app/views/pieces/_piece_links.html.haml
= link_to "<button class=\"btn btn-success\"><i class=\"icon-edit\"></i> edit</button>".html_safe,
edit_piece_path(piece), class: "edit-piece-link"
= link_to "<button class=\"btn btn-small btn-danger\"><i class=\"icon-trash\"></i></button>".html_safe,
piece, method: :delete, class: "delete-piece-link"
= link_to "<button class=\"btn\">history</button>".html_safe,
history_piece_path(piece), class: "history-link"