如何删除collection_select
中显示的HTML,例如<\/option>\n
,<\/select>
,<\/div>');
在javascript启动之前,这是 HTML输出:
<select name="duel[duelers_attributes][1][challenge_id]" id="duel_duelers_attributes_1_challenge_id"><option value="29">Climb Mount Everst by May 20, 2017</option>
<option value="24">Run by Feb 20, 2017</option>
<option value="26">See Drive-thru Movie by Feb 20, 2017</option>
<option value="28">Run 5 Miles on Weekdays for 10 Days Starting Jan 20, 17</option>
<option value="25">Bungee Jump by Feb 20, 2017</option>
<option value="27">Journal on Weekdays for 10 Days Starting Jan 20, 17</option></select>
这是javascript启动后的 HTML输出:
<select name="duel[duelers_attributes][1][challenge_id]"
id="duel_duelers_attributes_1_challenge_id">
$("#dropdown-no-2").html(
"\n <option value="\"\""><\/option>\n</option>
<option value="\"24\"">Run by Feb 20, 2017<\/option>\n</option>
<option value="\"25\"">Bungee Jump by Feb 20, 2017<\/option>\n</option>
<option value="\"26\"">See Drive-thru Movie by Feb 20, 2017<\/option>\n</option>
<option value="\"27\"">Journal on Weekdays for 10 Days Starting Jan 20, 17<\/option>\n</option>
<option value="\"28\"">Run 5 Miles on Weekdays for 10 Days Starting Jan 20, 17<\/option>\n</option>
<option value="\"29\"">Climb Mount Everst by May 20, 2017<\/option><\/select>\n<\/div>"
)</option></select>
不知何故,随着更多选择,事情似乎越来越糟糕了?
_dueler_fields.html.erb
<%= f.select :user_id, options_for_select(@challengers.collect { |challenger| [challenger.id] }) %>
<%= f.select :challenge_id, options_for_select(@challenger_challenges.collect { |challenged| [challenged.full_challenge, challenged.id] }) %> ,
# The problem occurs only AFTER the javascript kicks in and replaces the above line with collection_select(:dueler...
<script>
$('#duel_duelers_attributes_1_user_id').change(function () {
var user_id = $(this).find(":selected").val();
var address = "<%= user_challenges_path %>/".concat(user_id);
$.get(address, function(data) {
$("#duel_duelers_attributes_1_challenge_id").html(data);
});
});
</script>
路由
get 'duels/user_challenges/:id', :to => 'duels#user_challenges', as: 'user_challenges'
get 'duels/user_challenges/:id/:user_id', :to => 'duels#user_challenges', as: 'select'
user_challenges.js.erb
$('#dropdown-no-2').html('<%= j render partial: "user_challenges" %>')
_user_challenges.html.erb
<%= collection_select(:dueler, :challenge_id, @challenges, :id, :full_challenge, include_blank: true, id: 'dropdown-no-2') %>
AJAX控制台输出
$('#dropdown-no-2').html('<select name=\"dueler[challenge_id]\" id=\"dueler_challenge_id\"><option value=\"\"><\/option>\n<option value=\"24\">Run by Feb 20, 2017<\/option>\n<option value=\"25\">Bungee Jump by Feb 20, 2017<\/option>\n<option value=\"26\">See Drive-thru Movie by Feb 20, 2017<\/option>\n<option value=\"27\">Journal on Weekdays for 10 Days Starting Jan 20, 17<\/option>\n<option value=\"28\">Run 5 Miles on Weekdays for 10 Days Starting Jan 20, 17<\/option>\n<option value=\"29\">Climb Mount Everst by May 20, 2017<\/option><\/select>')
更大的目标是在current_user
选择:user_id
时,所选用户的挑战应出现在collection_select
。
challenges_controller
def show
@challengers = User.where(id: current_user.following_ids)
if (params[:challenger_id]).present?
@challenger = User.find(params[:challenger_id])
else
@challenger = User.find(10)
end
@challenger_challenges = @challenger.challenges
@duel = Duel.new
@duel.duelers << Dueler.new
end
duels_controller
def user_challenges
@user = User.find(params[:user_id])
@challenges = @user.challenges.order(:created_at)
end
def new
@duel = Duel.new
end
duelers_controller
def new
@dueler = dueler.new
end
duel.rb
class Duel < ActiveRecord::Base
belongs_to :user
belongs_to :challenge
has_many :duelers
accepts_nested_attributes_for :duelers, :reject_if => :all_blank, :allow_destroy => true #correct
end
答案 0 :(得分:3)
好吧,看起来你的html没有被正确解析。尝试使用jQuery.parseHTML,然后将其附加到选择输入。
$.get(address, function(data) {
var html = $.parseHTML( data );
$("#duel_duelers_attributes_1_challenge_id").append(html);
});
未经测试,但请给它打击!!
