Messy but working save confirmation on change page

.gitignore

@@ -29,3 +29,6 @@ docs/_build/
 
 # pycharm
 .idea/
+
+# Database
+db.sqlite3

MANIFEST.in

@@ -0,0 +1,2 @@
+include *.rst
+recursive-include admin-confirm/*

admin_confirm/admin.py

@@ -0,0 +1,128 @@
+
+from django.contrib.admin.exceptions import DisallowedModelAdminToField
+from django.contrib.admin.utils import flatten_fieldsets, quote, unquote
+from django.core.exceptions import PermissionDenied
+from django.template.response import SimpleTemplateResponse, TemplateResponse
+from django.contrib.admin.options import TO_FIELD_VAR, IS_POPUP_VAR
+from django.utils.translation import gettext as _, ngettext
+
+
+class AdminConfirmMixin(object):
+    """Generic AdminConfirm Mixin"""
+
+    change_needs_confirmation = False
+
+    # Custom templates (designed to be over-ridden in subclasses)
+    change_confirmation_template = None
+
+    def render_change_confirmation(self, request, context):
+        opts = self.model._meta
+        app_label = opts.app_label
+
+        request.current_app = self.admin_site.name
+        context.update(
+            media=self.media,
+        )
+
+        return TemplateResponse(
+            request,
+            self.change_confirmation_template
+            or [
+                "admin/{}/{}/change_confirmation.html".format(
+                    app_label, opts.model_name
+                ),
+                "admin/{}/change_confirmation.html".format(app_label),
+                "admin/change_confirmation.html",
+            ],
+            context,
+        )
+
+    def change_view(self, request, object_id=None, form_url="", extra_context=None):
+        self.message_user(request, f"{request.POST}")
+        if request.method == "POST" and request.POST.get("_change_needs_confirmation"):
+            self.message_user(request, "Needs confirmation was inside the request")
+            return self._change_confirmation_view(
+                request, object_id, form_url, extra_context
+            )
+
+        extra_context = {
+            **(extra_context or {}),
+            'change_needs_confirmation': self.change_needs_confirmation
+        }
+        return super().change_view(request, object_id, form_url, extra_context)
+
+    def _change_confirmation_view(self, request, object_id, form_url, extra_context):
+        # Do we need any of this code?
+        to_field = request.POST.get(
+            TO_FIELD_VAR, request.GET.get(TO_FIELD_VAR)
+        )
+        if to_field and not self.to_field_allowed(request, to_field):
+            raise DisallowedModelAdminToField(
+                "The field %s cannot be referenced." % to_field
+            )
+
+        model = self.model
+        opts = model._meta
+
+        add = object_id is None
+
+        obj = self.get_object(request, unquote(object_id), to_field)
+
+        if obj is None:
+            return self._get_obj_does_not_exist_redirect(request, opts, object_id)
+
+        if not self.has_view_or_change_permission(request, obj):
+            raise PermissionDenied
+
+        fieldsets = self.get_fieldsets(request, obj)
+        ModelForm = self.get_form(
+            request, obj, change=not add, fields=flatten_fieldsets(fieldsets)
+        )
+
+        # Should we be validating the data here? Or just pass it to super?
+
+        form = ModelForm(request.POST, request.FILES, obj)
+        form_validated = form.is_valid()
+        if form_validated:
+            new_object = self.save_form(request, form, change=not add)
+        else:
+            new_object = form.instance
+
+        # End code copied from Django sourcecode
+        if add:
+            title = _("Add %s")
+        elif self.has_change_permission(request, obj):
+            title = _("Change %s")
+
+        # Parse the original save action from request
+        save_action = None
+        for action in ["_save", "_saveasnew", "_addanother", "_continue"]:
+            if action in request.POST:
+                save_action = action
+                break
+
+        form_data = {}
+        for key in request.POST:
+            if key.startswith("_") or key == 'csrfmiddlewaretoken':
+                continue
+
+            form_data[key] = request.POST.get(key)
+        # { k: v for k, v in request.POST.\\ if not(k.startswith('_') or k == 'csrfmiddlewaretoken')}
+
+        context = {
+            **self.admin_site.each_context(request),
+            "title": title % opts.verbose_name,
+            "subtitle": str(obj),
+            "object_name": str(obj),
+            "object_id": object_id,
+            "original": obj,
+            "new_object": new_object,
+            "app_label": opts.app_label,
+            "model_name": opts.model_name,
+            "opts": opts,
+            "preserved_filters": self.get_preserved_filters(request),
+            "form_data": form_data,
+            "submit_name": save_action,
+            **(extra_context or {}),
+        }
+        return self.render_change_confirmation(request, context)

admin_confirm/template_tags/admin_modify.py

@@ -0,0 +1,18 @@
+# import json
+#
+# from django import template
+# from django.template.context import Context
+#
+# from django.contrib.admin.templatetags import admin_modify
+#
+# from django.contrib.admin.templatetags.base import InclusionAdminNode
+#
+# register = template.Library()
+#
+# def submit_row(context):
+#     ctx = admin_modify.submit_row(context)
+#
+#
+# @register.tag(name='submit_row')
+# def submit_row_tag(parser, token):
+#     return InclusionAdminNode(parser, token, func=submit_row, template_name='submit_line.html')

