Linking an action to the button in the view
You can do this with the help of the Rules module. You'll probably want to create a Component (they don't have Events that trigger them, as opposed to full Rules) and connect them to your Views custom field. 

Views Bulk Operations (VBO) is a better option though. It's also well integrated with Rules so you can use that instead of a Custom text Field. With VBO you get checkboxes for each Views row and a button for each action you want to perform on a Views row, so you can select more than one row at the same time.