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__copyright__ = "Copyright © Stichting SciPost (SciPost Foundation)"
__license__ = "AGPL v3"
from typing import Any, Dict
from django.contrib import messages
from django.db.models.query import QuerySet
from django.forms.forms import BaseForm
from django.http import HttpResponse
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from django.shortcuts import get_object_or_404, render
from django.template.response import TemplateResponse
from django.urls import reverse
from django.views.generic import CreateView, FormView, ListView
from .forms import HTMXInlineCRUDModelForm
class HTMXInlineCRUDModelFormView(FormView):
template_name = "htmx/htmx_inline_crud_form.html"
form_class = HTMXInlineCRUDModelForm
instance_li_template_name = None
target_element_id = "htmx-crud-{instance_type}-{instance_id}"
edit = False
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.instance_type = self.form_class.Meta.model.__name__.lower()
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context["target_element_id"] = self.get_target_element_id()
context["instance_li_template_name"] = self.instance_li_template_name
context[self.instance_type] = context["instance"] = self.instance
return context
def post(self, request, *args, **kwargs):
self.instance = get_object_or_404(self.form_class.Meta.model, pk=kwargs["pk"])
self.edit = True
return super().post(request, *args, **kwargs)
def get(self, request, *args, **kwargs):
self.instance = get_object_or_404(self.form_class.Meta.model, pk=kwargs["pk"])
self.edit = bool(request.GET.get("edit", None))
super().get(request, *args, **kwargs)
return render(request, self.template_name, self.get_context_data(**kwargs))
def delete(self, request, *args, **kwargs):
self.instance = get_object_or_404(self.form_class.Meta.model, pk=kwargs["pk"])
self.instance.delete()
messages.success(
self.request, f"{self.instance_type.title()} deleted successfully"
)
return empty(request)
def get_form(self) -> BaseForm:
if self.request.method == "GET" and not self.edit:
return None
return super().get_form()
def get_form_kwargs(self):
kwargs = super().get_form_kwargs()
kwargs.update({"instance": self.instance})
return kwargs
def get_target_element_id(self) -> str:
return self.target_element_id.format(
instance_type=self.instance_type,
instance_id=self.instance.id,
)
def get_success_url(self) -> str:
return self.get_context_data()["view"].request.path
def form_valid(self, form: BaseForm) -> HttpResponse:
form.save()
messages.success(
self.request, f"{self.instance_type.title()} saved successfully"
)
return super().form_valid(form)
class HTMXInlineCRUDModelListView(ListView):
template_name = "htmx/htmx_inline_crud_list.html"
add_form_class = None
model = None
model_form_view_url = None
def __init__(self, **kwargs: Any) -> None:
super().__init__(**kwargs)
self.instance_type = self.model.__name__.lower()
def _append_model_form_view_url(self, queryset: QuerySet) -> QuerySet:
for object in queryset:
object.model_form_view_url = reverse(
self.model_form_view_url, kwargs={"pk": object.pk}
)
return queryset
def post(self, request, *args, **kwargs):
if self.add_form_class is None:
return empty(request)
add_form = self.add_form_class(request.POST or None)
if add_form.is_valid():
add_form.save()
messages.success(self.request, f"{self.instance_type.title()} successfully")
return TemplateResponse(
request,
"htmx/htmx_inline_crud_new_form.html",
{
"post_url": request.path,
"add_form": add_form,
"instance_type": self.instance_type,
},
)
def get_context_data(self, **kwargs: Any):
context = super().get_context_data(**kwargs)
context["post_url"] = self.request.path
context["instance_type"] = self.instance_type
return context
def empty(request):
return HttpResponse("")