如何在Rails中获取URL参数? [英] How to get URL parameters in Rails?

问题描述

处理POST请求后，params [:id]返回存储在已发布表单中的"id"值.

When a POST request is processed, params[:id] returns the value of "id" stored in the form that was posted.

但是我想获取存储在url(查询字符串)中的值.

However I want to get the value stored in the url (query string).

def some_action
  id = params[:id] # Gets id from here: /some_action?id=[VALUE] only when request.post? is false
  if request.post?
  # Do some stuff, can't get the id value from the url
  ...
end

那么如何在POST请求中从URL获取值?

So how to get the value from the URL in a POST request?

推荐答案

它实际上与GET参数相同.为了证明这一点，我有一个搜索表单，该表单将一个参数发布到同一操作:

it's the same actually as GET parameters. To prove that, I have a search form that posts one parameter to the same action :

def invite

    if request.post? 

        search= [params[:search]]
        #...

    end
end

在视图中-也许您的问题来自此

<% form_tag do %>
        <%= text_field_tag :search, params[:search] %>
        <%= submit_tag "Rechercher" %>
<% end %>

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