我想将image_tag用于[数字集]而不仅仅是一个数字。 （红宝石）

Question

这是一种乐透，当你按F5时，新的球出现在网站上。 我的目标是按升序显示有组织的数字球。 （我使用Cloud9） 当然，我有像 1.jpg ， 2.jpg 等照片...... 并将它们添加到C9（Cloud9）

的文件夹中

我认为有两种解决方案

1. 我想重新组织＆＃34;抽样编号＆＃34;

2. 图片代码到列出的数字集

这是我的试用

    @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 %>

但是，它根本不起作用..

或

lotto list image = ~~ something(I don't know..) ~~ ".jpg"I want to do like this.

我很难回答这个问题...... 我该怎么办？

这是我的代码

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

html.erb文件

<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%>

Answer 1

您在第二次尝试时走在正确的轨道上，只需要再次拨打map来按照您希望的方式对其进行格式化。

# 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

然后在模板中出现类似的东西。

<h1>lotto balls </h1>

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