Question

我无法在Heroku上使用AJAX表单，即使它在本地工作。你可以在这里查看heroku应用程序 -

https://mysterious-wildwood-6447.herokuapp.com/

（表单是位于屏幕右侧的新的subreddit表单）

视图中的表单代码（部分） -

<form class="form-inline" action="/subreddits" accept-charset="UTF-8" data-remote="true" method="post">
<div class="form-group">
    <input class="input-small" name="utf8" type="hidden" value="✓">
</div>
<div class="form-group sr-title">
    <input class="form-control input-small subreddit_title_field" placeholder="Create new subreddit" type="text" name="subreddit[title]" id="subreddit_title">
</div> <button type="submit" name="commit" class="btn btn-default new-subreddit">Submit</button>

相应控制器中的代码 -

def create
    p params[:subreddit_title]
    @subreddit = Subreddit.new(title: params[:subreddit_title].downcase)
    respond_to do |format|
      if @subreddit.save
        format.js { render 'create.js.erb' }
      else
        @error = @subreddit.errors.full_messages.to_sentence
        format.js { render 'error.js.erb' }
      end
    end
  end

javascript应用程序代码段（在application.js中） -

$('.new-subreddit').on("click", function(e) {
            e.preventDefault();
            var form_data = $('.subreddit_title_field').val();
            var values = {
                subreddit_title: form_data,
            }
            var ajaxRequest = $.ajax({
                url: '/subreddits',
                type: 'POST', // GET, PUT, DELETE
                data: values,
            });
   });

本地输出＆＃34;桥接＆＃34;作为表单输入（有效） -

tarted POST＆＃34; / subreddits＆＃34; for :: 1 at 2015-05-09 11:55:52 +0530 ActiveRecord :: SchemaMigration Load（6.3ms）SELECT＆＃34; schema_migrations＆＃34;。* FROM＆＃34; schema_migrations＆＃34; 由SubredditsController处理#create as / 参数：{＆＃34; subreddit_title＆＃34; =＆gt;＆＃34;桥梁＆＃34;} ＆＃34;桥＆＃34; （0.1ms）BEGIN Subreddit存在（0.9ms）SELECT 1 AS as FROM＆＃34; subreddits＆＃34;在哪里＆＃34; subreddits＆＃34;。＆＃34; title＆＃34; =＆＃39;桥梁＆＃39;限制1 SQL（0.4ms）INSERT INTO＆＃34; subreddits＆＃34; （＆＃34; title＆＃34;，＆＃34; created_at＆＃34;，＆＃34; updated_at＆＃34;）VALUES（$ 1，$ 2，$ 3）RETURNING＆＃34; id＆＃34; [[＆＃34; title＆＃34;，＆＃34; bridge＆＃34;]，[＆＃34; created_at＆＃34;，＆＃34; 2015-05-09 06：25：53.054220＆＃34;] ，[＆＃34; updated_at＆＃34;，＆＃34; 2015-05-09 06：25：53.054220＆＃34;]] （12.3ms）COMMIT 渲染的subreddits / create.js.erb（2.4ms）在93ms完成200 OK（浏览次数：20.4ms | ActiveRecord：23.4ms）

heroku日志的输出 -

2015-05-09T06：02：56.196766 + 00:00 app [web.1]：已开始发布＆＃34; / subreddits＆＃34;适用于2015-05-09 06:02:56 +0000的180.151.86.227 2015-05-09T06：02：56.200751 + 00:00 app [web.1]：由SubredditsController处理#create as / 2015-05-09T06：02：56.203206 + 00:00 app [web.1]： 2015-05-09T06：02：56.203210 + 00:00 app [web.1]：NoMethodError（未定义方法downcase' for nil:NilClass): 2015-05-09T06:02:56.203212+00:00 app[web.1]: app/controllers/subreddits_controller.rb:8:in创建＆＃39;

Rails：AJAX表单不在heroku上传递参数但在本地工作

0 个答案: