《Web Development with Go》中的html.template
模板应用,深入其它
main.go
package main
import (
//"encoding/json"
"fmt"
"log"
"net/http"
"strconv"
"time"
"html/template"
"github.com/gorilla/mux"
)
var templates map[string]*template.Template
func init() {
if templates == nil {
templates = make(map[string]*template.Template)
}
templates["index"] = template.Must(template.ParseFiles("templates/index.html", "templates/base.html"))
templates["add"] = template.Must(template.ParseFiles("templates/add.html", "templates/base.html"))
templates["edit"] = template.Must(template.ParseFiles("templates/edit.html", "templates/base.html"))
}
func renderTemplate(w http.ResponseWriter, name string, template string, viewModel interface{}) {
tmpl, ok := templates[name]
if !ok {
http.Error(w, "The template does not exist.", http.StatusInternalServerError)
}
err := tmpl.ExecuteTemplate(w, template, viewModel)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
type Note struct {
Title string `josn:"title"`
Description string `json: "description"`
CreatedOn time.Time `json:"createdon"`
}
type EditNote struct {
Note
Id string
}
var noteStore = make(map[string]Note)
var id int = 0
func getNotes(w http.ResponseWriter, r *http.Request) {
fmt.Println(noteStore)
renderTemplate(w, "index", "base", noteStore)
}
func addNote(w http.ResponseWriter, r *http.Request) {
renderTemplate(w, "add", "base", nil)
}
func saveNote(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
title := r.PostFormValue("title")
description := r.PostFormValue("description")
note := Note{title, description, time.Now()}
id++
k := strconv.Itoa(id)
noteStore[k] = note
http.Redirect(w, r, "/", 302)
}
func editNote(w http.ResponseWriter, r *http.Request) {
var viewModel EditNote
vars := mux.Vars(r)
k := vars["id"]
if note, ok := noteStore[k]; ok {
viewModel = EditNote{note, k}
} else {
http.Error(w, "Could not find the resource to edit.", http.StatusBadRequest)
}
renderTemplate(w, "edit", "base", viewModel)
}
func updateNote(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
k := vars["id"]
var noteToUpd Note
if note, ok := noteStore[k]; ok {
r.ParseForm()
noteToUpd.Title = r.PostFormValue("title")
noteToUpd.Description = r.PostFormValue("description")
noteToUpd.CreatedOn = note.CreatedOn
delete(noteStore, k)
noteStore[k] = noteToUpd
} else {
http.Error(w, "Could not find the resource to update.", http.StatusBadRequest)
}
http.Redirect(w, r, "/", 302)
}
func deleteNote(w http.ResponseWriter, r *http.Request) {
//Read value from route variable
vars := mux.Vars(r)
k := vars["id"]
// Remove from Store
if _, ok := noteStore[k]; ok {
//delete existing item
delete(noteStore, k)
} else {
http.Error(w, "Could not find the resource to delete.", http.StatusBadRequest)
}
http.Redirect(w, r, "/", 302)
}
func main() {
r := mux.NewRouter().StrictSlash(false)
fs := http.FileServer(http.Dir("public"))
r.Handle("/public/", fs)
r.HandleFunc("/", getNotes)
r.HandleFunc("/notes/add", addNote)
r.HandleFunc("/notes/save", saveNote)
r.HandleFunc("/notes/edit/{id}", editNote)
r.HandleFunc("/notes/update/{id}", updateNote)
r.HandleFunc("/notes/delete/{id}", deleteNote)
server := &http.Server{
Addr: ":8080",
Handler: r,
}
log.Println("Listening...")
server.ListenAndServe()
}
base.html
{{define "base"}}
<html>
<head>{{template "head" .}}</head>
<body>{{template "body" .}}</body>
</html>
{{end}}
add.html
{{define "head"}}<title>Add Note</title>{{end}}
{{define "body"}}
<h1>Add Note</h1>
<form action="/notes/save" method="post">
<p>Title:<br> <input type="text" name="title"></p>
<p>Description:<br>
<textarea rows="4" cols="50" name="description"></textarea> </p>
<p><input type="submit" value="submit"/> </p>
</form>
{{end}}
index.html
{{define "head"}}<title>Index</title>{{end}}
{{define "body"}}
<h1>Notes List</h1>
<p>
<a href="/notes/add">Add Note</a>
</p>
<div>
<table border="1">
<tr>
<th>Title</th>
<th>Description</th>
<th>Created On</th>
<th>Action</th>
</tr>
{{range $key,$value := .}}
<tr>
<td>{{$value.Title}}</td>
<td>{{$value.Description}}</td>
<td>{{$value.CreatedOn}}</td>
<td>
<a href="/notes/edit/{{$key}}">Edit</a>|
<a href="/notes/delete/{{$key}}">Delete</a>
</td>
</tr>
{{end}}
</table>
</div>
{{end}}
edit.html
{{define "head"}}<title>Edit Note</title>{{end}}
{{define "body"}}
<h1>Edit Note</h1>
<form action="/notes/update/{{.Id}}" method="post">
<p>Title:<br> <input type="text" value="{{.Note.Title}}" name="title"></p>
<p> Description:<br> <textarea rows="4" cols="50" name="description">
{{.Note.Description}}</textarea> </p>
<p><input type="submit" value="submit"/></p>
</form>
{{end}}



《Web Development with Go》中的html.template的更多相关文章
- Web Development Terms
I've come across lots of terms while learning web development. I'm feeling myself overwhelmed. Here ...
