zoukankan html css js c++ java

【8】添加新建/编辑博客逻辑

url.py添加对应新增的功能：

 1 #!/usr/bin/env python
 2 # coding:utf-8
 3 
 4 import tornado.web
 5 import application
 6 
 7 url = [(r"^/(favicon.ico)", tornado.web.StaticFileHandler,
 8         dict(path=application.settings['static_path']))]
 9 
10 url += [(r"^/", "handlers.index.IndexHandler")]
11 
12 url += [(r'^/help', "handlers.help.HelpHandler")]
13 
14 url += [(r'^/register', "handlers.auth.RegisterHandler")]
15 url += [(r'^/login', "handlers.auth.LoginHandler")]
16 url += [(r'^/logout', "handlers.auth.LogoutHandler")]
17 url += [(r'^/changepasswd', "handlers.auth.ChangePasswdHandler")]
18 url += [(r'^/account/(w+)', "handlers.auth.AccountHandler")]
19 
20 url += [(r'^/manage/blogs/(w+)', "handlers.manage.BlogsHandler")]
21 url += [(r'^/manage/comments/(w+)', "handlers.manage.CommentsHandler")]
22 
23 url += [(r'^/blog/new/(w+)', "handlers.blog.NewBlogHandler")]
24 url += [(r'^/blog/edit/(w+)', "handlers.blog.EditBlogHandler")]

View Code

handles文件夹添加2个对应的处理

1、blog.py（处理文件的新增和编辑）

2、manage.py (处理日志列表的查看)

blog.py

  1 #!/usr/bin/env python
  2 #-*- coding:utf-8 -*-
  3 
  4 import tornado.web
  5 import logging
  6 import datetime
  7 import base64
  8 
  9 from base import BaseHandler
 10 
 11 
 12 class NewBlogHandler(BaseHandler):
 13 
 14     '''
 15     后台管理（新建博客）
 16     '''
 17 
 18     @tornado.web.authenticated
 19     def get(self, *args, **kwargs):
 20         action = "_%s_action" % args[0]
 21         if hasattr(self, action):
 22             getattr(self, action)()
 23         else:
 24             self.render("index.htm",
 25                         user=self.current_user,
 26                         admin=self.get_current_permission())
 27     
 28     def _info_action(self):
 29         self.render("blog/newblog.htm",
 30                     user=self.current_user,
 31                     admin=self.get_current_permission())
 32 
 33     @tornado.web.authenticated
 34     def post(self, *args, **kwargs):
 35         action = "_%s_action" % args[0]
 36         if hasattr(self, action):
 37             getattr(self, action)()
 38         else:
 39             self.json("fail", "no action!")
 40 
 41     def _add_blog_action(self):
 42         '''
 43         添加新博客
 44         '''
 45         blog_title = self.get_body_argument("blog_title", default="")
 46         blog_summary = self.get_body_argument("blog_summary", default="")
 47         blog_content = self.get_body_argument("blog_content", default="")
 48 
 49         try:
 50             self.db.execute('''insert into blogs 
 51                                 (
 52                                     user_id,
 53                                     user_name,
 54                                     user_image,
 55                                     name,
 56                                     summary,
 57                                     content,
 58                                     created_at
 59                                 ) 
 60                                 values 
 61                                 (
 62                                     (select id from users where name = %s), 
 63                                     %s, 'none', %s, %s, %s, %s
 64                                 )''',
 65                                 self.current_user,
 66                                 self.current_user,
 67                                 blog_title,
 68                                 blog_summary,
 69                                 blog_content,
 70                                 datetime.datetime.now())
 71             self.json("success", blog_title)
 72         except Exception as e:
 73             self.json("error", str(e))
 74 
 75 class EditBlogHandler(BaseHandler):
 76 
 77     '''
 78     后台管理（编辑博客）
 79     '''
 80 
 81     @tornado.web.authenticated
 82     def get(self, *args, **kwargs):
 83         action = "_%s_action" % args[0]
 84         if hasattr(self, action):
 85             getattr(self, action)(*args, **kwargs)
 86         else:
 87             self.render("index.htm",
 88                         user=self.current_user,
 89                         admin=self.get_current_permission())
 90     
 91     def _info_action(self, *args, **kwargs):
 92         blog_id = self.get_argument("id", default="")
 93         self.render("blog/editblog.htm",
 94                     user=self.current_user,
 95                     admin=self.get_current_permission(),
 96                     blog_id=blog_id)
 97 
 98     @tornado.web.authenticated
 99     def post(self, *args, **kwargs):
100         action = "_%s_action" % args[0]
101         if hasattr(self, action):
102             getattr(self, action)()
103         else:
104             self.json("fail", "no action!")
105 
106     def _edit_blog_info_action(self):
107         '''
108         查看编辑的博客的信息
109         '''
110         blog_id = self.get_body_argument("blog_id", default="")
111 
112         ret = self.db.query('''select
113                                     id,
114                                     name as blog_title,
115                                     summary as blog_summary,
116                                     content as blog_content
117                                 from 
118                                     blogs
119                                 where
120                                     id = %s''', blog_id)
121         self.json("success", ret)
122 
123     def _update_blog_action(self):
124         '''
125         更新博客
126         '''
127         blog_id = self.get_body_argument("blog_id", default="")
128         blog_title = self.get_body_argument("blog_title", default="")
129         blog_summary = self.get_body_argument("blog_summary", default="")
130         blog_content = self.get_body_argument("blog_content", default="")
131 
132         try:
133             self.db.execute('''update 
134                                     blogs
135                                 set  
136                                     name = %s,
137                                     summary = %s,
138                                     content = %s
139                                 where
140                                     id = %s''',
141                                 blog_title,
142                                 blog_summary,
143                                 blog_content,
144                                 blog_id)
145             self.json("success", blog_id)
146         except Exception as e:
147             self.json("error", str(e))
148

View Code

manage.py

  1 #!/usr/bin/env python
  2 #-*- coding:utf-8 -*-
  3 
  4 import tornado.web
  5 import logging
  6 import datetime
  7 import base64
  8 
  9 from base import BaseHandler
 10 
 11 
 12 class BlogsHandler(BaseHandler):
 13 
 14     '''
 15     后台管理（管理博客）
 16     '''
 17 
 18     @tornado.web.authenticated
 19     def get(self, *args, **kwargs):
 20         action = "_%s_action" % args[0]
 21         if hasattr(self, action):
 22             getattr(self, action)()
 23         else:
 24             self.render("index.htm",
 25                         user=self.current_user,
 26                         admin=self.get_current_permission())
 27     
 28     def _info_action(self):
 29         self.render("manage/blogs.htm",
 30                     user=self.current_user,
 31                     admin=self.get_current_permission())
 32 
 33     @tornado.web.authenticated
 34     def post(self, *args, **kwargs):
 35         action = "_%s_action" % args[0]
 36         if hasattr(self, action):
 37             getattr(self, action)()
 38         else:
 39             self.json("fail", "no action!")
 40 
 41     def _query_all_blogs_action(self):
 42         '''
 43         查询所有博客简略信息
 44         '''
 45         page_record = 10
 46         current_page = self.get_body_argument("current_page", default="1")
 47         page_dict = dict()
 48 
 49         try:
 50             ret = self.db.query('''select count(id) as count from blogs''')
 51             if ret[0].count%page_record == 0:
 52                 total_pages = ret[0].count//page_record
 53             else:
 54                 total_pages = ret[0].count//page_record + 1
 55             page_dict["total_pages"] = str(total_pages)
 56             page_dict["total_count"] = str(ret[0].count)
 57             ret = self.db.query('''select
 58                                         id,
 59                                         user_name,
 60                                         user_image,
 61                                         name as blog_title,
 62                                         summary as blog_summary,
 63                                         DATE_FORMAT(created_at, %s) as created_at
 64                                     from 
 65                                         blogs
 66                                     order by id desc limit %s, %s''',
 67                                     '%Y-%m-%d %H:%i:%s',
 68                                     (int(current_page)-1)*page_record, page_record)
 69             page_dict["current_page"] = current_page
 70             page_dict["current_data"] = ret
 71             self.json("success", page_dict)
 72         except Exception as e:
 73             self.json("error", str(e))
 74 
 75 
 76     def _delete_blog_action(self):
 77         '''
 78         删除博客
 79         '''
 80         blog_id = self.get_body_argument("blog_id", default="")
 81         try:
 82             self.db.execute('''delete from blogs where id = %s''', blog_id)
 83             self.json("success", blog_id)
 84         except Exception as e:
 85             self.json("error", str(e))
 86 
 87 class CommentsHandler(BaseHandler):
 88 
 89     '''
 90     后台管理（管理评论）
 91     '''
 92 
 93     @tornado.web.authenticated
 94     def get(self, *args, **kwargs):
 95         action = "_%s_action" % args[0]
 96         if hasattr(self, action):
 97             getattr(self, action)()
 98         else:
 99             self.render("index.htm",
100                         user=self.current_user,
101                         admin=self.get_current_permission())
102     
103     def _info_action(self):
104         self.render("manage/comments.htm",
105                     user=self.current_user,
106                     admin=self.get_current_permission())
107 
108     @tornado.web.authenticated
109     def post(self, *args, **kwargs):
110         action = "_%s_action" % args[0]
111         if hasattr(self, action):
112             getattr(self, action)()
113         else:
114             self.json("fail", "no action!")

