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我正在使用 jQuery 自动完成插件http://www.devbridge.com/projects/autocomplete/jquery/在我想要以 json 格式发送响应的 Web 应用程序中提供搜索建议。

用于发送建议响应的Django views.py :

def keywords_suggestions(request):
        if request.is_ajax():
                suggestions = []
                q = request.POST.get('q')
                try:
                        g = KeywordsModel.objects.filter(keyword__startswith=q).order_by('count')
                except KeywordsModel.DoesNotExist:
                        return HttpResponse("")
                else:
                        for i in range(0,len(g)):
                                global suggestions
                                suggestions.append(g[i].keyword)
                                to_json = {
                                        "query": q,
                                        "suggestions": suggestions
                                }
                        return HttpResponse(simplejson.dumps(to_json), mimetype='application/json')

Django模型.py

class KeywordsModel(models.Model):
        keyword = models.CharField(max_length=40, blank=False)
        count = models.IntegerField(max_length=20)

        def __unicode__(self):
            return self.keyword

jQuery代码:

$("#add-keywords").keyup(function() {
    $('#add-keywords').autocomplete({ 
            serviceUrl:'/keywords_suggestions',
            minChars:3, 
            maxHeight:220,
            width:280,
            zIndex: 9999,
            params: { q: $('#add-keywords').val() },
            onSelect: function(value, data){ $('#add-keywords').val(value); },
    });
});

我在#add-keywords 文本框上键入时收到此错误。

Request URL:http://127.0.0.1:8000/keywords_suggestions/?q=web&query=web
Request Method:GET
Status Code:500 INTERNAL SERVER ERROR

更新

ValueError at /keywords_suggestions/
The view information.views.keywords_suggestions didn't return an HttpResponse object.

更新-2

我对建议变量有疑问,也许全局建议会有问题。我做对了吗?

谁能指导我让它工作?

更新-3

<input type="text" id="add-keywords" name="add-keywords" title="e.g. Web developer, Javascript, Musician, Jazz" />

如何在 Django views.py 中获取#add-keywords 文本框的值。这行得通q = request.POST.get('add-keywords')吗?

谢谢!

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2 回答 2

1

判决request.is_ajax()返回False

于 2012-06-08T07:19:59.160 回答
0

条件分支

try:
    g = KeywordsModel.objects.filter(keyword__startswith=q).order_by('count')
except KeywordsModel.DoesNotExist:
    return HttpResponse("")
else:
    ...

也可能失败ValueError,例如,request.POST.get('q')结果None

另外,请尝试'/keywords_suggestions/',注意后缀斜杠,而不是在行'/keywords_suggestions'serviceUrl:'/keywords_suggestions',

于 2012-06-08T08:09:48.437 回答