Javascript 我想对[number set]使用image_标记，而不仅仅是一个数字。（红宝石）

这是一种彩票，当你按F5时，新的球就会出现在网站上。 我的目标是按升序显示有组织的数字球。 （我使用Cloud9） 当然，我已经对照片进行了编号，如1.jpg，2.jpg。。。 并将它们添加到C9（Cloud9）的文件夹中

我认为有两种解决办法

我想重新组织“抽样数”

图像标记到列出的数字集

这是对我的审判

    @todaynum= @allnum.sample
    @todaynum1= @allnum.sample
    @todaynum2= @allnum.sample
    @todaynum3= @allnum.sample
    @todaynum4= @allnum.sample
    @todaynum5= @allnum.sample 

    @numimg= @todaynum+".jpg"
    @numimg1= @todaynum1+".jpg"
    @numimg2= @todaynum2+".jpg"
    @numimg3= @todaynum3+".jpg"
    @numimg4= @todaynum4+".jpg"
    @numimg5= @todaynum5+".jpg"

    arr = (@todaynum,@todaynum1,@todaynum2,@todaynum3,@todaynum4,@todaynum5)
    arr.sort!

    puts arr $array = Array.new(45)
    $array = (1..45).to_a
    @lotto_list = $array.sample(6).sort
    @lotto_list_image = $array.sample(6).sort ".jpg"

html.erb文件

<%=@lotto_list%>
<%=image_tag lotto_list_image %>

<h1>lotto balls newbie.version</h1>

<p><%=image_tag @numimg%></p> 
<h2><%=image_tag @numimg1%></h2>
<h3><%=image_tag @numimg2%></h3>
<h4><%=image_tag @numimg3%></h4>
<h5><%=image_tag @numimg4%></h5>
<h6><%=image_tag @numimg5%></h6>

<%=@todaynum%>  
<%=@todaynum1%>
<%=@todaynum2%>
<%=@todaynum3%>
<%=@todaynum4%>
<%=@todaynum5%>

<h1> ruby random number (for test) </h1>
<%=@lotto_list%>

对我来说，复习这个问题太难了。。。 我该怎么办

这是我的密码

class numbersetController < ApplicationController
  def numbers
    @allnum=["1","2","3","4","5","6","7","8","9","10","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","35","36","37","38","39","40","41","42","43","44","45"]

    @todaynum= @allnum.sample
    @todaynum1= @allnum.sample
    @todaynum2= @allnum.sample
    @todaynum3= @allnum.sample
    @todaynum4= @allnum.sample
    @todaynum5= @allnum.sample 

    @numimg= @todaynum+".jpg"
    @numimg1= @todaynum1+".jpg"
    @numimg2= @todaynum2+".jpg"
    @numimg3= @todaynum3+".jpg"
    @numimg4= @todaynum4+".jpg"
    @numimg5= @todaynum5+".jpg"

    arr = (@todaynum,@todaynum1,@todaynum2,@todaynum3,@todaynum4,@todaynum5)
    arr.sort!
    puts arr

    $array = Array.new(45)
    $array = (1..45).to_a

    @lotto_list = $array.sample(6).sort

  end
end

classnumbersetcontroller

html.erb文件

<%=@lotto_list%>
<%=image_tag lotto_list_image %>

<h1>lotto balls newbie.version</h1>

<p><%=image_tag @numimg%></p> 
<h2><%=image_tag @numimg1%></h2>
<h3><%=image_tag @numimg2%></h3>
<h4><%=image_tag @numimg3%></h4>
<h5><%=image_tag @numimg4%></h5>
<h6><%=image_tag @numimg5%></h6>

<%=@todaynum%>  
<%=@todaynum1%>
<%=@todaynum2%>
<%=@todaynum3%>
<%=@todaynum4%>
<%=@todaynum5%>

<h1> ruby random number (for test) </h1>
<%=@lotto_list%>

lotto balls newbie.version

红宝石随机数（用于测试）

第二次尝试时，您的思路是正确的，只需再次调用

map

以您想要的方式格式化即可

# note: probably want to rename the controller like so
class NumbersetController < ApplicationController
  def numbers
    @lotto_ball_images = *(1..45).to_a.sample(6).sort.map(&:to_s).map{|n| "lotto-ball-image-number#{n}.jpg"}
  end
end

#注意：可能需要像这样重命名控制器
类编号控制器<应用程序控制器
def编号
@乐透球图像=*（1..45）.to_a.sample（6）.sort.map（&:to_s）.map{n}“乐透球图像编号{n}.jpg}”
结束
结束

然后在模板中添加类似的内容

<h1>lotto balls </h1>

<% @lotto_ball_images.each do |src| %>
   <%= image_tag(src) %>
<% end %>

乐透球

为什么不直接循环数组并使用一些元输入文件名：

numberset\u controller.rb

，

sampled.html.erb

。。。这将使帮助您变得更容易。（更改了地图的顺序，以确保它以数字格式而不是字母格式排序）令人惊讶。。我试试看。谢谢您好@JHK，如果这对您有效，如果您可以单击复选标记接受答案，我将不胜感激。实际上，现在我看到它，您可以完全跳过.map（&:to_）部分

@lotto_ball_images=*（1..45）.to_a.sample（6）.sort.map{n}“lotto ball images number{n}.jpg}