View Code

templates文件夹，添加对应的html文件

1、blogs.htm 显示日志列表，用表格来展示

2、blog/newblog.htm 新建日志

3、blog/editblog.htm 编辑日志

blogs.htm

 1 {% extends "../base.htm" %}
 2 
 3 {%block header%}
 4     {%include '../header.htm'%}
 5 {%end%} 
 6 
 7 {%block content%}
 8 <script src="{{ static_url('js/knockout/knockout-2.1.0.js') }}"></script> 
 9 <script src="{{ static_url('js/knockout/knockout.mapping-2.4.1.js') }}"></script>
10 <script src="{{ static_url('js/components/jquery.twbsPagination.min.js') }}"></script>
11 <script src="{{ static_url('js/manage/blogs.js') }}"></script>
12 
13 <div class="bs-docs-container">
14     <div class="container">
15         <div class="row">
16             <div class="col-md-12">
17                 <div class="row" style="margin-top: 10px; margin-bottom: 10px">
18                     <div class="col-lg-6">
19                         <div class="input-group">
20                             <span class="input-group-btn">
21                                 <a href="/blog/new/info" role="button" class="btn btn-info" data-toggle="modal"><span class="glyphicon glyphicon-plus"> 新日志</span></a>
22                             </span>
23                         </div>
24                     </div>
25                 </div>
26 
27                 <div style="min-height: 550px">
28                     <table class="table table-hover table-bordered">
29                         <thead>
30                             <tr>
31                                 <th colspan="8">
32                                     <h3 class="table_title" id="table_title">日 志 列 表</h3>
33                                 </th>
34                             </tr>
35 
36                             <tr class="table_header">
37                                 <td>序号</td>
38                                 {% if admin is 1%}
39                                 <td>ID</td>
40                                 {% end %}
41                                 <td>标题</td>
42                                 <td>作者</td>
43                                 <td>简介</td>
44                                 <td>日期</td>
45                                 <td></td>
46                             </tr>
47                         </thead>
48                         <tbody>
49                             <!-- ko foreach: $data -->
50                             <tr>
51                                 <td  data-bind="text: $index() + 1"></td>
52                                 {% if admin is 1%}
53                                 <td >
54                                     <span id="blog_id" data-bind="text: id" />
55                                 </td>
56                                 {% end %}
57                                 <td >
58                                     <button class="btn btn-link" id="blogTitleBtn" data-bind="text: show_title(blog_title), click:function(name){show_blog(name)}"></span></button>
59                                 </td>
60                                 <td >
61                                     <button class="btn btn-link" id="blogAuthorBtn" data-bind="text: user_name, click:function(name){show_author(name)}"></span></button>
62                                 </td>
63                                 <td >
64                                     <span id="blog_summary" data-bind="text: show_summary(blog_summary)" />
65                                 </td>
66                                 <td >
67                                     <span id="created_at" data-bind="text: created_at" />
68                                 </td>
69                                 <td>
70                                     <button class="btn btn-link" id="deleteButton" data-bind="click:function(name){edit_blog(name)}"><span class="glyphicon glyphicon-edit">编辑</span></button>
71 
72                                     <button class="btn btn-link" id="deleteButton" data-bind="click:function(name){show_blog(name)}"><span class="glyphicon glyphicon-search">查看</span></button>
73 
74                                     <button class="btn btn-link" id="deleteButton" data-bind="click:function(name){delete_blog(name)}"><span class="glyphicon glyphicon-trash">删除</span></button>
75                                 </td>
76                             </tr>
77                             <!-- /ko -->
78                         </tbody>
79                     </table>
80                 </div> 
81                 <div id="pagination_box" class="pull-right">  
82                    <ul id="pagination_zc" class="pagination-sm"></ul>            
83                 </div>
84             </div>
85         </div>
86     </div>
87 </div>
88 {%end%}
89 
90 {%block footer%}
91     {%include '../footer.htm'%}
92 {%end%}

