找不到与"id"= (ActiveRecord：：RecordNotFound) 的竞争

Question

我正在开发一个使用RubyonRails的web应用程序。我读过一些"找不到'id'=(ActiveRecord:：RecordNotFound)的***"帖子，但没有一个能解决我的问题。

我有一个HAML视图，它接受competitions_id参数并传递它。

= form_tag weigh_ins_path, :method => :post, :id => 'select_weigh_in_form' do
= label :weigh_in, :competition_id, 'Competition'
= select :weigh_in, :competition_id, options_from_collection_for_select(@competitions, 'id', 'name'), :include_blank => true
= submit_tag 'Select Competition & Week'

我有一个带有以下参数的请求，包括competitions_id，它不是nil或null或类似的东西：

{"utf8"=>"✓",
"authenticity_token"=>"***Some stuff***==",
"weigh_in"=>{"competition_id"=>"1"},
"commit"=>"Select Competition & Week"}

我有一个控制器，它需要competition_id参数：

def create
@competition = Competition.find params[:competition_id]
***some more stuff**

但是，当我用Cucumber测试时，我得到了这个错误：

And I press "Select Competition & Week"                                      
Couldn't find Competition with 'id'= (ActiveRecord::RecordNotFound)

当我尝试使用网络应用程序时，我会遇到这个错误：

ActiveRecord::RecordNotFound in WeighInsController#create
Couldn't find Competition with 'id'=

因此，即使来自视图的POST请求正在发送一个参数，控制器也没有得到它？如何修复或解决此问题？

Answer 1

看起来competition_id嵌套在您在问题中发布的请求中。尝试从如下参数中检索：

params[:weigh_in][:competition_id]