I have a problem with the jquery-autocomplete pluging and my django script. I want an easy to use autocomplete plugin. And for what I see this (http://code.google.com/p/jquery-autocomplete/) one seems very usefull and easy. For the django part I use this (http://code.google.com/p/django-ajax-selects/) I modified it a little, because the out put looked a little bit weired to me. It had 2 ‘\n’ for each new line, and there was no Content-Length Header in the response. First I thought this could be the problem, because all the online examples I found had them. But that was not the problem.
I have a very small test.html with the following body:
<body>
<form action="" method="post">
<p><label for="id_tag_list">Tag list:</label>
<input id="id_tag_list" name="tag_list" maxlength="200" type="text" /> </p>
<input type="submit" value="Submit" />
</form>
</body>
And this is the JQuery call to add autocomplete to the input.
function formatItem_tag_list(row) {
return row[2]
}
function formatResult_tag_list(row) {
return row[1]
}
$(document).ready(function(){
$("input[id='id_tag_list']").autocomplete({
url:'http://gladis.org/ajax/tag',
formatItem: formatItem_tag_list,
formatResult: formatResult_tag_list,
dataType:'text'
});
});
When I’m typing something inside the Textfield Firefox (firebug) and Chromium-browser indicates that ther is an ajax call but with no response. If I just copy the line into my browser, I can see the the response. (this issue is solved, it was a safety feature from ajax not to get data from another domain)
For example when I am typing Bi in the textfield, the url “http://gladis.org/ajax/tag?q=Bi&max… is generated. When you enter this in your browser you get this response:
4|Bier|Bier
43|Kolumbien|Kolumbien
33|Namibia|Namibia
Now my ajax call get the correct response, but there is still no list showing up with all the possible entries. I tried also to format the output, but this doesn’t work either. I set brakepoints to the function and realized that they won’t be called at all.
Here is a link to my minimum HTML file http://gladis.org/media/input.html
Has anybody an idea what i did wrong. I also uploaded all the files as a small zip at http://gladis.org/media/example.zip.
Thank you for your help!
[Edit]
here is the urls conf:
(r'^ajax/(?P<channel>[a-z]+)$', 'ajax_select.views.ajax_lookup'),
and the ajax lookup channel configuration
AJAX_LOOKUP_CHANNELS = {
# the simplest case, pass a DICT with the model and field to search against :
'tag' : dict(model='htags.Tag', search_field='text'),
}
and the view:
def ajax_lookup(request,channel):
""" this view supplies results for both foreign keys and many to many fields """
# it should come in as GET unless global $.ajaxSetup({type:"POST"}) has been set
# in which case we'll support POST
if request.method == "GET":
# we could also insist on an ajax request
if 'q' not in request.GET:
return HttpResponse('')
query = request.GET['q']
else:
if 'q' not in request.POST:
return HttpResponse('') # suspicious
query = request.POST['q']
lookup_channel = get_lookup(channel)
if query:
instances = lookup_channel.get_query(query,request)
else:
instances = []
results = []
for item in instances:
results.append(u"%s|%s|%s" % (item.pk,lookup_channel.format_item(item),lookup_channel.format_result(item)))
ret_string = "\n".join(results)
resp = HttpResponse(ret_string,mimetype="text/html")
resp['Content-Length'] = len(ret_string)
return resp
I found a solution, but well I still don’t know why the first approach didn’t worked out. I just switched to a different library. I choose http://bassistance.de/jquery-plugins/jquery-plugin-autocomplete/. This one is actually promoted by jQuery and it works 😉