Rails：如何读取用户在text_field_tag 输入中输入的值？
我有一个带有 <%= text_field_tag "mykey" %> 的表单。用户输入myvalue并提交。当POST请求到达Rails服务器时如何获取这个值？
我可以看到 myvalue 传入 POST 请求：
Started POST "/assessments" for 127.0.0.1 at 2011-07-08 20:04:41 +0900
Processing by AssessmentsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"...", "mykey"=>"myvalue"}
但是如何在控制器中读取该值？
在AssessmentsController#create中，我做的第一件事是记录参数，不幸的是它是空的：
logger.debug session[:assessment_params].collect {|k,v| "#{k}: #{v}"}.join
注意：我不能使用text_field代替text_field_tag，因为另一个问题。
I have a form with <%= text_field_tag "mykey" %>. The user enters myvalue and submits. How to get this value when the POST request hits the Rails server?
I can see myvalue passing in the POST request:
Started POST "/assessments" for 127.0.0.1 at 2011-07-08 20:04:41 +0900
Processing by AssessmentsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"...", "mykey"=>"myvalue"}
But how can I read this value in my controller?
In AssessmentsController#create, first thing I do is log the params, and it is unfortunately empty:
logger.debug session[:assessment_params].collect {|k,v| "#{k}: #{v}"}.join
Note: I can not use text_field instead of text_field_tag, because of another issue.
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如果您的表单不是模型表单（看起来确实如此），则您只需要
params[:mykey]。If your form isn't a model form, which appears to be the case, you just want
params[:mykey].