post save script
+                    v.save()
+            if m2ms:
+                # force post save script
+                obj.save()
+        except IntegrityError as e:
+            message = e.message
+            try:
+                message = e.message.decode('utf-8')
+            except (UnicodeDecodeError, UnicodeDecodeError):
+                message = ''
+            try:
+                data = unicode(data)
+            except UnicodeDecodeError:
+                data = ''
+            raise ImporterError(
+                "Erreur d'import %s %s, contexte : %s, erreur : %s"
+                % (unicode(cls), unicode("__".join(path)),
+                   unicode(data), message))
+        return obj, created
 
     def _format_csv_line(self, values, empty=u"-"):
         return u'"' + u'","'.join(