Rails-将html标签添加到image_tag

Question

I have an image_tag in rails. I have a jquery plugin that requires me to add a tag data-elem=pinchzoomer to enable touch zoom. How do I add this to the below?

image_tag(@listing.image.url, class: "rsTmb img-responsive")

Answer 1

Like so:

image_tag(@listing.image.url, class: "rsTmb img-responsive", data: {elem: 'pinchzoomer')

For data elements, just add the key 'data' to the hash you're passing to the helper method, and use the bit after "data-" to be the keys to the hash. So, if you wanted to have data-foo='fred' data-bar='barney', you'd add:

data: {foo: 'fred', bar: 'barney'}