Question

我对rails有一个小问题。我有一个搜索控制器，它搜索数据库中的名称，如果找到它显示有关它的详细信息，或者我重定向到新的名称页面。重定向后，搜索到的名称是否会自动显示在新表单页面中？

提前致谢。

Answer 1

您可以使用ActionController::Flash在操作之间传递数据。

def search(searchedName)
  # perform search on DB

  flash[:searchedName] = searchedName

  redirect_to new_name
end

def new_name
end

new_name.html.erb：

<% if flash[:searchedName] %>
  <%= text_field_tag flash[:searchedName] %>
<% end %>

Answer 2

好吧，假设您正在保存用户在名为@name的变量上输入的“名称” 因此，在执行搜索操作的控制器上，您执行了类似的操作：

if @name
  ...#action if the name was found
else
  session[:name] = @name
  ...#here is the action you did to redirect

关于所谓方法的声明（你说它是'新'）：

def new
  @name = session[:name] if session[:name]  #I don't know exactly if the condition is this one, 
                                             #but you have to confirm that the session was instatiated
  session.delete(:name) #to don't let garbage
  ...#continuous the action of show the new page
     #and on the page you have access to a variable @name, that have the name searched before.

在Rails中重定向

2 个答案: