def occurrence_composition_queryset(formset, request, obj):
release_id = utils_id.get_release_id(request, obj)
if release_id == 0:
force_formset_size(formset, 0)
else:
release_compositions = retrieve_release_composition(release_id)
force_formset_size(formset, len(release_compositions))
## Does not help with saving the emtpy forms (only with their initial values)...
#formset.validate_min = True
#formset.validate_max = True
# Would not be a safe approach, see comment in populate_occurrence_attributes()
#formset.initial = [{"release_composition": compo} for compo in release_compositions]
release_compositions = list(release_compositions)
for form in formset:
release_compo, in_db = get_or_initial_release_corresponding_entry(form, release_compositions, "release_composition")
release = release_compo.to_release
#form.empty_permitted=False ## Does not help with empty forms either
form.fields["to_occurrence"].queryset = (
Occurrence.objects.filter(release=release) # only propose occurrences of the right release
.filter(Q(occurrence_composition__isnull=True) # not already nested in another occurrence
| Q(occurrence_composition__from_occurrence=formset.instance)) # except if nested in this occurrence (for edit)
)
form.fields["to_occurrence"].label = "Nested {} occurrence".format(release.name)
def populate_occurrence_attributes(formset, request, obj):
release_id = utils_id.get_release_id(request, obj)
attributes = retrieve_noncustom_custom_release_attributes(release_id)
force_formset_size(formset, len(attributes))
# We had to move away from always assigning the initial value for release_corresponding_entry:
# When "changing" and existing occurrence, if the Occurrence***Attribute are not saved in the same order as the Release***Attribute of the matching Release
# (side note: this situation is treated as an error by formset clean)
# the value assigned to initial would override the release_corresponding_entry saved in the DB,
# but the associated attribute value would still be the one from the DB, causing a mismatch.
#formset.initial = [{"release_corresponding_entry": attrib} for attrib in attributes]
# Instead, we create a list of all Release***Attribute assigned to the correponding release, and remove from this list
# the Release***Attribute which already have a matchin Occurrence***Attribute saved to the DB.
attribute_list = list(attributes)
for form in formset:
rel_attrib, in_db = get_or_initial_release_corresponding_entry(form, attribute_list, "release_corresponding_entry")
# This is very important: by default, forms in formsets have empty_permitted set to True
# Then, a form with no other value than the initial(s) would skip fields validation, not populating cleaned_data
# see: https://github.com/django/django/blob/1.8.3/django/forms/forms.py#L389
form.empty_permitted=False
form.fields["value"] = enum.Attribute.Type.to_form_field[rel_attrib.attribute.value_type]
if not in_db:
form.initial.update({
"attribute_type": ContentType.objects.get_for_model(rel_attrib.__class__),
"attribute_id": rel_attrib.pk,
})
def populate_occurrence_attributes(formset, request, obj):
release_id = utils_id.get_release_id(request, obj)
attributes = retrieve_noncustom_custom_release_attributes(release_id)
force_formset_size(formset, len(attributes))
# We had to move away from always assigning the initial value for release_corresponding_entry:
# When "changing" and existing occurrence, if the Occurrence***Attribute are not saved in the same order as the Release***Attribute of the matching Release
# (side note: this situation is treated as an error by formset clean)
# the value assigned to initial would override the release_corresponding_entry saved in the DB,
# but the associated attribute value would still be the one from the DB, causing a mismatch.
#formset.initial = [{"release_corresponding_entry": attrib} for attrib in attributes]
# Instead, we create a list of all Release***Attribute assigned to the correponding release, and remove from this list
# the Release***Attribute which already have a matchin Occurrence***Attribute saved to the DB.
attribute_list = list(attributes)
for form in formset:
rel_attrib, in_db = get_or_initial_release_corresponding_entry(
form, attribute_list, "release_corresponding_entry")
# This is very important: by default, forms in formsets have empty_permitted set to True
# Then, a form with no other value than the initial(s) would skip fields validation, not populating cleaned_data
# see: https://github.com/django/django/blob/1.8.3/django/forms/forms.py#L389
form.empty_permitted = False
form.fields["value"] = enum.Attribute.Type.to_form_field[
rel_attrib.attribute.value_type]
if not in_db:
form.initial.update({
"attribute_type":
ContentType.objects.get_for_model(rel_attrib.__class__),
"attribute_id":
rel_attrib.pk,
})
def populate_occurrence_picture_attributes_choices(formset, request, obj):
"""
Populates the any_attribute ChoiceField of OccurrencePictureForm with all attributes (incl. CustomReleaseAttributes)
available on the Release of the related occurrence. Also populates its initial data for edition form.
"""
release_id = utils_id.get_release_id(request, obj)
choices = [("", "----")]
attributes = utils.retrieve_noncustom_custom_release_attributes(release_id)
choices.extend([ ("{}_{}".format(ContentType.objects.get_for_model(attribute.__class__).pk, attribute.pk),
"{}".format(attribute),)
for attribute in attributes])
for form in formset:
form.fields["any_attribute"].choices = choices
if form.instance.attribute_id:
form.fields["any_attribute"].initial = "{}_{}".format(form.instance.attribute_type.pk, form.instance.attribute_id)
def empty_form(self):
form = super(OccurrencePictureFormSet, self).empty_form
form.fields["any_attribute"].choices = choices
return form
# The empty_formset property is used when clicking the "Add another Occurrence picture" in the web interface
# "patches" the property by subclassing, as described on SO: http://stackoverflow.com/a/31591589/1027706
class PatchedFormset(formset.__class__):
@property
def empty_form(self):
form = super(PatchedFormset, self).empty_form
form.fields["any_attribute"].choices = choices
return form
formset.__class__ = PatchedFormset
def occurrence_composition_queryset(formset, request, obj):
release_id = utils_id.get_release_id(request, obj)
if release_id == 0:
force_formset_size(formset, 0)
else:
release_compositions = retrieve_release_composition(release_id)
force_formset_size(formset, len(release_compositions))
## Does not help with saving the emtpy forms (only with their initial values)...
#formset.validate_min = True
#formset.validate_max = True
# Would not be a safe approach, see comment in populate_occurrence_attributes()
#formset.initial = [{"release_composition": compo} for compo in release_compositions]
release_compositions = list(release_compositions)
for form in formset:
release_compo, in_db = get_or_initial_release_corresponding_entry(
form, release_compositions, "release_composition")
release = release_compo.to_release
#form.empty_permitted=False ## Does not help with empty forms either
form.fields["to_occurrence"].queryset = (
Occurrence.objects.filter(
release=release
) # only propose occurrences of the right release
.filter(
Q(occurrence_composition__isnull=True
) # not already nested in another occurrence
|
Q(occurrence_composition__from_occurrence=formset.instance)
) # except if nested in this occurrence (for edit)
)
form.fields["to_occurrence"].label = "Nested {} occurrence".format(
release.name)
