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342 lines
12 KiB
Python
342 lines
12 KiB
Python
import uuid
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from django.core.exceptions import ImproperlyConfigured
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from django.core.paginator import Paginator
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from django.db.models import QuerySet
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from django.http import Http404, HttpResponseBadRequest
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from django.urls import reverse
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from django.views.generic.detail import DetailView
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from django.views.generic.edit import CreateView, DeleteView, UpdateView
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from django.views.generic.list import ListView
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from rest_framework.parsers import FormParser
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from core.util import logs
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log = logs.get_logger(__name__)
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class RestrictedViewMixin:
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"""
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This mixin overrides two helpers in order to pass the user object to the filters.
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get_queryset alters the objects returned for list views.
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get_form_kwargs passes the request object to the form class. Remaining permissions
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checks are in forms.py
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"""
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allow_empty = True
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queryset = None
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model = None
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paginate_by = None
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paginate_orphans = 0
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context_object_name = None
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paginator_class = Paginator
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page_kwarg = "page"
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ordering = None
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def get_queryset(self):
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"""
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This function is overriden to filter the objects by the requesting user.
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"""
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if self.queryset is not None:
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queryset = self.queryset
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if isinstance(queryset, QuerySet):
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# queryset = queryset.all()
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queryset = queryset.filter(user=self.request.user)
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elif self.model is not None:
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queryset = self.model._default_manager.filter(user=self.request.user)
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else:
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raise ImproperlyConfigured(
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"%(cls)s is missing a QuerySet. Define "
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"%(cls)s.model, %(cls)s.queryset, or override "
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"%(cls)s.get_queryset()." % {"cls": self.__class__.__name__}
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)
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if hasattr(self, "get_ordering"):
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ordering = self.get_ordering()
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if ordering:
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if isinstance(ordering, str):
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ordering = (ordering,)
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queryset = queryset.order_by(*ordering)
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return queryset
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def get_form_kwargs(self):
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"""Passes the request object to the form class.
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This is necessary to only display members that belong to a given user"""
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kwargs = super().get_form_kwargs()
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kwargs["request"] = self.request
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return kwargs
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class ObjectNameMixin(object):
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def __init__(self, *args, **kwargs):
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self.title_singular = self.model._meta.verbose_name.title() # Hook
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self.context_object_name_singular = self.title_singular.lower() # hook
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self.title = self.model._meta.verbose_name_plural.title() # Hooks
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self.context_object_name = self.title.lower() # hooks
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self.context_object_name = self.context_object_name.replace(" ", "")
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self.context_object_name_singular = self.context_object_name_singular.replace(
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" ", ""
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)
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super().__init__(*args, **kwargs)
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class ObjectList(RestrictedViewMixin, ObjectNameMixin, ListView):
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allowed_types = ["modal", "widget", "window", "page"]
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window_content = "window-content/objects.html"
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list_template = None
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page_title = None
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page_subtitle = None
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list_url_name = None
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# WARNING: TAKEN FROM locals()
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list_url_args = ["type"]
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submit_url_name = None
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delete_all_url_name = None
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# copied from BaseListView
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def get(self, request, *args, **kwargs):
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self.request = request
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self.object_list = self.get_queryset()
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allow_empty = self.get_allow_empty()
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type = kwargs.get("type", None)
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if not type:
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return HttpResponseBadRequest("No type specified")
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if type not in self.allowed_types:
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return HttpResponseBadRequest("Invalid type specified")
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self.template_name = f"wm/{type}.html"
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unique = str(uuid.uuid4())[:8]
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list_url_args = {}
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for arg in self.list_url_args:
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list_url_args[arg] = locals()[arg]
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orig_type = type
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if type == "page":
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type = "modal"
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if not allow_empty:
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# When pagination is enabled and object_list is a queryset,
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# it's better to do a cheap query than to load the unpaginated
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# queryset in memory.
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if self.get_paginate_by(self.object_list) is not None and hasattr(
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self.object_list, "exists"
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):
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is_empty = not self.object_list.exists()
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else:
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is_empty = not self.object_list
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if is_empty:
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raise Http404("Empty list")
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submit_url = reverse(self.submit_url_name, kwargs={"type": type})
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list_url = reverse(self.list_url_name, kwargs=list_url_args)
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context = self.get_context_data()
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context["title"] = self.title + f" ({type})"
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context["title_singular"] = self.title_singular
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context["unique"] = unique
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context["window_content"] = self.window_content
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context["list_template"] = self.list_template
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context["page_title"] = self.page_title
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context["page_subtitle"] = self.page_subtitle
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context["type"] = type
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context["submit_url"] = submit_url
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context["list_url"] = list_url
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context["context_object_name"] = self.context_object_name
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context["context_object_name_singular"] = self.context_object_name_singular
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if self.delete_all_url_name:
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context["delete_all_url"] = reverse(self.delete_all_url_name)
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# Return partials for HTMX
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if self.request.htmx:
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if orig_type == "page":
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self.template_name = self.list_template
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else:
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context["window_content"] = self.list_template
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return self.render_to_response(context)
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class ObjectCreate(RestrictedViewMixin, ObjectNameMixin, CreateView):
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allowed_types = ["modal", "widget", "window", "page"]
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window_content = "window-content/object-form.html"
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parser_classes = [FormParser]
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model = None
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submit_url_name = None
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list_url_name = None
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# WARNING: TAKEN FROM locals()
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list_url_args = ["type"]
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request = None
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def post_save(self, obj):
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pass
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def form_valid(self, form):
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obj = form.save(commit=False)
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if self.request is None:
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raise Exception("Request is None")
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obj.user = self.request.user
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obj.save()
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form.save_m2m()
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self.post_save(obj)
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context = {"message": "Object created", "class": "success"}
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response = self.render_to_response(context)
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response["HX-Trigger"] = f"{self.context_object_name_singular}Event"
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return response
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def form_invalid(self, form):
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"""If the form is invalid, render the invalid form."""
