RJS - 红宝石环路内page.alert

Question

我在RJS下面的代码：

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 

我如何遍历@books_by_author并显示page.alert内他们的名字？

感谢您的宝贵帮助

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：如果数组包含模型，而不是字符串，你需要将它们映射到标题：

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