Image links in embedded Ruby

I'm a little confused.

How would I go about producing this in embedded ruby?

< a id="example" href="image_tag thing.photo.url" >< img alt="example3" src="image_tag thing.photo.url(:small开发者_如何转开发)" />< /a >

When you need to link a set of objects, rather than calling link_to name, path, options you can use a block, so you're sending in the method(s) you want it to execute. Use the "do" syntax:

<%= link_to thing.photo.url, :id=>'example' do
      image_tag(thing.photo.url(:small), :alt=>"example3")
    end
%>