ruby-on-rails - Rails : Pass Params Through Ajax

Question

我需要通过javascript将参数传递回服务器。此刻，我将它们传递给javascript，如下所示:

sendParams("<%= params[:q].to_json %>");

然后像这样将它们发送回去:

function sendParams(q){
  $.ajax({
    url: '/mymodel/myaction',
    type: 'post',
    data: {'q':q},
    contentType: 'json'
  });
}

在我的 Controller 中，我尝试像使用其他任何参数一样使用它们:

MyModel.where(params[:q])

但是，即使Firebug在POST选项卡中显示了这些参数，参数也变空了:

q=%7B%26quot%3Bc%26quot%3B%3A%7B%26quot%3B0%26quot%3B%3A%7B%26quot%3Ba%26quot%3B%3A%7B%26quot%3B0%26quot%3B%3A%7B%26quot%3Bname%26quot%3B%3A%26quot%3Btitle%26quot%3B%7D%7D%2C%26quot%3Bp%26quot%3B%3A%26quot%3Bcont%26quot%3B%2C%26quot%3Bv%26quot%3B%3A%7B%26quot%3B0%26quot%3B%3A%7B%26quot%3Bvalue%26quot%3B%3A%26quot%3B2%26quot%3B%7D%7D%7D%7D%2C%26quot%3Bs%26quot%3B%3A%7B%26quot%3B0%26quot%3B%3A%7B%26quot%3Bname%26quot%3B%3A%26quot%3Bvotes_popularity%26quot%3B%2C%26quot%3Bdir%26quot%3B%3A%26quot%3Bdesc%26quot%3B%7D%7D%7D

知道为什么where子句不处理此信息吗？我该怎么做才能使参数Rails再次可读？

更新:

Started POST "/publications/search?scroll=active&page=6" for 127.0.0.1 at 2013-0
2-12 22:55:24 -0600
Processing by PublicationsController#index as */*
Parameters: {"scroll"=>"active", "page"=>"6"}

更新2:

这个问题显然源于contentType。当我删除它时，q作为Rails参数发送。不幸的是，q仍然是JSON，导致错误:

undefined method `with_indifferent_access' for #<String:0x686d0a8>

如何将JSON转换为参数哈希？

Answer 1

您的数据参数错误。

你有

data: {'q':q},

它应该是

data: {q: 'q'},