Question

在我的交易控制器中，我有行动“topup”和“buy”。两者都在做与“新”行动类似的事情。

在我的“视图”控制器中，我有提交按钮，在这两个视图中，这些按钮都应该导致“创建”动作。

如何设置？

Answer 1

最简单的方法是在两个地方使用相同的表格。

在每个操作的控制器中，使用任何内容创建新事务它需要的属性是充值或购买。

def topup
  ...
  @transaction = Transaction.new
end

def purchase
  ...
  @transaction = Transaction.new
end

然后在视图中

<%= form_for @transaction do |form| %>
... needed fields
<% end %>

Answer 2

您可以自己设置form action url。只需为这两种表单提供:url参数。

示例：

<%= form_for :your_resource, url: create_path do |f| %>
    ...
<%= end %>

您必须在create_path中添加routes.rb。

post 'create', as: create  # <= This is just an example for your routes!

form helpers中详细介绍了package com.newgen.servlet.barcode; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.OutputStream; import java.io.PrintWriter; import javax.imageio.ImageIO; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class BarCodeGenerate extends HttpServlet { /** * */ private static final long serialVersionUID = 7027812863334578584L; public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //System.out.println("anand singh"); response.setContentType("image/jpeg"); OutputStream out1 = response.getOutputStream(); File file1; //PrintWriter out = response.getWriter(); try{ int width, height; //String FileName = pInvoiceNumber + "."+ pFileExtn; //saveFile=new File(FileName); String pFontFilePath="E:\\Code128.ttf"; String pBarcode=request.getParameter("barcodevalue"); System.out.println(pBarcode); String format=new String("bmp"); //BufferedImage bi,biFiltered; width=770; height=220; BufferedImage bufimg =new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics graphicsobj = bufimg.createGraphics(); file1=new File(pFontFilePath); System.out.println(file1.exists()); FileInputStream fin=new FileInputStream(file1); Font font = Font.createFont(Font.TRUETYPE_FONT,fin); Font font1 = font.deriveFont(46f); graphicsobj.setFont(font1); graphicsobj.setFont(Font.getFont("3 of 9 Barcode")); //3 of 9 Barcode graphicsobj.setColor(Color.WHITE); graphicsobj.fillRect(1,1,768,218); graphicsobj.setColor(Color.BLACK); ((Graphics2D)graphicsobj).drawString("*"+pBarcode+"*",25,170); ImageIO.write(bufimg,format,out1); }catch (Exception e){ //out.println(e.getMessage()); } } public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } }。

Ruby on Rails：两种不同的“新”行为

2 个答案: