How do I insert variable values into HTML tags in ERB templates?

I have a partial like:

<% office.map do |o| %>
   &l开发者_运维问答t;input id='city' name='company[company_office][0][city]' value=.... type='text' />
<% end %>

How can I insert a value like o.office into an attribute? value="#{o.office}" does not work.

<% office.map do |o| %>
   <input id='city' name='company[company_office][0][city]' value='<%= o.office %>' type='text' />
<% end %>

or you could use the form helpers for that

Use embedded ruby(erb) tags,

<%= o.office %>

The only time you'd use #{o.office} is when you're not using erb. In a helper method for example and you want to use your ruby in a string. But when you're in an html.erb file, you have to use the erb tags.