X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/f50cd63e40d7dfc9ffb51b679748b0003fddb019..66d42c282c25daff0aa34ae374a05439ce2868c6:/admin/forms/containers.py?ds=sidebyside diff --git a/admin/forms/containers.py b/admin/forms/containers.py index 5991dfa..420ba17 100644 --- a/admin/forms/containers.py +++ b/admin/forms/containers.py @@ -2,8 +2,9 @@ from django import forms from django.contrib.admin.widgets import AdminTextareaWidget from django.core.exceptions import ObjectDoesNotExist from django.db.models import Q -from django.forms.models import ModelForm, BaseInlineFormSet +from django.forms.models import ModelForm, BaseInlineFormSet, BaseModelFormSet from django.forms.formsets import TOTAL_FORM_COUNT +from django.utils.datastructures import SortedDict from philo.admin.widgets import ModelLookupWidget from philo.models import Contentlet, ContentReference @@ -20,17 +21,19 @@ class ContainerForm(ModelForm): def __init__(self, *args, **kwargs): super(ContainerForm, self).__init__(*args, **kwargs) self.verbose_name = self.instance.name.replace('_', ' ') + self.prefix = self.instance.name class ContentletForm(ContainerForm): content = forms.CharField(required=False, widget=AdminTextareaWidget, label='Content') def should_delete(self): - return not bool(self.cleaned_data['content']) + # Delete iff: the data has changed and is now empty. + return self.has_changed() and not bool(self.cleaned_data['content']) class Meta: model = Contentlet - fields = ['name', 'content'] + fields = ['content'] class ContentReferenceForm(ContainerForm): @@ -43,72 +46,92 @@ class ContentReferenceForm(ContainerForm): pass def should_delete(self): - return (self.cleaned_data['content_id'] is None) + return self.has_changed() and (self.cleaned_data['content_id'] is None) class Meta: model = ContentReference - fields = ['name', 'content_id'] + fields = ['content_id'] class ContainerInlineFormSet(BaseInlineFormSet): - def __init__(self, containers, data=None, files=None, instance=None, save_as_new=False, prefix=None, queryset=None): - # Unfortunately, I need to add some things to BaseInline between its __init__ and its - # super call, so a lot of this is repetition. + @property + def containers(self): + if not hasattr(self, '_containers'): + self._containers = self.get_containers() + return self._containers + + def total_form_count(self): + # This ignores the posted management form data... but that doesn't + # seem to have any ill side effects. + return len(self.containers.keys()) + + def _get_initial_forms(self): + return [form for form in self.forms if form.instance.pk is not None] + initial_forms = property(_get_initial_forms) + + def _get_extra_forms(self): + return [form for form in self.forms if form.instance.pk is None] + extra_forms = property(_get_extra_forms) + + def _construct_form(self, i, **kwargs): + if 'instance' not in kwargs: + kwargs['instance'] = self.containers.values()[i] - # Start cribbed from BaseInline - from django.db.models.fields.related import RelatedObject - self.save_as_new = save_as_new - # is there a better way to get the object descriptor? - self.rel_name = RelatedObject(self.fk.rel.to, self.model, self.fk).get_accessor_name() - if self.fk.rel.field_name == self.fk.rel.to._meta.pk.name: - backlink_value = self.instance - else: - backlink_value = getattr(self.instance, self.fk.rel.field_name) - if queryset is None: - queryset = self.model._default_manager - qs = queryset.filter(**{self.fk.name: backlink_value}) - # End cribbed from BaseInline + # Skip over the BaseModelFormSet. We have our own way of doing things! + form = super(BaseModelFormSet, self)._construct_form(i, **kwargs) - self.container_instances, qs = self.get_container_instances(containers, qs) - self.extra_containers = containers - self.extra = len(self.extra_containers) - super(BaseInlineFormSet, self).__init__(data, files, prefix=prefix, queryset=qs) - - def get_container_instances(self, containers, qs): - raise NotImplementedError + # Since we skipped over BaseModelFormSet, we need to duplicate what BaseInlineFormSet would do. + if self.save_as_new: + # Remove the primary key from the form's data, we are only + # creating new instances + form.data[form.add_prefix(self._pk_field.name)] = None + + # Remove the foreign key from the form's data + form.data[form.add_prefix(self.fk.name)] = None + + # Set the fk value here so that the form can do it's validation. + setattr(form.instance, self.fk.get_attname(), self.instance.pk) + return form - def total_form_count(self): - if self.data or self.files: - return self.management_form.cleaned_data[TOTAL_FORM_COUNT] + def add_fields(self, form, index): + """Override the pk field's initial value with a real one.""" + super(ContainerInlineFormSet, self).add_fields(form, index) + if