HTML code for sharing #1165 -> #5269 -> #5274: SubdomainMiddleware. Теперь понимает GET-параметры и HTTPS. source code

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<div class="highlight" style="background: #f8f8f8"><pre style="line-height: 125%"><div id="lc1">class SubdomainMiddleware(object):
</div><div id="lc2"> def process_request(self, request):
</div><div id="lc3">	if request.is_ajax():
</div><div id="lc4">	 return None
</div><div id="lc5">	try:
</div><div id="lc6">	 site = Site.objects.get_current()
</div><div id="lc7">	except:
</div><div id="lc8">	 return None
</div><div id="lc9">	host = request.get_host()
</div><div id="lc10">	if host != site.domain:
</div><div id="lc11">	 full_uri = &#39;%s://%s%s&#39; % (request.is_secure() and &#39;https&#39; or &#39;http&#39;, site.domain, request.get_full_path())
</div><div id="lc12">	 if host.endswith(&#39;.&#39; + site.domain):
</div><div id="lc13">		subdomain = host[:host.index(&#39;.&#39;)].replace(&#39;-&#39;, &#39;_&#39;)
</div><div id="lc14">		if subdomain not in settings.DENIED_SUBDOMAINS:
</div><div id="lc15">		 try:
</div><div id="lc16">			callback, callback_args, callback_kwargs = resolve(request.path, settings.SUBDOMAINS_ROOT_URLCONF)
</div><div id="lc17">		 except Resolver404, e:
</div><div id="lc18">			return HttpResponseRedirect(full_uri)
</div><div id="lc19">		 except Exception, e:
</div><div id="lc20">			if settings.DEBUG:
</div><div id="lc21">			 return technical_500_response(request, *exc_info())
</div><div id="lc22">			return server_error(request)
</div><div id="lc23">		 else:
</div><div id="lc24">			callback_kwargs.update({&#39;user&#39;: subdomain})
</div><div id="lc25">			try:
</div><div id="lc26">			 return callback(request, *callback_args, **callback_kwargs)
</div><div id="lc27">			except Exception, e:
</div><div id="lc28">			 if settings.DEBUG:
</div><div id="lc29">				return technical_500_response(request, *exc_info())
</div><div id="lc30">			 return server_error(request)
</div><div id="lc31">	 return HttpResponseRedirect(full_uri)
</div></pre></div>
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[color=#008000][b]class[/b][/color] [color=#0000FF][b]SubdomainMiddleware[/b][/color]([color=#008000]object[/color]):
    [color=#008000][b]def[/b][/color] [color=#0000FF]process_request[/color]([color=#008000]self[/color], request):
	[color=#008000][b]if[/b][/color] request[color=#666666].[/color]is_ajax():
	    [color=#008000][b]return[/b][/color] [color=#008000]None[/color]
	[color=#008000][b]try[/b][/color]:
	    site [color=#666666]=[/color] Site[color=#666666].[/color]objects[color=#666666].[/color]get_current()
	[color=#008000][b]except[/b][/color]:
	    [color=#008000][b]return[/b][/color] [color=#008000]None[/color]
	host [color=#666666]=[/color] request[color=#666666].[/color]get_host()
	[color=#008000][b]if[/b][/color] host [color=#666666]!=[/color] site[color=#666666].[/color]domain:
	    full_uri [color=#666666]=[/color] [color=#BA2121]'[/color][color=#BB6688][b]%s[/b][/color][color=#BA2121]://[/color][color=#BB6688][b]%s%s[/b][/color][color=#BA2121]'[/color] [color=#666666]%[/color] (request[color=#666666].[/color]is_secure() [color=#AA22FF][b]and[/b][/color] [color=#BA2121]'https'[/color] [color=#AA22FF][b]or[/b][/color] [color=#BA2121]'http'[/color], site[color=#666666].[/color]domain, request[color=#666666].[/color]get_full_path())
	    [color=#008000][b]if[/b][/color] host[color=#666666].[/color]endswith([color=#BA2121]'.'[/color] [color=#666666]+[/color] site[color=#666666].[/color]domain):
		subdomain [color=#666666]=[/color] host[:host[color=#666666].[/color]index([color=#BA2121]'.'[/color])][color=#666666].[/color]replace([color=#BA2121]'-'[/color], [color=#BA2121]'_'[/color])
		[color=#008000][b]if[/b][/color] subdomain [color=#AA22FF][b]not[/b][/color] [color=#AA22FF][b]in[/b][/color] settings[color=#666666].[/color]DENIED_SUBDOMAINS:
		    [color=#008000][b]try[/b][/color]:
			callback, callback_args, callback_kwargs [color=#666666]=[/color] resolve(request[color=#666666].[/color]path, settings[color=#666666].[/color]SUBDOMAINS_ROOT_URLCONF)
		    [color=#008000][b]except[/b][/color] Resolver404, e:
			[color=#008000][b]return[/b][/color] HttpResponseRedirect(full_uri)
		    [color=#008000][b]except[/b][/color] [color=#D2413A][b]Exception[/b][/color], e:
			[color=#008000][b]if[/b][/color] settings[color=#666666].[/color]DEBUG:
			    [color=#008000][b]return[/b][/color] technical_500_response(request, [color=#666666]*[/color]exc_info())
			[color=#008000][b]return[/b][/color] server_error(request)
		    [color=#008000][b]else[/b][/color]:
			callback_kwargs[color=#666666].[/color]update({[color=#BA2121]'user'[/color]: subdomain})
			[color=#008000][b]try[/b][/color]:
			    [color=#008000][b]return[/b][/color] callback(request, [color=#666666]*[/color]callback_args, [color=#666666]**[/color]callback_kwargs)
			[color=#008000][b]except[/b][/color] [color=#D2413A][b]Exception[/b][/color], e:
			    [color=#008000][b]if[/b][/color] settings[color=#666666].[/color]DEBUG:
				[color=#008000][b]return[/b][/color] technical_500_response(request, [color=#666666]*[/color]exc_info())
			    [color=#008000][b]return[/b][/color] server_error(request)
	    [color=#008000][b]return[/b][/color] HttpResponseRedirect(full_uri)

