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PODjango - language switching with query data
 

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  1. PODjango - language switching with query data
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    <p>Hi I have a search results page which returns queries form the database using this view:</p> <pre><code>def search(request): show_results = False # check if POST if 'q' in request.POST: query = request.POST['q'].strip() # check if GET (paginated) if 'q' in request.GET: query = request.GET['q'].strip() # check if query length is more than 2 characters and proceed if query and len(query) &gt; 2: # if there is a query string show results (as opposed to arriving without any POST/GET show_results = True keywords = query.split() q = Q() for keyword in keywords: q = q &amp; (Q(title__icontains=keyword) | (Q(keywords__icontains=keyword))) query_set = Article.objects.filter(q) # create a new paginator instance with items-per-page paginator = Paginator(query_set, 10) # get the page number from a get param if param is blank then set page to 1 page = int(request.GET.get('page', '1')) # grab the current page from the paginator... items = paginator.page(page) # update search counter with term try: term = Search.objects.get(term=query) except Search.DoesNotExist: # if not already in db, then add query term = Search(term=query) term.counter += 1 term.last_search = datetime.now() term.save() elif len(query) &lt;= 2: short_string = True else: pass #render the template and pass the contacts page into the template return render_to_response('search_results.html', locals(), context_instance=RequestContext(request)) </code></pre> <p>and the template:</p> <pre><code>{% load i18n %} &lt;form action="/i18n/setlang/" name=postlink method="post"&gt; &lt;ul class="lang"&gt; &lt;li class="lang" style="color:gray"&gt; {% for lang in LANGUAGES %} {% if lang.0 != LANGUAGE_CODE %} &lt;input type="hidden" name="language" value="{{ lang.0 }}"&gt; &lt;a href=# onclick="submitPostLink()"&gt;{{ lang.1 }}&lt;/a&gt; {% else %} {{ lang.1 }} {% endif %} {% endfor %} &lt;/li&gt;&lt;/ul&gt; &lt;/form&gt; </code></pre> <p></p> <p>The language switching works fine on all pages except one case. When I submit the language change data on the search results page where no results have been returned (i.e. empty queryset), I get the following error:</p> <pre><code>UnboundLocalError at /search/ local variable 'query' referenced before assignment </code></pre> <p>I think I need to tweak the view slightly, but I'm not sure where. Any suggestions much appreciated.</p> <p>Traceback:</p> <pre><code>traceback: `Environment: Request Method: GET Request URL: http://localhost:8000/search/ Django Version: 1.3 Python Version: 2.7.1 Installed Applications: ['django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.sites', 'django.contrib.messages', 'django.contrib.staticfiles', 'journal', 'django.contrib.admin'] Installed Middleware: ('django.middleware.common.CommonMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.locale.LocaleMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.csrf.CsrfResponseMiddleware') Traceback: File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 111. response = callback(request, *callback_args, **callback_kwargs) File "/home/sam/public_html/django- projects/galapagos_research/../galapagos_research/journal/views.py" in search 40. if query and len(query) &gt; 2: Exception Type: UnboundLocalError at /search/ Exception Value: local variable 'query' referenced before assignment </code></pre>
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