import json import operator from collections import OrderedDict from functools import reduce from django.conf import settings from django.core.exceptions import FieldDoesNotExist from django.forms import BooleanField, CharField, ChoiceField, ModelForm, MultipleChoiceField, ValidationError from django.forms.widgets import HiddenInput from django.utils.translation import ugettext_lazy as _ from shapely.geometry.geo import mapping from c3nav.editor.models import ChangeSet, ChangeSetUpdate class EditorFormBase(ModelForm): def __init__(self, *args, request=None, **kwargs): self.request = request super().__init__(*args, **kwargs) creating = not self.instance.pk if 'level' in self.fields: # hide level widget self.fields['level'].widget = HiddenInput() if 'space' in self.fields: # hide space widget self.fields['space'].widget = HiddenInput() if 'geometry' in self.fields: # hide geometry widget self.fields['geometry'].widget = HiddenInput() if not creating: self.initial['geometry'] = json.dumps(mapping(self.instance.geometry), separators=(',', ':')) if 'groups' in self.fields: LocationGroupCategory = self.request.changeset.wrap_model('LocationGroupCategory') kwargs = {'allow_'+self._meta.model._meta.default_related_name: True} categories = LocationGroupCategory.objects.filter(**kwargs).prefetch_related('groups') if self.instance.pk: instance_groups = tuple(self.instance.groups.values_list('pk', flat=True)) else: instance_groups = () self.fields.pop('groups') for category in categories: choices = tuple((str(group.pk), group.title) for group in category.groups.all()) category_groups = set(group.pk for group in category.groups.all()) initial = tuple(str(pk) for pk in instance_groups if pk in category_groups) if category.single: name = 'group_'+category.name initial = initial[0] if initial else '' choices = (('', '---'), )+choices field = ChoiceField(label=category.title, required=False, initial=initial, choices=choices) else: name = 'groups_'+category.name field = MultipleChoiceField(label=category.title, required=False, initial=initial, choices=choices) self.fields[name] = field self.fields.move_to_end(name, last=False) if 'category' in self.fields: self.fields['category'].label_from_instance = lambda obj: obj.title # parse titles self.titles = None if hasattr(self.instance, 'titles'): titles = OrderedDict((lang_code, '') for lang_code, language in settings.LANGUAGES) if self.instance is not None and self.instance.pk: titles.update(self.instance.titles) language_titles = dict(settings.LANGUAGES) for language in reversed(titles.keys()): new_title = self.data.get('title_' + language) if new_title is not None: titles[language] = new_title self.fields['title_' + language] = CharField(label=language_titles.get(language, language), required=False, initial=titles[language].strip(), max_length=50) self.fields.move_to_end('title_' + language, last=False) self.titles = titles if 'name' in self.fields: self.fields.move_to_end('name', last=False) self.redirect_slugs = None self.add_redirect_slugs = None self.remove_redirect_slugs = None if 'slug' in self.fields: self.redirect_slugs = sorted(self.instance.redirects.values_list('slug', flat=True)) self.fields['redirect_slugs'] = CharField(label=_('Redirecting Slugs (comma seperated)'), required=False, initial=','.join(self.redirect_slugs)) self.fields.move_to_end('redirect_slugs', last=False) self.fields.move_to_end('slug', last=False) def clean_redirect_slugs(self): old_redirect_slugs = set(self.redirect_slugs) new_redirect_slugs = set(s for s in (s.strip() for s in self.cleaned_data['redirect_slugs'].split(',')) if s) self.add_redirect_slugs = new_redirect_slugs - old_redirect_slugs self.remove_redirect_slugs = old_redirect_slugs - new_redirect_slugs for slug in self.add_redirect_slugs: self.fields['slug'].run_validators(slug) LocationSlug = self.request.changeset.wrap_model('LocationSlug') qs = LocationSlug.objects.filter(slug__in=self.add_redirect_slugs) if self.cleaned_data['slug'] in self.add_redirect_slugs: raise ValidationError( _('Can not add redirecting slug “%s”: it\'s the slug of this object.') % self.cleaned_data['slug'] ) else: qs = qs.exclude(pk=self.instance.pk) for slug in qs.values_list('slug', flat=True)[:1]: raise ValidationError( _('Can not add redirecting slug “%s”: it is already used elsewhere.') % slug ) def clean(self): if 'geometry' in self.fields: if not self.cleaned_data.get('geometry'): raise ValidationError('Missing geometry.') super().clean() def _save_m2m(self): super()._save_m2m() try: field = self._meta.model._meta.get_field('groups') except FieldDoesNotExist: pass else: if field.many_to_many: groups = reduce(operator.or_, (set(value) for name, value in self.cleaned_data.items() if name.startswith('groups_')), set()) groups = tuple((int(val) if val.isdigit() else val) for val in groups) self.instance.groups.set(groups) def create_editor_form(editor_model): possible_fields = ['slug', 'name', 'altitude', 'category', 'width', 'groups', 'color', 'public', 'priority', 'can_search', 'can_describe', 'outside', 'stuffed', 'geometry', 'single', 'allow_levels', 'allow_spaces', 'allow_areas', 'allow_pois', 'left', 'top', 'right', 'bottom'] field_names = [field.name for field in editor_model._meta.get_fields() if not field.one_to_many] existing_fields = [name for name in possible_fields if name in field_names] class EditorForm(EditorFormBase, ModelForm): class Meta: model = editor_model fields = existing_fields EditorForm.__name__ = editor_model.__name__+'EditorForm' return EditorForm class ChangeSetForm(ModelForm): class Meta: model = ChangeSet fields = ('title', 'description') class RejectForm(ModelForm): final = BooleanField(label=_('Final rejection'), required=False) class Meta: model = ChangeSetUpdate fields = ('comment', )