Question

我想将参数recipient传递给控制器。我可以在我看来这样显示：

@recipient.username

如何将此值传递给params[:message][:recipient]？请注意，我没有名为“Message”的模型。

控制器/ messages_controller.rb

def deliver
  recipient = User.find_by_username(params[:recipient])
  subject = params[:subject]
  body = params[:body]

  current_user.send_message(recipient, body, subject)
  redirect_to :controller => 'messages', :action => 'received' 
  flash[:notice] = "message sent!"
end

视图/消息/ new.html.erb

<td><%= @recipient.username if @recipient %></td>

<%=form_for :messages, url: url_for( :controller => :messages, :action => :deliver ) do |f| %>
  <div class="field">
    <%= f.label :subject %><br />
    <%= f.text_field :subject %>
  </div> 

  <div class="field">
    <%= f.label :body %><br />
    <%= f.text_field :body %>
  </div>

  <div class="actions">
    <%= f.submit %>
<% end %>

Answer 1

您可以通过为收件人分配attr_accessible密钥并将其分配给表单来完成此操作。

form_for :message do |f|
  f.hidden_field :recipient_id, :value => @recipient.id.to_i
  f.text_field :message
  f.submit
end

将此传递给您的创建操作后，您可以检查参数[：message] [：recipient_id]

并将其传递给db。

玩得开心

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