返回值爲erb值

以下代碼旨在與sinatra一起使用，以從ERB生成的HTML頁面獲取值。它調用一個斐波那契序列生成器並將輸入值從HTML發送到生成器。然後該代碼返回一個句子，其中包含用戶輸入生成的斐波那契數列中的後10位數字。然後我希望它能夠將該返回值傳遞給HTML ERB頁面。我已經在這裏和其他網站上嘗試了許多解決方案，但還沒有找到解決我的問題的解決方案。返回值爲erb值

主代碼： 文件名：* /項目/ webhosted_custom_fibonacci_calculator.rb

require "rubygems" 
require "sinatra" 
require_relative 'fibonacci_calculator.rb' 
require "erb" 


include Calculator 


get '/' do 
    redirect ("/calculate") 
end 

get '/calculate' do 
    erb :calculator_form, :locals => {:calculator => session[:calculator]} 
end 

post '/calculate' do 
    num1 = params['firstnum'].to_i 
    num2 = params['secondnum'].to_i 
    output = Calculator.run(num1, num2) 
    redirect ("/results_form?results=#{output}") 
end 

get '/results_form' do 
    erb :results_form, :locals => {:results => params[:results]} 
end

計算器： 文件名：* /項目/ fibonacci_calculator.rb

module Calculator 
    def run(arg1, arg2) 
    number = [2] 
    number[0] = arg1 # Takes in passed values 
    number[1] = arg2 
    first_number = number[0].to_i # Makes sure inputs are integer values 
    second_number = number[1].to_i 
    storage = [] 
    calculate_next = 0 
    usage_number_1 = 0 
    usage_number_2 = 1 


     storage[0] = first_number 
     storage[1] = second_number 

     for i in (0..8) 
      usage_number_1 = storage[i].to_i 
      usage_number_2 = storage[i+1].to_i 
      calculate_next = usage_number_1 + usage_number_2 
      storage.push(calculate_next) 
     end 

     return "The values are: #{storage}" # Return value works fine 
    end 

end

輸入表格： 文件名稱：*/projects/views /calculator_form.erb

<html> 
    <head> 
     <title>Fibonacci Calculator</title> 
    </head> 
    <body> 
     <h1>Welcome to the Custom Fibonacci Sequence Calculator</h1> 

     <form action="/calculate" method="POST"> 
      First Number: <input type="number" name="firstnum" id = "1stnum" ><br> 
      Second Number: <input type="number" name="secondnum" id = "2ndnum"><br><br> 
      <input type="submit" value="Submit"><br> 
     </form> 

    </body> 
</html>

結果形式： 文件名：* /項目/視圖/ results_form.erb

<html> 
    <head> 
     <title>Fibonacci Calculator</title> 
    </head> 

    <body> 
     <h1>Results</h1> 

     <form action="/result" method="POST"> 
     <input type="text" name = "results" id = "out" size = "200" maxlength="600"> 
     </form> 
    </body> 
</html>

注：我得到的返回值，可以調出結果表單，但返回值不通過。

來源

2013-07-16 user2587507

你沒有你的輸出傳遞給/results_form實現這一

方式一：

post '/calculate' do 
    num1 = params['firstnum'].to_i 
    num2 = params['secondnum'].to_i 
    @@output = Calculator.run(num1, num2) 
    redirect "/results_form/" 
end 

get '/results_form/?' do 
    erb :results_form, :locals => {:results => @@output} 
end

而且在結果的看法：

<h1>Results</h1> 
<h3><%= results %></h3>

如果你感到驚訝，爲什麼你不」 t需要<html> & <Body>標籤這是因爲它們在layout.erb中，對於完整的源代碼你可能有一個lo OK在我的bitbucket： https://bitbucket.org/l33tname/fibonacci_calculator/src

來源

2013-07-16 14:06:32

返回值爲erb值

回答

相關問題