完成评论功能

定义评论的视图函数
@app.route('/comment/',methods=['POST'])
def comment()：
读取前端页面数据，保存到数据库中
用<input type="hidden" 方法获取前端的"question_id"
显示评论次数
要求评论前登录
尝试实现详情页面下的评论列表显示

1.定义评论的视图函数

 1 # 发布评论
 2 @app.route('/answer/', methods=['GET', 'POST'])
 3 def answer():
 4     if request.method == 'POST':
 5         book_id = request.form.get('book_id')
 6         question_id = request.form.get('question_id')
 7         answer_id = request.form.get('answer_id')
 8         content = request.form.get('content')
 9         commentaries = Commentaries(id='1', book_id=book_id, question_id=question_id, answer_id=answer_id,
10                                     content=content)
11         db.session.add(commentaries)
12         db.session.commit()
13         commentaries = Commentaries.query.filter(Commentaries.book_id == book_id).order_by('-date').all()
14         context = {
15             'commentaries': commentaries,
16         }
17         return render_template('answer.html', **context)
18     else:
19         book_id = request.args.get('book_id')
20         commentaries = Commentaries.query.filter(Commentaries.book_id == book_id).order_by('-date').all()
21         context = {
22             'commentaries': commentaries,
23         }
24         return render_template('answer.html', **context)

2.用<input type="hidden" 方法获取前端的"question_id"

 1 　　　　$('#btn_submit_regis').click(function () {
 2             $.post(
 3                 '{{  url_for('answer')  }}',
 4                 {
 5                     content: $('#content').val(),
 6                     book_id: '{{ book.id }}',
 7                     question_id: '{{ book.authorClass.id }}',
 8                     answer_id: '{{ user.id }}'
 9                 },
10                 function (data) {
11                     $('#content').val('')
12                     $('#answer').html(data)
13                 }
14             )
15         })

 1 　　　　　　　　　　<div style="margin-left: 20px;margin-bottom: 50px;">
 2                         <form class="new-comment" style="padding-bottom: 30px;">
 3                             <a class="avatar" style="position: absolute;left: -48px;"><img
 4                                     src="http://www.bookmarkye.com/5.jpg" width="64px"></a>
 5                             <div class="sign-container">
 6                                 <div class="layui-form-item layui-form-text">
 7                                     <label class="layui-form-label" for="content">评论内容</label>
 8                                     <div class="layui-input-block">
 9                                         <textarea name="content" id="content" rows="5" placeholder="请输入评论内容"
10                                                   class="layui-textarea"></textarea>
11                                     </div>
12                                 </div>
13                                 <!--注册按钮-->
14                                 <div class="btn_submit_regis">
15                                     <button type="button" id="btn_submit_regis" class="layui-btn layui-btn-normal">发布
16                                     </button>
17                                 </div>
18                             </div>
19                         </form>
20                     </div>

3.显示评论次数

4.要求评论前登录

 1 　　　　　　　　　　<!-- 评论区或登录区 -->
 2                 {% if not title %}
 3                     <div style="margin-left: 20px;margin-bottom: 50px;">
 4                         <form class="new-comment"><a class="avatar" style="position: absolute;left: -48px;">
 5                             <img src="{{ url_for('static',filename='img/default_logo.jpg') }}" width="64px"></a>
 6                             <div class="poi_sign-container">
 7                                 <a href="{{ url_for('login',poi=book.id) }}" class="layui-btn">登录</a>
 8                                 <span>后发表评论</span>
 9                             </div>
10                         </form>
11                     </div>
12                 {% else %}
13                     <div style="margin-left: 20px;margin-bottom: 50px;">
14                         <form class="new-comment" style="padding-bottom: 30px;">
15                             <a class="avatar" style="position: absolute;left: -48px;"><img
16                                     src="http://www.bookmarkye.com/5.jpg" width="64px"></a>
17                             <div class="sign-container">
18                                 <div class="layui-form-item layui-form-text">
19                                     <label class="layui-form-label" for="content">评论内容</label>
20                                     <div class="layui-input-block">
21                                         <textarea name="content" id="content" rows="5" placeholder="请输入评论内容"
22                                                   class="layui-textarea"></textarea>
23                                     </div>
24                                 </div>
25                                 <!--注册按钮-->
26                                 <div class="btn_submit_regis">
27                                     <button type="button" id="btn_submit_regis" class="layui-btn layui-btn-normal">发布
28                                     </button>
29                                 </div>
30                             </div>
31                         </form>
32                     </div>
33                 {% endif %}

5.尝试实现详情页面下的评论列表显示