python16_day20【Django_继续抽屉项目】

一、djangoAdmin和表结构

　　1.项目名称

　　　　python manage startapp web　　　　# 前端页面

　　　　python manage startapp repository   # 只是数据库

　　　　python manage startapp backend      # 后台管理

　　2.repository/models.py



from django.db import models

# Create your models here.


class UserInfo(models.Model):
    nid = models.AutoField(primary_key=True)
    username = models.CharField(max_length=32, unique=True)
    password = models.CharField(max_length=32)
    email = models.CharField(max_length=32, unique=True)
    ctime = models.DateTimeField()

    class Meta:
        verbose_name_plural = '用户表'    # 在django中显示表名称

    def __str__(self):
        return self.username
        # 显示字段对象名称


class NewsType(models.Model):
    nid = models.AutoField(primary_key=True)
    caption = models.CharField(max_length=32)

    class Meta:
        verbose_name_plural = "新闻类型"

    def __str__(self):
        return self.caption


class News(models.Model):
    nid = models.AutoField(primary_key=True)
    user_info = models.ForeignKey('UserInfo')
    news_type = models.ForeignKey('NewsType')
    title = models.CharField(max_length=32, db_index=True)
    url = models.CharField(max_length=128, null=True, blank=True)
    content = models.CharField(max_length=50)
    favor_count = models.IntegerField(default=0)
    comment_count = models.IntegerField(default=0)
    ctime = models.DateTimeField()
    img = models.CharField(max_length=32, default="/static/images/1.jpg")

    class Meta:
        verbose_name_plural = '新闻'

    def __str__(self):
        return self.title


class Favor(models.Model):
    nid = models.AutoField(primary_key=True)
    user_info = models.ForeignKey('UserInfo')
    news = models.ForeignKey('News')
    ctime = models.DateTimeField()

    def __str__(self):
        return "{0}<{1}>".format(self.news.title, self.user_info.username)

    class Meta:
        verbose_name_plural = '点赞记录'
        unique_together = (
            ("user_info", "news"),
        )


class Comment(models.Model):
    nid = models.AutoField(primary_key=True)
    user_info = models.ForeignKey('UserInfo')
    news = models.ForeignKey('News')
    ctime = models.DateTimeField()
    device = models.CharField(max_length=16, null=True, blank=True)
    content = models.CharField(max_length=150)
    reply_id = models.ForeignKey('Comment', related_name='b', null=True, blank=True)

    class Meta:
        verbose_name_plural = '评论表'







　　3.repository/admin.py




1 from django.contrib import admin
2 from repository.models import *
3 
4 # Register your models here.
5 admin.site.register(UserInfo)
6 admin.site.register(Comment)
7 admin.site.register(Favor)
8 admin.site.register(News)
9 admin.site.register(NewsType)




　　4. python manage.py createsuperuser


 



　　5. settings.py 注册项目　　




1 INSTALLED_APPS = [
2     'django.contrib.admin',
3     'django.contrib.auth',
4     'django.contrib.contenttypes',
5     'django.contrib.sessions',
6     'django.contrib.messages',
7     'django.contrib.staticfiles',
8     'repository',
9 ]




　　6.python manage.py makemigrations


　　　python manage.py migrate


　　7.http://127.0.0.1:8000/admin


 


 



　　8.备注：


　　　　允许为空：null=True,blank=True(djangoAdmin需要)



二、点赞


　　1.templates/index.html




<script src="/static/jquery.js"></script>
    <script>
        function doFavor(ths,nid) {

            if ($('#tl').attr('login') == "true"){
                $.ajax({
                url: '/do-favor/',
                type: "GET",
                data: {nid: nid},
                dataType: 'JSON',
                success:function (arg) {
                    if(arg.status == 1){
                        // -1
                        var favorCount = $(ths).find('.favor-count').text();
                        favorCount = parseInt(favorCount);
                        favorCount = favorCount -1;
                        $(ths).find('.favor-count').text(favorCount);
                        ZMM(ths,"-1");