View Code

对应的js/manage/blogs.js

  1 /** 
  2 * 初始化时加载 
  3 */ 
  4 // ko数据绑定
  5 var model;
  6 var viewModel;
  7 
  8 // 分页
  9 var page_size = 1
 10 var total_pages = 1;
 11 var visiblePages = 8;
 12 
 13 $(document).ready(function () {
 14     get_all_blogs(1);
 15 });
 16 
 17 /** 
 18 * 分页 
 19 */ 
 20 function twbsPagination() {
 21     $('#pagination_zc').twbsPagination({  
 22         totalPages: total_pages,  
 23         visiblePages: visiblePages > 8 ? 8 : visiblePages,  
 24         startPage: 1,
 25         first: "首页",  
 26         prev: "上一页",  
 27         next: "下一页",  
 28         last: "未页",  
 29         onPageClick: function (event, page) {
 30             get_all_blogs(page);
 31         }
 32     });  
 33 }
 34 
 35 /** 
 36 * 获取所有日志信息 
 37 */ 
 38 function get_all_blogs(current_page) {
 39     $.ajax({
 40         type: "POST",
 41         url: "/manage/blogs/query_all_blogs",
 42         data: { 
 43             "_xsrf": getCookie("_xsrf"),
 44             "current_page": current_page
 45         },
 46         success: function (data) {
 47             if(data["status"] == "success"){
 48                 total_pages = parseInt(data["info"].total_pages);
 49                 if(total_pages == 0)
 50                 {
 51                     total_pages = 1;
 52                 }
 53 
 54                 if(viewModel == undefined){
 55                     viewModel = ko.mapping.fromJS(data["info"].current_data);
 56                     model = ko.toJS(viewModel);
 57                     ko.applyBindings(viewModel);
 58                     twbsPagination();
 59                 }
 60                 else{
 61                     if(page_size != total_pages){
 62                         $('#pagination_zc').remove();  
 63                         $("#pagination_box").append('<ul id="pagination_zc" class="pagination-sm"></ul>');
 64                         twbsPagination();
 65                     }
 66                     ko.mapping.fromJS(data["info"].current_data, viewModel);
 67                     model = ko.toJS(viewModel);
 68                 }
 69                 $("#table_title").html("日 志 列 表 (" + data["info"].total_count + ")");
 70                 page_size = total_pages;
 71             }
 72         },
 73         error : function() {       
 74             errNotify("可能为网络异常，请检查您的网络！");
 75         } 
 76     });
 77 }
 78 
 79 /** 
 80 * 显示博客信息
 81 */ 
 82 function show_blog(name) {
 83     console.log("待完成");
 84     console.log(name.id());
 85     console.log(name.blog_title());
 86 }
 87 
 88 /** 
 89 * 编辑博客
 90 */ 
 91 function edit_blog(name) {
 92     window.location.href = "/blog/edit/info?id=" + name.id();
 93 }
 94 
 95 /** 
 96 * 删除博客
 97 */ 
 98 function delete_blog(name) {
 99     $.messager.model = { 
100         ok:{ text: "残忍删除", classed: 'btn-info' },
101         cancel: { text: "勉强挽留", classed: 'btn-default' }
102     };
103 
104     $.messager.confirm("删除日志", "确定删除此日志吗？", function() {
105         var blog_id = name.id();
106         $.ajax({
107             type: "POST",
108             url: "/manage/blogs/delete_blog",
109             data: { 
110                 "_xsrf": getCookie("_xsrf"),
111                 "blog_id": blog_id
112             },
113             success: function (data) {
114                 if(data["status"] == "error"){
115                     errNotify("删除错误！
 请检查网络状态是否正常！");
116                 }
117                 else{
118                     viewModel.remove(name);
119                     model = ko.toJS(viewModel);
120                     successNotify("删除成功！");
121                 }
122             },
123             error : function() {       
124                 errNotify("error!");
125             } 
126         });
127     });
128 }
129 
130 /** 
131 * 显示作者信息
132 */ 
133 function show_author(name) {
134     console.log("待完成");
135 }
136 
137 /** 
138 * 显示日志标题信息
139 */ 
140 function show_title(blog_title) {
141     var title = blog_title()
142     if(title.length > 25){
143         return title.slice(0, 25) + "...";
144     }
145     return title
146 }
147 
148 /** 
149 * 显示日志简介信息
150 */ 
151 function show_summary(blog_summary) {
152     var summary = blog_summary()
153     if(summary.length > 25){
154         return summary.slice(0, 25) + "...";
155     }
156     return summary
157 }