--------------------------------------
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That method generates HTML with CSS classes. Hence you'll need the style sheet file

<div class="highlight"><pre><div id="lc1">class SubdomainMiddleware(object):
</div><div id="lc2"> def process_request(self, request):
</div><div id="lc3">	if request.is_ajax():
</div><div id="lc4">	 return None
</div><div id="lc5">	try:
</div><div id="lc6">	 site = Site.objects.get_current()
</div><div id="lc7">	except:
</div><div id="lc8">	 return None
</div><div id="lc9">	host = request.get_host()
</div><div id="lc10">	if host != site.domain:
</div><div id="lc11">	 full_uri = &#39;%s://%s%s&#39; % (request.is_secure() and &#39;https&#39; or &#39;http&#39;, site.domain, request.get_full_path())
</div><div id="lc12">	 if host.endswith(&#39;.&#39; + site.domain):
</div><div id="lc13">		subdomain = host[:host.index(&#39;.&#39;)].replace(&#39;-&#39;, &#39;_&#39;)
</div><div id="lc14">		if subdomain not in settings.DENIED_SUBDOMAINS:
</div><div id="lc15">		 try:
</div><div id="lc16">			callback, callback_args, callback_kwargs = resolve(request.path, settings.SUBDOMAINS_ROOT_URLCONF)
</div><div id="lc17">		 except Resolver404, e:
</div><div id="lc18">			return HttpResponseRedirect(full_uri)
</div><div id="lc19">		 except Exception, e:
</div><div id="lc20">			if settings.DEBUG:
</div><div id="lc21">			 return technical_500_response(request, *exc_info())
</div><div id="lc22">			return server_error(request)
</div><div id="lc23">		 else:
</div><div id="lc24">			callback_kwargs.update({&#39;user&#39;: subdomain})
</div><div id="lc25">			try:
</div><div id="lc26">			 return callback(request, *callback_args, **callback_kwargs)
</div><div id="lc27">			except Exception, e:
</div><div id="lc28">			 if settings.DEBUG:
</div><div id="lc29">				return technical_500_response(request, *exc_info())
</div><div id="lc30">			 return server_error(request)
</div><div id="lc31">	 return HttpResponseRedirect(full_uri)
</div></pre></div>
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<blockquote><code>class&nbsp;SubdomainMiddleware(object):
&nbsp;&nbsp;&nbsp;&nbsp;def&nbsp;process_request(self,&nbsp;request):
&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;request.is_ajax():
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;None
&nbsp;&nbsp;&nbsp;&nbsp;try:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;site&nbsp;=&nbsp;Site.objects.get_current()
&nbsp;&nbsp;&nbsp;&nbsp;except:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;None
&nbsp;&nbsp;&nbsp;&nbsp;host&nbsp;=&nbsp;request.get_host()
&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;host&nbsp;!=&nbsp;site.domain:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;full_uri&nbsp;=&nbsp;&#39;%s://%s%s&#39;&nbsp;%&nbsp;(request.is_secure()&nbsp;and&nbsp;&#39;https&#39;&nbsp;or&nbsp;&#39;http&#39;,&nbsp;site.domain,&nbsp;request.get_full_path())
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;host.endswith(&#39;.&#39;&nbsp;+&nbsp;site.domain):
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;subdomain&nbsp;=&nbsp;host[:host.index(&#39;.&#39;)].replace(&#39;-&#39;,&nbsp;&#39;_&#39;)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;subdomain&nbsp;not&nbsp;in&nbsp;settings.DENIED_SUBDOMAINS:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;try:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;callback,&nbsp;callback_args,&nbsp;callback_kwargs&nbsp;=&nbsp;resolve(request.path,&nbsp;settings.SUBDOMAINS_ROOT_URLCONF)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;except&nbsp;Resolver404,&nbsp;e:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;HttpResponseRedirect(full_uri)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;except&nbsp;Exception,&nbsp;e:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;settings.DEBUG:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;technical_500_response(request,&nbsp;*exc_info())
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;server_error(request)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;else:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;callback_kwargs.update({&#39;user&#39;:&nbsp;subdomain})
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;try:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;callback(request,&nbsp;*callback_args,&nbsp;**callback_kwargs)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;except&nbsp;Exception,&nbsp;e:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;settings.DEBUG:
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;technical_500_response(request,&nbsp;*exc_info())
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;server_error(request)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;HttpResponseRedirect(full_uri)
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