答案 1 :(得分:3)
是否可以尝试删除名称属性&amp;测试一次。可能[](Square Brackets)正在制造一些问题。
试试这个
<select id="duel_duelers_attributes_1_challenge_id"><option value="29">Climb Mount Everst by May 20, 2017</option>
<option value="24">Run by Feb 20, 2017</option>
<option value="26">See Drive-thru Movie by Feb 20, 2017</option>
<option value="28">Run 5 Miles on Weekdays for 10 Days Starting Jan 20, 17</option>
<option value="25">Bungee Jump by Feb 20, 2017</option>
<option value="27">Journal on Weekdays for 10 Days Starting Jan 20, 17</option></select>
或者
<select name="duel" id="duel_duelers_attributes_1_challenge_id"><option value="29">Climb Mount Everst by May 20, 2017</option>
<option value="24">Run by Feb 20, 2017</option>
<option value="26">See Drive-thru Movie by Feb 20, 2017</option>
<option value="28">Run 5 Miles on Weekdays for 10 Days Starting Jan 20, 17</option>
<option value="25">Bungee Jump by Feb 20, 2017</option>
<option value="27">Journal on Weekdays for 10 Days Starting Jan 20, 17</option></select>
答案 2 :(得分:2)
确定。根据API,我认为你的collection_select不完全正确: http://apidock.com/rails/ActionView/Helpers/FormOptionsHelper/collection_select
尝试:
<%= collection_select(:dueler, :challenge_id, Challenge.all, :id, :full_challenge %>
第一个&#39; dueler&#39;意味着它是针对object / model dueler而不是方法或属性(challenge_id),而不是 Challenge.all 用于收集OR @challenges(如果你在控制器操作中有那个)。 :id是value,:full_challenge是label。如果您的full_challenge不包含此HTML作为字符串,那么它也不应该显示。
我希望这有帮助,可能不是正确答案,但我试图帮助你。让我知道,..
答案 3 :(得分:2)
好的,所以我试图绕过这个,即使这样做已经太晚了。我猜测你正在尝试从另一个的更改侦听器交换select
的选项。这是一个相当常见的任务,所以也许你应该寻找一个如何实现它的指南。
但是,检查jQuery
文档会告诉您.html(...)
函数将替换选择器标识的某些元素的内部 HTML。您可以查看this JSFiddle并验证您的JavaScript控制台,以确定这些仅您的选项,而不是select
本身。
对我而言,您似乎试图通过误导的JavaScript请求替换challenge
select
的选项,这将返回一些JavaScript转义html
!我们仍然缺少很多实际判断它所需的代码(即你的控制器动作)。如果可能是这种情况,那么当您尝试使用一段JavaScript转义select
替换html
中的 时,您的糟糕浏览器很可能会感到困惑。 再次定义select
(或至少尝试这样做)。
如果不进一步检查任何指南并保留最大的灵活性,我建议您提出 请求返回您希望以某种JSON
格式呈现挑战者的选项。这将允许您通过change
侦听器中的请求替换选项。如果您坚持提供html
,则应确保仅提供 options
,并确保在将其传递给.html(...)
之前撤消所有必要的转义。
答案 4 :(得分:2)
user_challenges.js.erb:
$('#dropdown-no-2').html('<%= render partial: "user_challenges" %>')
或者换句话说,删除转义html标签的'j'函数。
答案 5 :(得分:2)
我建议你在html元素上使用这样的正则表达式替换。
var text=$('#duel_duelers_attributes_1_challenge_id').html();
text=text.replace(/(\\n|<(.)*>|\\"|\"\n.*\))/g,'');
text=text.replace(/\$[^<]*/,'');
text=text.replace(/(\n)/g,'').replace(/\\\"/g,'"').replace(/\"\)/,'').replace(/\\\//g,'/');
$('#duel_duelers_attributes_1_challenge_id').html(text);
console.log(text);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select name="duel[duelers_attributes][1][challenge_id]"
id="duel_duelers_attributes_1_challenge_id">
$("#dropdown-no-2").html(
"\n <option value="\"\""><\/option>\n</option>
<option value="\"24\"">Run by Feb 20, 2017<\/option>\n</option>
<option value="\"25\"">Bungee Jump by Feb 20, 2017<\/option>\n</option>
<option value="\"26\"">See Drive-thru Movie by Feb 20, 2017<\/option>\n</option>
<option value="\"27\"">Journal on Weekdays for 10 Days Starting Jan 20, 17<\/option>\n</option>
<option value="\"28\"">Run 5 Miles on Weekdays for 10 Days Starting Jan 20, 17<\/option>\n</option>
<option value="\"29\"">Climb Mount Everst by May 20, 2017<\/option><\/select>\n<\/div>"
)</option></select>