- Web 建站技术中,HTML、HTML5、XHTML、CSS、SQL、JavaScript、PHP、ASP.NET、Web Services 是什么(转)
Web 建站技术中,HTML.HTML5.XHTML.CSS.SQL.JavaScript.PHP.ASP.NET.Web Services 是什么?修改 建站有很多技术,如 HTML.HTML5.X ...
- Reloading Java Classes 301: Classloaders in Web Development — Tomcat, GlassFish, OSGi, Tapestry 5 and so on Translation
The Original link : http://zeroturnaround.com/rebellabs/rjc301/ Copyright reserved by Rebel Inc In t ...
- 《Agile Web Development With Rails》读后感--rails基于web设计的best Practices
最近看完<Agile Web Development with Rails>一书,受益匪浅.书中先是用一个简单的web应用带你进入Rails的世界,然后在你大致熟悉之后,再带你了解Rail ...
- 【外文阅读】Web Development in 2020: What Coding Tools You Should Learn---Quincy Larson
原文链接:https://mail.qq.com/cgi-bin/readtemplate?t=safety&check=false&gourl=https%3A%2F%2Fwww.f ...
- Learning web development with MDN
Learning web development with MDN Server-side website programming Dynamic Websites – Server-side pro ...
- Beginners Guide To Web Development
Web Development Front End Development Back End Development
- (转) Web 建站技术中,HTML、HTML5、XHTML、CSS、SQL、JavaScript、PHP、ASP.NET、Web Services 是什么?
Web 建站技术中,HTML.HTML5.XHTML.CSS.SQL.JavaScript.PHP.ASP.NET.Web Services 是什么? 建站有很多技术,如 HTML.HTML5.XHT ...
- Asp.net mvc web api 在项目中的实际应用
Asp.net mvc web api 在项目中的实际应用 前言:以下只是记录本人在项目中的应用,而web api在数据传输方面有多种实现方式,具体可根据实际情况而定! 1:数据传输前的加密,以下用到 ...
- C# asp.net IIS 在web.config和IIS中设置Session过期时间
有时候在web.config设置sessionState 或者类文件里设置Session.Timeout,在IIS里访问时每次都是达不到时间就超时,原因是因为在IIS中设置了Session的超时时间, ...
随机推荐
- Spring Boot2.2.X中Tomcat配置 错误定制
1: Tomcat定制 EmbeddedServletContainerCustomizer 已久废弃 按照下面的方式来处理 通过的类的配置 @Component public class Tomca ...
- Kubernetes行业调研报告:多集群、多云部署成企业首选策略
新兴的多集群.多云部署成为首选的企业策略,而边缘部署则呈上升趋势 2019年11月5日,业界采用最广泛的Kubernetes管理平台创造者Rancher Labs(以下简称Rancher)发布了首份调 ...
- 简单的权限管理php
转发自https://www.cnblogs.com/shenzikun1314/p/6604867.html#4262295 首先,要明白的基础理论是用户,角色,权限之间的关系是一对多,还是多对多. ...
- vue element之axios下载文件(后端Python)
axios 接受文件流,需要设置 {responseType:'arraybuffer'} axios.post( apiUrl, formdata, {responseType:'arraybuff ...
- Ligg.EasyWinApp-101-Ligg.EasyWinForm: Application--启动,传入参数、读取Application级别配置文件、验证密码、软件封面、启动登录、StartForm
首先请在VS里打开下面的文件,我们将对源码分段进行说明: 步骤1:读取debug.ini文件 首先读取当前文件夹(.\Clients\Form)的debug.ini文件,该文件的args用于调试时传参 ...
- 案例——UDP聊天
UDP聊天案例 做一个网络编程相关的案例,想着用利用UDP的快速且不用连接的优点做一个聊天室,我们一个聊天程序需要可以接收消息,也要可以发送消息,所以我们的DatagramSocket对象不但需要 ...
- ubuntu 安装在硬盘与配置
安装 下载Ubuntu ISO文件,使用rufus制作启动U盘,重启选择这个U盘启动. 用rufus做启动盘时,提示缺少文件,点下载,找到log,进入找到下载地址,手动下载,并放到软件所在路径下的文件 ...
- centos7 配置阿里镜像
1. 备份原来的yum源 cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak 2.设置aliyun的y ...
- Java学习笔记(9)--- 重写,重载,多态
1.重写: a.定义: 重写是子类对父类的允许访问的方法的实现过程进行重新编写, 返回值和形参都不能改变.即外壳不变,核心重写! 重写的好处在于子类可以根据需要,定义特定于自己的行为. 也就是说子类能 ...
- 华为hcnp r&s考试一共有三门,R&S-IERS,R&S-IENP,R&S-IEEP
大纲1.HCNP-R&S-IEEP V2.0考试大纲 考试内容:HCNP-R&S-IEEP考试覆盖对企业网络的规划.设计.实施.维护.排障.优化以及网络割接等. 知识点: 网络规划:1 ...