I was told about an issue today with the image_submit_tag not supporting the :confirm method on the element:

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<%= image_submit_tag('buttons/submit.gif', { :confirm => 'Are you sure?' }) %>

so I thought I’d share a quick fix which would be the actual javascript returned by the function:

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<%= image_submit_tag('buttons/submit.gif', { :onclick => 'return
confirm(\'Are you sure?\');' }) %>

Hope this can save some people time…