RJS - 紅寶石環路內page.alert

Question

我在RJS下面的代碼：

if @books_by_author.count != 0 
page.alert("The following books reference the author you want to delete: \n 

    # here i want to list all the books referencing the author 
"); 

end 

我如何遍歷@books_by_author並顯示page.alert內他們的名字？

感謝您的寶貴幫助

Answer 1

使用Array.join：

page.alert("The following books reference the author you want to delete: \n 
      #{@books_by_author.join(', /n')} "); 

Ultimation的suggession：如果數組包含模型，而不是字符串，你需要將它們映射到標題：

page.alert("The following books reference the author you want to delete: \n 
      #{@books_by_author.map(&:title).join(', /n')} ");