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return self.get(self.request, **self.kwargs, form=form)
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def get(self, request, *args, **kwargs):
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self.request = request
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self.kwargs = kwargs
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type = kwargs.get("type", None)
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if not type:
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return HttpResponseBadRequest("No type specified")
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if type not in self.allowed_types:
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return HttpResponseBadRequest("Invalid type specified")
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self.template_name = f"wm/{type}.html"
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unique = str(uuid.uuid4())[:8]
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list_url_args = {}
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for arg in self.list_url_args:
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list_url_args[arg] = locals()[arg]
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if type == "page":
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type = "modal"
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self.object = None
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submit_url = reverse(self.submit_url_name, kwargs={"type": type})
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list_url = reverse(self.list_url_name, kwargs=list_url_args)
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context = self.get_context_data()
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form = kwargs.get("form", None)
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if form:
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context["form"] = form
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context["unique"] = unique
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context["window_content"] = self.window_content
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context["context_object_name"] = self.context_object_name
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context["context_object_name_singular"] = self.context_object_name_singular
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context["submit_url"] = submit_url
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context["list_url"] = list_url
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context["type"] = type
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response = self.render_to_response(context)
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# response["HX-Trigger"] = f"{self.context_object_name_singular}Event"
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return response
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def post(self, request, *args, **kwargs):
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self.request = request
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self.template_name = "partials/notify.html"
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return super().post(request, *args, **kwargs)
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class ObjectRead(RestrictedViewMixin, ObjectNameMixin, DetailView):
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allowed_types = ["modal", "widget", "window", "page"]
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window_content = "window-content/object.html"
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model = None
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class ObjectUpdate(RestrictedViewMixin, ObjectNameMixin, UpdateView):
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allowed_types = ["modal", "widget", "window", "page"]
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window_content = "window-content/object-form.html"
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parser_classes = [FormParser]
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model = None
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submit_url_name = None
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request = None
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def post_save(self, obj):
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pass
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def form_valid(self, form):
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obj = form.save(commit=False)
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if self.request is None:
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raise Exception("Request is None")
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obj.save()
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form.save_m2m()
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self.post_save(obj)
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context = {"message": "Object updated", "class": "success"}
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response = self.render_to_response(context)
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response["HX-Trigger"] = f"{self.context_object_name_singular}Event"
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return response
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def form_invalid(self, form):
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"""If the form is invalid, render the invalid form."""
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return self.get(self.request, **self.kwargs, form=form)
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def get(self, request, *args, **kwargs):
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self.request = request
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type = kwargs.get("type", None)
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pk = kwargs.get("pk", None)
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if not type:
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return HttpResponseBadRequest("No type specified")
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if not pk:
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return HttpResponseBadRequest("No pk specified")
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if type not in self.allowed_types:
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return HttpResponseBadRequest("Invalid type specified")
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self.template_name = f"wm/{type}.html"
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unique = str(uuid.uuid4())[:8]
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if type == "page":
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type = "modal"
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self.object = self.get_object()
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submit_url = reverse(self.submit_url_name, kwargs={"type": type, "pk": pk})
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context = self.get_context_data()
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form = kwargs.get("form", None)
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if form:
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context["form"] = form
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context["unique"] = unique
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context["window_content"] = self.window_content
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context["context_object_name"] = self.context_object_name
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context["context_object_name_singular"] = self.context_object_name_singular
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context["submit_url"] = submit_url
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context["type"] = type
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response = self.render_to_response(context)
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# response["HX-Trigger"] = f"{self.context_object_name_singular}Event"
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return response
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def post(self, request, *args, **kwargs):
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self.request = request
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self.template_name = "partials/notify.html"
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return super().post(request, *args, **kwargs)
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class ObjectDelete(RestrictedViewMixin, ObjectNameMixin, DeleteView):
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model = None
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template_name = "partials/notify.html"
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# Overriden to prevent success URL from being used
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def delete(self, request, *args, **kwargs):
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"""
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Call the delete() method on the fetched object and then redirect to the
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success URL.
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"""
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self.object = self.get_object()
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# success_url = self.get_success_url()
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self.object.delete()
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context = {"message": "Object deleted", "class": "success"}
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response = self.render_to_response(context)
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response["HX-Trigger"] = f"{self.context_object_name_singular}Event"
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return response
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# This will be used in newer Django versions, until then we get a warning
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def form_valid(self, form):
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"""
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Call the delete() method on the fetched object.
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"""
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self.object = self.get_object()
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self.object.delete()
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context = {"message": "Object deleted", "class": "success"}
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response = self.render_to_response(context)
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response["HX-Trigger"] = f"{self.context_object_name_singular}Event"
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return response
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