ruby on rails - Access attributes of another model in view -

i have controller (of model aa) , in

def view_name  end 

and model b with:

def attributes {    :a => 'xyz'; } end 

how access attribute :a inside view of controller a, can display value of attribute :a in view page?

more info: model b has attribute :a url image , have display image through view of controller a. i'm wondering how use in <img> tag. <img src="<%= b.a %>" />. wouldn't have define b.a instance variable in controller use first? or there way?

normally if access attribute through instance of model b.

something should work in view:

<% b.each |test| %> <p><%= test.a %></p><br/> <% end %> 

this show of each instance of b attribute a

but if nice if add context easier you.