这是后续我之前的问题（未解决） https://stackoverflow.com/questions/7696540/how-to-update-database-with-jquery-without-refreshing-the-page.
I fetch items从数据库中获取并在 for 循环中显示它们。我使用 jQuery 隐藏其中一行。现在我需要得到main_id该隐藏行的并将其传递给$.ajax。在最初的问题中，保罗建议使用alert(this.attr("title"));但这行停止了执行$.ajax调用并且该调用未执行。当我评论掉警报时alert(this.attr("title"));然后ajax调用就完成了。在这种情况下，我会收到错误，因为display_false()处理程序中的函数未获取值main_id.
这是“隐藏”链接的 htmltitle=%s.
<a class="false" title=%s href="/useradminpage?main_id=%s&display=false"><span class="small">(hide)</span></a>
所以我需要传递的值main_id存储在alert(this.attr("title"));到函数display_false()当ajax调用执行时。
我怎样才能做到这一点？
相关代码如下：
剧本
self.response.out.write("""
<html>
<head>
<link type="text/css" rel="stylesheet" href="/stylesheets/main.css" />
<title>User Admin Page</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js"></script>
<script>
$(document).ready(function() {
alert("1 - document ready is called")
$("a.false").click(function(e) {
$(this).closest("tr.hide").hide("slow");
e.preventDefault();
alert("2 - row is hidden")
});
$("a.false").click(function() {
alert("3 - ajax")
//the following alert stops the ajax call from executing
alert(this.attr("title"));
$.ajax({
url: "/useradminpage?main_id=%s&display=false",
data: {main_id: "title"}
success: function(data) {
display_false()
alert(4 - "returned");
}
});
});
});
</script>
</head>
<body>
""")
HTML
#-----------main table------------#
main_id = self.request.get("main_id")
self.response.out.write("""<table class="mytable">
<tr class="head">
<th width="80%">links</th><th>edit tags</th>
</tr>
""")
query = Main.all()
query.filter("owner", user)
query.filter("display", True)
query.order("-date")
cursor = self.request.get("cursor")
if cursor: query.with_cursor(cursor)
e = query.fetch(100)
cursor = query.cursor()
for item in e:
main_id = item.key().id()
self.response.out.write("""
<tr class="hide">
<td><a href="%s" target="_blank">%s</a><span class=small> (%s) </span><br />
<span class=small>%s</span>
<a href="/edit?main_id=%s"><span class="small">(edit)</span></a>
<a class="false" title=%s href="/useradminpage?main_id=%s&display=false"><span class="small">(hide)</span></a>
<a href="/comment?main_id=%s"><span class="small">(comments)</span></a></td>
<td><a href="/tc?url=%s&main_id=%s&user_tag_list=%s" title="edit tags">%s</a>
</td>
</tr>
""" % tuple([item.url, item.title, urlparse(item.url).netloc,
f1.truncate_at_space(item.pitch), main_id,
main_id,
main_id, main_id,
item.url, main_id, (", ".join(item.tag_list)),
(", ".join(item.tag_list)),]))
self.response.out.write("""</tbody></table>""")
display = self.request.get("display")
def display_false():
if display == "false":
main_id = self.request.get("main_id")
#I tried to get the "title" but this does not work
#main_id = self.request.get("title")
k = Main.get_by_id(int(main_id))
k.display = False
k.put()
display_false()
...
Update
根据更新代码James Montagne 的回答（有一些改动） https://stackoverflow.com/questions/7698706/how-to-pass-a-query-string-to-ajax-call-with-jquery/7698722#7698722。现在，由于某种原因，文档就绪未加载，并且隐藏行的调用不起作用，但更新数据库的 ajax 调用正在起作用。我究竟做错了什么？
<script>
$(document).ready(function() {
alert("1 - document ready is called")
$("a.false").click(function(e) {
$(this).closest("tr.hide").hide("slow");
var main_id = this.attr("title");
var display = "false";
e.preventDefault();
alert("2 - row is hidden")
});
$("a.false").click(function() {
alert("3 - ajax");
$.ajax({
url: "/useradminpage?main_id=%s&display=false",
data: {main_id: "main_id", display: "display")},
success: function(data) {
display_false()
alert(4 - "returned");
}
});
});
});
</script>