index is not None: + pk_value = self.containers.values()[index].pk else: - return self.initial_form_count() + self.extra + pk_value = None + form.fields[self._pk_field.name].initial = pk_value def save_existing_objects(self, commit=True): self.changed_objects = [] self.deleted_objects = [] if not self.get_queryset(): return [] - + saved_instances = [] for form in self.initial_forms: pk_name = self._pk_field.name raw_pk_value = form._raw_value(pk_name) - + # clean() for different types of PK fields can sometimes return # the model instance, and sometimes the PK. Handle either. pk_value = form.fields[pk_name].clean(raw_pk_value) pk_value = getattr(pk_value, 'pk', pk_value) - - obj = self._existing_object(pk_value) - if form.should_delete(): - self.deleted_objects.append(obj) - obj.delete() - continue - if form.has_changed(): - self.changed_objects.append((obj, form.changed_data)) - saved_instances.append(self.save_existing(form, obj, commit=commit)) - if not commit: - self.saved_forms.append(form) + + # if the pk_value is None, they have just switched to a + # template which didn't contain data about this container. + # Skip! + if pk_value is not None: + obj = self._existing_object(pk_value) + if form.should_delete(): + self.deleted_objects.append(obj) + obj.delete() + continue + if form.has_changed(): + self.changed_objects.append((obj, form.changed_data)) + saved_instances.append(self.save_existing(form, obj, commit=commit)) + if not commit: + self.saved_forms.append(form) return saved_instances def save_new_objects(self, commit=True): @@ -127,64 +150,41 @@ class ContainerInlineFormSet(BaseInlineFormSet): class ContentletInlineFormSet(ContainerInlineFormSet): - def __init__(self, data=None, files=None, instance=None, save_as_new=False, prefix=None, queryset=None): - if instance is None: - self.instance = self.fk.rel.to() - else: - self.instance = instance - + def get_containers(self): try: containers = list(self.instance.containers[0]) except ObjectDoesNotExist: containers = [] - - super(ContentletInlineFormSet, self).__init__(containers, data, files, instance, save_as_new, prefix, queryset) - - def get_container_instances(self, containers, qs): - qs = qs.filter(name__in=containers) - container_instances = [] - for container in qs: - container_instances.append(container) - containers.remove(container.name) - return container_instances, qs - - def _construct_form(self, i, **kwargs): - if i >= self.initial_form_count(): # and not kwargs.get('instance'): - kwargs['instance'] = self.model(name=self.extra_containers[i - self.initial_form_count() - 1]) - return super(ContentletInlineFormSet, self)._construct_form(i, **kwargs) + qs = self.get_queryset().filter(name__in=containers) + container_dict = SortedDict([(container.name, container) for container in qs]) + for name in containers: + if name not in container_dict: + container_dict[name] = self.model(name=name) + + container_dict.keyOrder = containers + return container_dict class ContentReferenceInlineFormSet(ContainerInlineFormSet): - def __init__(self, data=None, files=None, instance=None, save_as_new=False, prefix=None, queryset=None): - if instance is None: - self.instance = self.fk.rel.to() - else: - self.instance = instance - + def get_containers(self): try: - containers = list(self.instance.containers[1]) + containers = self.instance.containers[1] except ObjectDoesNotExist: - containers = [] - - super(ContentReferenceInlineFormSet, self).__init__(containers, data, files, instance, save_as_new, prefix, queryset) - - def get_container_instances(self, containers, qs): - filter = Q() + containers = {} - for name, ct in containers: + filter = Q() + for name, ct in containers.items(): filter |= Q(name=name, content_type=ct) + qs = self.get_queryset().filter(filter) - qs = qs.filter(filter) - container_instances = [] - for container in qs: - container_instances.append(container) - containers.remove((container.name, container.content_type)) - return container_instances, qs - - def _construct_form(self, i, **kwargs): - if i >= self.initial_form_count(): # and not kwargs.get('instance'): - name, content_type = self.extra_containers[i - self.initial_form_count() - 1] - kwargs['instance'] = self.model(name=name, content_type=content_type) - - return super(ContentReferenceInlineFormSet, self)._construct_form(i, **kwargs) \ No newline at end of file + container_dict = SortedDict([(container.name, container) for container in qs]) + + keyOrder = [] + for name, ct in containers.items(): + keyOrder.append(name) + if name not in container_dict: + container_dict[name] = self.model(name=name, content_type=ct) + + container_dict.keyOrder = keyOrder + return container_dict \ No newline at end of file