View Code

newblog.htm

 1 {% extends "../base.htm" %}
 2 
 3 {%block header%}
 4     {%include '../header.htm'%}
 5 {%end%} 
 6 
 7 {%block content%}
 8 <link rel="stylesheet" href="{{ static_url('css/components/bootstrap-markdown.min.css') }}">
 9 <script src="{{ static_url('js/components/bootstrap-markdown.js') }}"></script>
10 <script src="{{ static_url('js/components/to-markdown.js') }}"></script>
11 <script src="{{ static_url('js/components/markdown.js') }}"></script>
12 <script src="{{ static_url('js/blog/newblog.js') }}"></script>
13 
14 <div class="bs-docs-container">
15     <div class="container">
16         <div class="row">
17             <div class="col-md-12">
18                 <div class="row" style="margin-top: 10px; margin-bottom: 10px">
19                     <input type="text" id="blog_title" class="form-control" placeholder="日志标题" required>
20                         
21                     <textarea id="blog_summary" style="100%" placeholder="简要说明"></textarea>
22 
23                     <textarea id="blog_content" data-provide="markdown" placeholder="日志正文" rows="25"></textarea>
24                     <hr/>
25                     <div role="button" class="btn btn-info" onclick="add_blog()" style="float: right"><span class="glyphicon glyphicon-save"> 保 存</span></div>
26                 </div>
27             </div>
28         </div>
29     </div>
30 </div>
31 {%end%}
32 
33 {%block footer%}
34     {%include '../footer.htm'%}
35 {%end%}

View Code

对应的js/blog/newblog.js

 1 /** 
 2 * 初始化时加载 
 3 */ 
 4 $(document).ready(function () {
 5     
 6 });
 7 
 8 /** 
 9 * 新增日志 
10 */ 
11 function add_blog() {
12     var blog_title = $("#blog_title").val();
13     var blog_summary = $("#blog_summary").val();
14     var blog_content = $("#blog_content").val();
15 
16     if(blog_title == "")
17     {
18         errNotify("标题不能为空！");
19         return;
20     }
21     else if(blog_content == "")
22     {
23         errNotify("正文不能为空！");
24         return;
25     }
26 
27     $.ajax({
28         type: "POST",
29         url: "/blog/new/add_blog",
30         data: { 
31             "_xsrf": getCookie("_xsrf"),
32             "blog_title": blog_title,
33             "blog_summary": blog_summary,
34             "blog_content": blog_content
35         },
36         success: function (data) {
37             if(data["status"] == "fail"){
38                 warningNotify("新增失败！" + data["info"]);
39             }
40             else{
41                 successNotify("新增成功！");
42             }
43         },
44         error : function() {       
45             errNotify("可能为网络异常，请检查您的网络！");
46         } 
47     });
48 }