admin_confirm/templates/admin/change_confirmation.html

@@ -0,0 +1,36 @@
+{% extends "admin/base_site.html" %}
+{% load i18n admin_urls static %}
+
+{% block extrahead %}
+    {{ block.super }}
+    {{ media }}
+    <script src="{% static 'admin/js/cancel.js' %}" async></script>
+{% endblock %}
+
+{% block bodyclass %}{{ block.super }} app-{{ opts.app_label }} model-{{ opts.model_name }} change-confirmation{% endblock %}
+
+{% block breadcrumbs %}
+<div class="breadcrumbs">
+<a href="{% url 'admin:index' %}">{% trans 'Home' %}</a>
+&rsaquo; <a href="{% url 'admin:app_list' app_label=opts.app_label %}">{{ opts.app_config.verbose_name }}</a>
+&rsaquo; <a href="{% url opts|admin_urlname:'changelist' %}">{{ opts.verbose_name_plural|capfirst }}</a>
+&rsaquo; <a href="{% url opts|admin_urlname:'change' object_id|admin_urlquote %}">{{ object|truncatewords:"18" }}</a>
+&rsaquo; {% trans 'Change Confirmation' %}
+</div>
+{% endblock %}
+
+{% block content %}
+  <p>{% blocktrans with escaped_object=object %}Are you sure you want to change the {{ object_name }} "{{ escaped_object }}"?{% endblocktrans %}</p>
+  <form method="post" action="{% url opts|admin_urlname:'change' object_id|admin_urlquote %}">{% csrf_token %}
+  <div>
+    {% for key, value in form_data.items %}
+        <input type="hidden" name="{{ key }}" value="{{ value }}">
+    {% endfor %}
+{#  <input type="hidden" name="post" value="yes">#}
+  {% if is_popup %}<input type="hidden" name="{{ is_popup_var }}" value="1">{% endif %}
+  {% if to_field %}<input type="hidden" name="{{ to_field_var }}" value="{{ to_field }}">{% endif %}
+  <input type="submit" value="{% trans 'Yes, I’m sure' %}" name="{{ submit_name }}">
+  <a href="#" class="button cancel-link">{% trans "No, continue to edit" %}</a>
+  </div>
+  </form>
+{% endblock %}

admin_confirm/templates/admin/submit_line.html

@@ -0,0 +1,7 @@
+{% extends 'admin/submit_line.html'  %}
+{% load i18n admin_urls %}
+
+{% block submit-row %}
+    <input hidden name="_change_needs_confirmation" value="{{ change_needs_confirmation }}" />
+    {{ block.super }}
+{% endblock %}

setup.py

@@ -0,0 +1,20 @@
+import os
+from setuptools import setup
+
+here = os.path.abspath(os.path.dirname(__file__))
+README = open(os.path.join(here, 'README.rst')).read()
+
+setup(
+    name='django-admin-confirm',
+    version='0.1',
+    packages=['admin_confirm'],
+    description='Adds confirmation to Django Admin change',
+    long_description=README,
+    author='Thu Trang Pham',
+    author_email='thuutrangpham@gmail.com',
+    url='https://github.com/trangpham/django-admin-confirm/',
+    license='Apache 2.0',
+    install_requires=[
+        'Django>=1.7',
+    ]
+)

tests/testproject/asgi.py

@@ -1,16 +0,0 @@
-"""
-ASGI config for testproject project.
-
-It exposes the ASGI callable as a module-level variable named ``application``.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/3.0/howto/deployment/asgi/
-"""
-
-import os
-
-from django.core.asgi import get_asgi_application
-
-os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'testproject.settings')
-
-application = get_asgi_application()

tests/testproject/settings.py

@@ -13,7 +13,7 @@ https://docs.djangoproject.com/en/3.0/ref/settings/
 import os
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
-BASE_DIR = os.path.dirname(os.path.abspath(__file__))
+BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
 
 # Quick-start development settings - unsuitable for production
@@ -31,6 +31,8 @@ ALLOWED_HOSTS = ['127.0.0.1']
 # Application definition
 
 INSTALLED_APPS = [
+    'admin_confirm',
+
     'django.contrib.admin',
     'django.contrib.auth',
     'django.contrib.contenttypes',
@@ -38,9 +40,7 @@ INSTALLED_APPS = [
     'django.contrib.messages',
     'django.contrib.staticfiles',
 
-    'admin_confirm',
+    'market',
-
-    'tests.market',
 ]
 
 MIDDLEWARE = [
@@ -53,7 +53,7 @@ MIDDLEWARE = [
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
 ]
 
-ROOT_URLCONF = 'tests.testproject.urls'
+ROOT_URLCONF = 'testproject.urls'
 
 TEMPLATES = [
     {
@@ -71,7 +71,7 @@ TEMPLATES = [
     },
 ]
 
-WSGI_APPLICATION = 'tests.testproject.wsgi.application'
+WSGI_APPLICATION = 'testproject.wsgi.application'
 
 
 # Database