Question

the model like this:

create_table "user_accounts", :force => true do |t|
  t.string   "code"
  t.string   "user_name"
  t.integer  "user_type",  :default => 1
end

the controller’s code like this:

def index
  @user_accounts = UserAccount.all

  respond_to do |format|
    format.html # index.html.erb
    format.json { render :json => @user_accounts }
    format.xml { render :xml => @user_accounts }
  end
end

The View’s code like this:

<table>
  <tr>
    <th><%= t :code %></th>
    <th><%= t :user_name %></th>
    <th><%= t :user_type %></th>
    <th></th>
    <th></th>
    <th></th>
  </tr>

<% @user_accounts.each do |user_account| %>
  <tr class="<%= cycle('list_line_odd', 'list_line_even') %>">
    <td><%= user_account.code %></td>
    <td><%= user_account.user_name %></td>
    <td><%= user_account.user_type %></td>
    <td><%= link_to 'Show', user_account %></td>
    <td><%= link_to 'Edit', edit_user_account_path(user_account) %></td>
    <td><%= link_to 'Destroy', user_account, :confirm => 'Are you sure?', :method => :delete %></td>
  </tr>
<% end %>
</table>

Everything works fine. but there is a flaw that the ‘user_type’ displayed as a number. but i hope it can display as string like ‘normal user’ or ‘system admin’.

The most important thing that I DON’T want to add any logic in the view(index.html.erb).

So what i need is to change the user_type’s value at the controller or wherever.

there must be some elegant ways to do it. But i don’t know.Hope you guys can give me some suggestion. Thanks!

Answer 1

You can add to you model UserAccount some function like this

def user_type_string
    case self.user_type
    when 1
       return "Super user"
    when 2
       return "Something else"
    else
    end
end

And this method you can use in the view

<td><%= user_account.user_type_string %></td>