Using a hash in view in rails

HI ,

i am using a COnstant hash in my model User as

MYUSER = { :firstname => "First Name", :开发者_运维百科lastname => "LAst Name", :designation => "My Designation" }

Now in my views , i have a loop where i have all those field names (firstname,lastname,designation)

So i try to send this field name as a key in

    <% @userfields.sort.each do |userfield| %>
        <tr>
          <td>

         <% @userkey=userfield%>
         <%= @userkey%> # gives the exact field names
          <%= User::MYUSER[:@userkey]%> # this doesnt gives anything
           <td></tr>
     <%end%>

How to rectify this ?? give some suggestions

When you use a variable as index to a hash, you should not specify the colon, the correct syntax would be:

User::MYUSER[@userkey]

or

User::MYUSER[@userkey.to_sym]

depending on the value in @userkey.

However, you could also loop the MYUSER constant directly like this:

<% User::MYUSER.keys.each do |key| %>
  <tr>
    <td>Key: <%= key %></td>
    <td>Value: <%=  User::MYUSER[key] %></td>
  </tr>
<% end %>

I agree with @DanneManne's answer. But more specifically, you can iterate through records using each_pair:

<% User::MYUSER.each_pair do |key, value| %> <tr> <td>Key: <%= key %></td> <td>Value: <%= value %></td> </tr> <% end %>