所以我正在学习jquery和ajax的教程,到现在为止我有一个搜索表单用于搜索和返回搜索结果。它工作正常。但是当我从表单中删除单词或退格单词时,它会加载列表中的所有状态。如果表单中没有任何单词,我该怎么做才能返回,如果表单中没有单词则不返回任何内容。
status.html的摘录:
{% block add_account %}
<input type="text" id="search" name="search" />
<ul id="search-results">
</ul>
{% endblock %}
ajax.js:
$(function() {
$('#search').keyup(function() {
$.ajax({
type: "POST",
url: "/status/search_status/",
data: {
'search_text' : $('#search').val(),
'csrfmiddlewaretoken' : $("input[name=csrfmiddlewaretoken]").val()
},
success: searchSuccess,
dataType: 'html'
});
});
});
function searchSuccess(data, textStatus, jqXHR)
{
$('#search-results').html(data)
}
ajax.html:
{% if statuss.count > 0 %}
{% for status in statuss %}
<li><a href="/status/get/{{status.id}}/">{{status.status}}</a></li>
{% endfor %}
{% else %}
<p>None to show</p>
{% endif %}
views.py
def search_status(request):
if request.method == "POST":
search_text = request.POST['search_text']
else:
search_text=''
statuss = Status.objects.filter(status__icontains = search_text)
return render(request, 'ajax_search.html', {'statuss':statuss})
答案 0 :(得分:1)
$('#search').keyup(function () {
if (!$.trim(this.value).length) return; //<< returns from here if nothing to search
$.ajax({
type: "POST",
url: "/status/search_status/",
data: {
'search_text': $('#search').val(),
'csrfmiddlewaretoken': $("input[name=csrfmiddlewaretoken]").val()
},
success: searchSuccess,
dataType: 'html'
});
});
顺便说一下,如果用户键入太快,你应该在keyup上限制你的请求,以避免多次调用:
(function () {
var throttleTimer;
$('#search').keyup(function () {
clearTimeout(throttleTimer);
throttleTimer = setTimeout(function () {
if (!$.trim(this.value).length) return;
$.ajax({
type: "POST",
url: "/status/search_status/",
data: {
'search_text': $('#search').val(),
'csrfmiddlewaretoken': $("input[name=csrfmiddlewaretoken]").val()
},
success: searchSuccess,
dataType: 'html'
});
}, 100);
});
}());