View Code

editblog.htm

 1 {% extends "../base.htm" %}
 2 
 3 {%block header%}
 4     {%include '../header.htm'%}
 5 {%end%} 
 6 
 7 {%block content%}
 8 <link rel="stylesheet" href="{{ static_url('css/components/bootstrap-markdown.min.css') }}">
 9 <script src="{{ static_url('js/components/bootstrap-markdown.js') }}"></script>
10 <script src="{{ static_url('js/components/to-markdown.js') }}"></script>
11 <script src="{{ static_url('js/components/markdown.js') }}"></script>
12 <script src="{{ static_url('js/blog/editblog.js') }}"></script>
13 
14 <div class="bs-docs-container">
15     <div class="container">
16         <div class="row">
17             <div class="col-md-12">
18                 <div class="row" style="margin-top: 10px; margin-bottom: 10px">
19                     <h4 id="blog_id" style="display: none">{{blog_id}}</h4>
20 
21                     <input type="text" style="font-weight:bold;" id="blog_title" class="form-control" placeholder="日志标题" required>
22                         
23                     <textarea id="blog_summary" style="100%" placeholder="简要说明"></textarea>
24 
25                     <textarea id="blog_content" data-provide="markdown" placeholder="日志正文" rows="25" autofocus></textarea>
26                     <hr/>
27                     <div role="button" class="btn btn-info" onclick="update_blog()" style="float: right"><span class="glyphicon glyphicon-save"> 更 新</span></div>
28                 </div>
29             </div>
30         </div>
31     </div>
32 </div>
33 {%end%}
34 
35 {%block footer%}
36     {%include '../footer.htm'%}
37 {%end%}

View Code

对应的js/blog/editblog.js

 1 /** 
 2 * 初始化时加载 
 3 */ 
 4 $(document).ready(function () {
 5     show_edit_blog();
 6 });
 7 
 8 function show_edit_blog() {
 9     blog_id = $("#blog_id").text();
10 
11     if (blog_id == "") {
12         errNotify("缺少必要的参数(blog_id)！");
13         return;
14     }
15 
16     $.ajax({
17         type: "POST",
18         url: "/blog/edit/edit_blog_info",
19         data: { 
20             "_xsrf": getCookie("_xsrf"),
21             "blog_id": blog_id
22         },
23         success: function (data) {
24             if(data["status"] == "fail"){
25                 warningNotify("查询失败！可能此日志已被删除！" + data["info"]);
26             }
27             else{
28                 $("#blog_title").val(data["info"][0].blog_title);
29                 $("#blog_summary").val(data["info"][0].blog_summary);
30                 $("#blog_content").val(data["info"][0].blog_content);
31             }
32         },
33         error : function() {
34             errNotify("可能为网络异常，请检查您的网络！");
35         } 
36     });
37 }
38 
39 /** 
40 * 更新日志 
41 */ 
42 function update_blog() {
43     var blog_id = $("#blog_id").text();
44     var blog_title = $("#blog_title").val();
45     var blog_summary = $("#blog_summary").val();
46     var blog_content = $("#blog_content").val();
47 
48     if(blog_title == "")
49     {
50         errNotify("标题不能为空！");
51         return;
52     }
53     else if(blog_content == "")
54     {
55         errNotify("正文不能为空！");
56         return;
57     }
58 
59     $.ajax({
60         type: "POST",
61         url: "/blog/edit/update_blog",
62         data: { 
63             "_xsrf": getCookie("_xsrf"),
64             "blog_id": blog_id,
65             "blog_title": blog_title,
66             "blog_summary": blog_summary,
67             "blog_content": blog_content
68         },
69         success: function (data) {
70             if(data["status"] == "success"){
71                 successNotify("更新成功！");
72             }
73             else{
74                 warningNotify("更新失败！" + data["info"]);
75             }
76         },
77         error : function() {       
78             errNotify("可能为网络异常，请检查您的网络！");
79         } 
80     });
81 }

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原文地址：https://www.cnblogs.com/jakeyChen/p/4930239.html