From aacdc293949903cff006f5c145b63c600b479ab3 Mon Sep 17 00:00:00 2001
From: FinnStutzenstein <finn.stutzenstein@hotmail.de>
Date: Tue, 6 Feb 2018 08:04:31 +0100
Subject: [PATCH] Added --no-template-caching

---
 CHANGELOG                     |  3 +++
 openslides/__main__.py        |  8 +++++++-
 openslides/utils/arguments.py | 25 +++++++++++++++++++++++++
 openslides/utils/views.py     |  5 ++++-
 4 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 openslides/utils/arguments.py

diff --git a/CHANGELOG b/CHANGELOG
index 631e21553..e9e28f1c5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -118,6 +118,9 @@ Core:
 - Removed unnecessary OPTIONS request in config [#3541].
 - Added possibility to upload custom fonts for projector and pdf [#3568].
 - Use custom format cleanup plugin for CKEditor [#3576].
+- Added --debug-email flag to print all emails to stdout [#3530].
+- Added --no-template-caching flag to disable template caching for
+  easier development [#3566].
 
 Mediafiles:
 - Fixed reloading of PDF on page change [#3274].
diff --git a/openslides/__main__.py b/openslides/__main__.py
index cf65e8480..d162cebb2 100644
--- a/openslides/__main__.py
+++ b/openslides/__main__.py
@@ -9,6 +9,7 @@ import django
 from django.core.management import call_command, execute_from_command_line
 
 import openslides
+from openslides.utils.arguments import arguments
 from openslides.utils.main import (
     ExceptionArgumentParser,
     UnknownCommand,
@@ -45,7 +46,7 @@ def main():
             parser.error('Unknown arguments {}'.format(' '.join(unknown_args)))
 
         # Save arguments, if one wants to access them later.
-        openslides.args = known_args
+        arguments.set_arguments(known_args)
 
         # Run a command that is defined here
         # These are commands that can not rely on an existing settings
@@ -115,6 +116,11 @@ def get_parser():
         '--debug-email',
         action='store_true',
         help='Change the email backend to console output.')
+    subcommand_start.add_argument(
+        '--no-template-caching',
+        action='store_true',
+        default=False,
+        help='Disables caching of templates.')
     subcommand_start.add_argument(
         '--host',
         action='store',
diff --git a/openslides/utils/arguments.py b/openslides/utils/arguments.py
new file mode 100644
index 000000000..cfd0d99f3
--- /dev/null
+++ b/openslides/utils/arguments.py
@@ -0,0 +1,25 @@
+from argparse import Namespace
+from typing import Any, Union  # noqa
+
+
+class OpenSlidesArguments():
+    args = None  # type: Union[None, Namespace]
+
+    def __getitem__(self, key: str) -> Any:
+        if not self.args:
+            raise KeyError("Arguments are not set.")
+        if not hasattr(self.args, key):
+            raise KeyError("Key '{}' is not in the OpenSlides arguments.".format(key))
+        return getattr(self.args, key)
+
+    def get(self, key: str, default: Any) -> Any:
+        if not self.args or not hasattr(self.args, key):
+            return default
+        else:
+            return getattr(self.args, key)
+
+    def set_arguments(self, args: Namespace) -> None:
+        self.args = args
+
+
+arguments = OpenSlidesArguments()
diff --git a/openslides/utils/views.py b/openslides/utils/views.py
index 6da9b231b..932162202 100644
--- a/openslides/utils/views.py
+++ b/openslides/utils/views.py
@@ -9,6 +9,8 @@ from django.views.generic.base import View
 from rest_framework.response import Response
 from rest_framework.views import APIView as _APIView
 
+from .arguments import arguments
+
 
 class CSRFMixin:
     """
@@ -67,7 +69,8 @@ class TemplateView(View):
         if self.template_name is None:
             raise ImproperlyConfigured("'template_name' is not provided.")
 
-        if self.template_name not in self.state:
+        no_caching = arguments.get('no_template_caching', False)
+        if self.template_name not in self.state or no_caching:
             self.state[self.template_name] = self.load_template()
 
     def load_template(self) -> str: