[Rails] How to create a "like" button

Ive got a like and video model.

On a Video page, Users can click a link ("like") button which will
allow them to like a particular video.

Since my like button/image comes in the form of a link and not an
actual html form. How should this be implemented? Do I need to specify
a ":method => puts" in my link_to tag helper?

What are your thoughts?

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