Add a new colum with a button to field collection I'm trying to add a button or a link (&lt; a href=''>&lt; /a> or a &lt; button>&lt; /button>) in a new column in my field collection. For the moment i have 3 fields added by the administration of my field collection. I searched for add a button by the administration but we can't. what the best tips to add a button in a new column of my field collection ?

Do i need to "foreach" all element of my field collection and add a new element with the HOOK_form_alter ?

Here an example with the actual view (i cut the "delete line button" here so there aren't on the picture):



And now what i wanna create :



The "button" can be a link and after with css i style him.

PS : the button appear on edit content form

Thanks !
Use the Link Module to add a link field to your field collection


  With this module links can be added easily to any content types and profiles and include advanced validating and different ways of storing internal or external links and URLs. It also supports additional link text title, site wide tokens for titles and title attributes, target attributes, css class attribution, static repeating values, input conversion, and many more.


And add the relevant bootstrap class to the output through the manage display UI.