add new pelican and code metrics resources

mattmakai · mattmakai · commit a2424e1ed99e · 2019-07-20T10:21:30.000-04:00
diff --git a/content/pages/04-web-development/32-pelican.markdown b/content/pages/04-web-development/32-pelican.markdown
@@ -68,6 +68,10 @@ to hosting services such as Amazon S3 and GitHub Pages.
   an initial site then adds the Tipue Search plugin to provide content
   search despite the static site limitations.
 
+* [Pelican Folder Structure](http://archerimagine.com/articles/pelican/pelican-folder-structure.html)
+  explains how the `pages` and `posts` structure under `content`
+  works when using Pelican.
+
 * [Pelican's official Plugin creation documentation](http://docs.getpelican.com/en/3.7.1/plugins.html)
   gives a great starting point for building your own plugins that can
   take in new input markup formats, modify the generator process and
@@ -88,3 +92,4 @@ to hosting services such as Amazon S3 and GitHub Pages.
 * [Using Travis & GitHub to deploy static sites](http://www.gregreda.com/2015/03/26/static-site-deployments/)
   shows how to automate deployments of a Pelican-based static site using
   Travis CI.
+
diff --git a/content/pages/04-web-development/39-code-metrics.markdown b/content/pages/04-web-development/39-code-metrics.markdown
@@ -149,3 +149,6 @@ diminishing returns.
   is a super short introduction on what Black does to keep your code
   formatting consistent.
 
+* [Intro to Black – The Uncompromising Python Code Formatter](http://www.blog.pythonlibrary.org/2019/07/16/intro-to-black-the-uncompromising-python-code-formatter/)
+  contains some introductory examples for using Black and shows how to
+  use it on your source files.
diff --git a/content/pages/examples/django/django-conf-settings-examples.markdown b/content/pages/examples/django/django-conf-settings-examples.markdown
@@ -400,3 +400,70 @@ FILER_SERVERS = RecursiveDictionaryWithExcludes(MINIMAL_FILER_SERVERS,
 # too different from what was shown above
 ```
 
+
+## Example 3 from django-cors-headers
+[django-cors-headers](https://github.com/ottoyiu/django-cors-headers) is
+an 
+[open source](https://github.com/ottoyiu/django-cors-headers/blob/master/LICENSE)
+library for enabling 
+[Cross-Origin Resource Sharing (CORS)](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) 
+handling in your [Django](/django.html) web applications and appropriately
+dealing with HTTP headers for CORS requests.
+
+[**django-cors-headers / corsheaders / conf.py**](https://github.com/ottoyiu/django-cors-headers/blob/master/corsheaders/conf.py)
+
+```python
+~~from django.conf import settings
+
+# Kept here for backwards compatibility
+from corsheaders.defaults import default_headers, default_methods
+
+
+class Settings(object):
+    """
+    Shadow Django's settings with a little logic
+    """
+
+    @property
+    def CORS_ALLOW_HEADERS(self):
+~~        return getattr(settings, "CORS_ALLOW_HEADERS", default_headers)
+
+    @property
+    def CORS_ALLOW_METHODS(self):
+~~        return getattr(settings, "CORS_ALLOW_METHODS", default_methods)
+
+    @property
+    def CORS_ALLOW_CREDENTIALS(self):
+~~        return getattr(settings, "CORS_ALLOW_CREDENTIALS", False)
+
+    @property
+    def CORS_PREFLIGHT_MAX_AGE(self):
+~~        return getattr(settings, "CORS_PREFLIGHT_MAX_AGE", 86400)
+
+    @property
+    def CORS_ORIGIN_ALLOW_ALL(self):
+~~        return getattr(settings, "CORS_ORIGIN_ALLOW_ALL", False)
+
+    @property
+    def CORS_ORIGIN_WHITELIST(self):
+~~        return getattr(settings, "CORS_ORIGIN_WHITELIST", ())
+
+    @property
+    def CORS_ORIGIN_REGEX_WHITELIST(self):
+~~        return getattr(settings, "CORS_ORIGIN_REGEX_WHITELIST", ())
+
+    @property
+    def CORS_EXPOSE_HEADERS(self):
+~~        return getattr(settings, "CORS_EXPOSE_HEADERS", ())
+
+    @property
+    def CORS_URLS_REGEX(self):
+~~        return getattr(settings, "CORS_URLS_REGEX", r"^.*$")
+
+    @property
+    def CORS_REPLACE_HTTPS_REFERER(self):
+~~        return getattr(settings, "CORS_REPLACE_HTTPS_REFERER", False)
+
+
+conf = Settings()
+```
diff --git a/content/pages/examples/django/django-dispatch-dispatcher-signal.markdown b/content/pages/examples/django/django-dispatch-dispatcher-signal.markdown
@@ -164,3 +164,24 @@ def login_user(sender, user, request, **kwargs):
 if getattr(settings, 'REGISTRATION_AUTO_LOGIN', False):
     user_activated.connect(login_user)
 ```
+
+
+## Example 6 from django-cors-headers
+[django-cors-headers](https://github.com/ottoyiu/django-cors-headers) is
+an 
+[open source](https://github.com/ottoyiu/django-cors-headers/blob/master/LICENSE)
+library for enabling 
+[Cross-Origin Resource Sharing (CORS)](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS) 
+handling in your [Django](/django.html) web applications and appropriately
+dealing with HTTP headers for CORS requests.
+
+[**django-cors-headers / corsheaders / signals.py**](https://github.com/ottoyiu/django-cors-headers/blob/master/corsheaders/signals.py)
+
+```python
+~~from django.dispatch import Signal
+
+# If any attached handler returns Truthy, CORS will be allowed for the request.
+# This can be used to build custom logic into the request handling when the
+# configuration doesn't work.
+~~check_request_enabled = Signal(providing_args=["request"])
+```