                    }else if(arg.status == 2){
                        // +1
                        var favorCount = $(ths).find('.favor-count').text();
                        favorCount = parseInt(favorCount);
                        favorCount = favorCount + 1;
                        $(ths).find('.favor-count').text(favorCount);
                        ZMM(ths,"+1");

                    }else{
                        location.href = '/login/';
                    }
                }
            })
            }else{
                location.href = '/login/';
            }
        }


        function ZMM(ths,txt) {
            var fontSize = 5;
            var left = 5;
            var top = 5;
            var opacity = 1;

            var tag = document.createElement('span');
            tag.innerHTML = txt;
            tag.style.position = "absolute";
            tag.style.fontSize = fontSize + 'px';
            tag.style.left = left+ 'px';
            tag.style.top = top+ 'px';
            tag.style.opacity = opacity;
            $(ths).append(tag);

            var obj = setInterval(function () {
                fontSize = fontSize + 5;
                left = left + 5;
                top = top - 5;
                opacity = opacity - 0.1;
                tag.style.fontSize = fontSize + 'px';
                tag.style.left = left+ 'px';
                tag.style.top = top+ 'px';
                tag.style.opacity = opacity;
                if(left > 60){
                    clearInterval(obj);
                    tag.remove();
                }
            },100);
        }
    </script>




　　2.web/views.py




 1 def do_favor(request):
 2     """
 3     1. 获取新闻ID
 4     2. 当前登录的用户ID
 5     3. 在favor表中插入数据
 6     4. 新闻表中的favor_count + 1
 7     :param request:
 8     :return:
 9     """
10     ret = {'status': 0, 'error': ''}
11     if request.session.get('is_login'):
12         news_id = request.GET.get('nid')
13         current_user_id = request.session['user_info']['user_id']
14         ct = models.Favor.objects.filter(user_info_id=current_user_id,news_id=news_id).count()
15         if ct:
16             models.Favor.objects.filter(user_info_id=current_user_id, news_id=news_id).delete()
17             news_obj = models.News.objects.filter(nid=news_id).first()
18             temp = news_obj.favor_count - 1
19             models.News.objects.filter(nid=news_id).update(favor_count=temp)
20             ret['status'] = 1
21         else:
22             models.Favor.objects.create(user_info_id=current_user_id,news_id=news_id)
23             news_obj = models.News.objects.filter(nid=news_id).first()
24             temp = news_obj.favor_count + 1
25             models.News.objects.filter(nid=news_id).update(favor_count=temp)
26             ret['status'] = 2
27     return HttpResponse(json.dumps(ret))





三、评论区


　　注意：1张表自关联，使用了replay_id,通过python字典，列表数据类型的引用特性处理。需要使用迭代方式处理，最后返回给前端。其实后端不应该处理标签，应该放在前端处理。


　　1.web/views.py




 1 def comment(request):
 2     # 模拟数据
 3     # comment_list = [
 4     #     {'id': 1, 'news_id': 1, 'user_id': 10, 'content': "写的什么玩意呀", 'reply_id': None},
 5     #     {'id': 2, 'news_id': 1, 'user_id': 11, 'content': "还真不是玩意 ", 'reply_id': 1},
 6     #     {'id': 3, 'news_id': 1, 'user_id': 12, 'content': "写的真好 ", 'reply_id': 1},
 7     #     {'id': 4, 'news_id': 1, 'user_id': 11, 'content': "写的真好 ", 'reply_id': 3},
 8     #     {'id': 5, 'news_id': 1, 'user_id': 19, 'content': "balabala ", 'reply_id': None},
 9     #     {'id': 6, 'news_id': 1, 'user_id': 11, 'content': "你可以趣事了 ", 'reply_id': 2},
10     #     {'id': 7, 'news_id': 1, 'user_id': 11, 'content': "号的", 'reply_id': 6},
11     # ]
12     comment_list = []
13 
14     new_nid = request.GET.get('nid')
15     obj = News.objects.filter(nid=new_nid)[0]
16     for row in obj.comment_set.values():
17         comment_list.append(row)
18 
19     # 一.变成字典,id为K, 字典为V
20     comment_dict = {}
21     for row in comment_list:
22         row['child'] = []  # 增加空字段
23         comment_dict[row['nid']] = row  # ID做为K,行数据做V
24 
25     # 二.找到replay_id后,加到后面的child, python数据类型,除了int,str其它都是引用.
26     for row in comment_list:
27         if row['reply_id_id']:
28             replay_id = row['reply_id_id']
29             comment_dict[replay_id]['child'].append(row)
30 
31     # 三.这样回复链就做好了.
32     commen_reuslt = {}
33     for k, v in comment_dict.items():
34         if v['reply_id_id'] == None:
35             commen_reuslt[k] = v
36 
37     commen_reuslt = create_html(commen_reuslt)
38     return HttpResponse(json.dumps(commen_reuslt, ensure_ascii=False))
39 
40 
41 def create_child_node(child_comment):
42     prev = """
43         <div class="comment1">
44             <div class="content1">
45         """
46     for child in child_comment:
47         tpl = '<div class="item">%s</div>'
48         content = tpl % child['content']
49         prev = prev + content
50         if child['child']:
51             # 有子评论
52             node = create_child_node(child['child'])
53             prev = prev + node
54 
55     end = """
56             </div>
57         </div>
58         """
59     return prev + end
60 
61 
62 def create_html(comment_result):
63     prev = """
64     <div class="comment1">
65         <div class="content1">
66     """
67 
68     for k,v in comment_result.items():
69         tpl = '<div class="item">%s</div>'
70         content = tpl %v['content']
71         prev = prev + content
72         if v['child']:
73             # 有子评论
74             node = create_child_node(v['child'])
75             prev = prev + node
76 
77     end = """
78         </div>
79     </div>
80     """
81     return prev + end




　　2.templates/index.html




 1    
 2 
 3             <div id="comment_area_{{item.nid}}" class="comment-box-area hide" >
 4                                     <div class="pinglun arrow"></div>
 5                                     <a class="pinglun close-comt" title="关闭" href="javascript:void(0);"></a>
 6                                     <div class="corner comment-box clearfix" >
 7                                         <div class="loading-ico loading-ico-top"  style="margin-left:230px;">加载中，请稍候...</div>
 8                                         <div class="comment-box-top " >
 9                                             <div class="tip-1">最热评论(<span>{{item.8}}</span>)</div>
10                                             <div class="tip-2">
11                                                 <a href="#" target="_blank">
12                                                     <em class="pinglun em1"></em>
13                                                     <span>去评论页面</span>
14                                                 </a>
15                                             </div>
16                                         </div>
17                                         <ul id="comment_list_{{item.nid}}" class="filetree comment-list-top-2 treeview ">
18 
19                                         </ul>
20 
21 
22 
23 
24 function ToggleCommentArea(nid){
25         var $comment_area = $("#comment_area_" + nid);
26         if($comment_area.hasClass('hide')){
27             $comment_area.removeClass('hide');
28             var $comment_list = $("#comment_list_" + nid);
29             $.ajax({
30                 url: '/comment/',
31                 type: 'GET',
32                 data: {nid: nid},
33                 dataType:"JSON",
34                 success: function(arg){
35                     $comment_list.empty();
36                     $comment_list.append(arg);
37                     var $loading = $comment_area.find('.comment-box').children().first();
38                     $loading.addClass('hide');
39                     $loading.siblings().removeClass('hide');
40                 }
41             })
42         }else{
43             $comment_area.addClass('hide');
44         }
45     }





四、kingeditor


http://www.cnblogs.com/wupeiqi/articles/6307554.html



        

	      

	    

	  

	  

	    
      
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          原文地址：https://www.cnblogs.com/weibiao/p/6992214.html