完成首页的公告列表，标签列表等功能。

problem/views.py

@@ -6,13 +6,14 @@ import hashlib
 import json
 
 from django.shortcuts import render
-from django.db.models import Q
+from django.db.models import Q, Count
 from django.core.paginator import Paginator
 
 from rest_framework.views import APIView
 
 from django.conf import settings
 
+from announcement.models import Announcement
 from utils.shortcuts import (serializer_invalid_response, error_response,
                              success_response, paginate, rand_str, error_page)
 from .serizalizers import (CreateProblemSerializer, EditProblemSerializer, ProblemSerializer,
@@ -251,7 +252,13 @@ def problem_list_page(request, page=1):
     except Exception:
         pass
 
+    # 右侧的公告列表
+    announcements = Announcement.objects.filter(is_global=True, visible=True).order_by("-create_time")
+    # 右侧标签列表 按照关联的题目的数量排序 排除题目数量为0的
+    tags = ProblemTag.objects.annotate(problem_number=Count("problem")).filter(problem_number__gt=0).order_by("-problem_number")
+
     return render(request, "oj/problem/problem_list.html",
                   {"problems": current_page, "page": int(page),
                    "previous_page": previous_page, "next_page": next_page,
-                   "keyword": keyword, "tag": tag_text})
+                   "keyword": keyword, "tag": tag_text,
+                   "announcements": announcements, "tags": tags})

static/src/css/oj.css

@@ -67,4 +67,8 @@ li.list-group-item {
 
 .panel>.list-group{
     padding: 0 0;
+}
+
+.ac-flag{
+    color: green;
 }

submission/models.py

@@ -6,12 +6,12 @@ from judge.judger.result import result
 
 class Submission(models.Model):
     id = models.CharField(max_length=32, default=rand_str, primary_key=True, db_index=True)
-    user_id = models.IntegerField()
+    user_id = models.IntegerField(db_index=True)
     create_time = models.DateTimeField(auto_now_add=True)
     result = models.IntegerField(default=result["waiting"])
     language = models.IntegerField()
     code = models.TextField()
-    problem_id = models.IntegerField()
+    problem_id = models.IntegerField(db_index=True)
     # 这个字段可能存储很多数据 比如编译错误、系统错误的时候，存储错误原因字符串
     # 正常运行的时候存储 lrun 的判题结果，比如cpu时间内存之类的
     info = models.TextField(blank=True, null=True)

template/oj/problem/problem_list.html

@@ -18,15 +18,17 @@
                     <table class="table table-striped">
                         <thead>
                         <tr>
+                            <th></th>
                             <th>#</th>
                             <th>题目</th>
-                            <th>难度</th>
-                            <th>通过率</th>
+                            <th><a href="/problems/?order_by=difficulty">难度</a></th>
+                            <th><a href="/problems/?order_by=aceptance">通过率</a></th>
                         </tr>
                         </thead>
                         <tbody>
                         {% for item in problems %}
                             <tr>
+                                <th><span class="glyphicon glyphicon-ok ac-flag"></span></th>
                                 <th scope="row"><a href="/problem/{{ item.id }}/">{{ item.id }}</a></th>
                                 <td><a href="/problem/{{ item.id }}/">{{ item.title }}</a></td>
                                 <td>{{ item.difficulty }}</td>
@@ -59,7 +61,11 @@
                             <span class="glyphicon glyphicon-info-sign" aria-hidden="true"></span>
                             公告
                         </h3></div>
-                    <div class="panel-body"> Panel content</div>
+                    <div class="panel-body">
+                        {% for item in announcements %}
+                            {{ forloop.counter }}.&nbsp;&nbsp;<a href="/announcement/{{ item.id }}/" target="_blank">{{ item.title }}</a>
+                        {% endfor %}
+                    </div>
                 </div>
                 <div class="panel panel-info">
                     <div class="panel-heading">
@@ -69,26 +75,12 @@
                         </h3>
                     </div>
                     <ul class="list-group">
-                        <li class="list-group-item problem-tag">
-                            <span class="badge">14</span>
-                            Cras justo odio
-                        </li>
-                        <li class="list-group-item problem-tag">
-                            <span class="badge">14</span>
-                            Cras justo odio
-                        </li>
-                        <li class="list-group-item problem-tag">
-                            <span class="badge">14</span>
-                            Cras justo odio
-                        </li>
-                        <li class="list-group-item problem-tag">
-                            <span class="badge">14</span>
-                            Cras justo odio
-                        </li>
-                        <li class="list-group-item problem-tag">
-                            <span class="badge">14</span>
-                            Cras justo odio
+                        {% for item in tags %}
+                        <li class="list-group-item problem-tag" onclick="location.href='/problems/?tag={{ item.name }}'">
+                            <span class="badge">{{ item.problem_number }}</span>
+                            {{ item.name }}
                         </li>
+                        {% endfor %}
                     </ul>
                 </div>