Question

如何从控制器中的f.select标签获取值。这是我的erb代码

<td>
  <%= f.text_field :startdate , :id => "from", :placeholder => "Start Date"%>   
</td>    
<td>           
<%= f.select :repetitive_task, options_for_select(["Every Day","Every Week", "Every Month"]), {:prompt => 'None'}, {:id => "select1"} %>
</td>

这是我的控制器 -

def create
  @micropost = current_user.microposts.build(params[:micropost])
  if params[:repetitive_task] == "Every Day" 
     @micropost.targetdate = params[:startdate]
  elsif params[:repetitive_task] == "Every Week" 
     @micropost.targetdate = params[:startdate] + 7
  elsif params[:repetitive_task] == "Every Month"
     @micropost.targetdate = params[:startdate] + 30 
  else
  end      
  if @micropost.save 
    flash[:success] = "Task created!"
    redirect_to root_url
  else             
   render 'static_pages/index'
end

单击“提交”按钮时，不会获取值。请帮忙

Answer 1

<%= f.select :repetitive_task,options_for_select(["Every Day","Every Week", "Every Month"], params[:micropost][:repetitive_task])
, {:prompt => 'None'}, {:id => "select1"} %>

在 options_for_select 中传递 second 参数以显示所选值。

也可以使用params [：micropost] [：repetitive_task]而不是在控制器中使用params [：repetitive_task]。

Answer 2

如果您使用的是form_for helper（例如form_for：micropost），则应该在params [：micropost]中包含所有值。在你的情况下你应该有：repetitive_task in

params[:micropost][:repetitive_task]

如何从rails中ruby中的控制器中的f.select标签中获取选定值

2 个答案: