从首页问答标题到问答详情页
主PY文件写视图函数，带id参数。
@app.route('/detail/<question_id>')
def detail(question_id):
quest =
return render_template('detail.html', ques = quest)
@app.route('/detail<question_id>') def detail(question_id): quest = Question.query.filter(Question.id == question_id).first() return render_template('detail.html',quest = quest)
首页标题的标签做带参数的链接。
{{ url_for('detail',question_id = foo.id) }}
<!DOCTYPE html> <html lang="en"> <head> {% extends 'test1.html' %} <meta charset="UTF-8"> <title>{% block title %} 首页 {% endblock %}</title> {% block head %} <link rel="stylesheet" type="text/css" href="../static/css/admin.css"> <link rel="stylesheet" href="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js"></script> <script src="http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js"></script> {% endblock %} </head> <body> {% block body %} <p>{{ user }}context</p> <div class="col-md-4 column"> <ul> {% for foo in questions %} <li> <a href="{{ url_for('detail',question_id = foo.id) }}">{{ foo.title}}</a><br> <a href="#">{{ foo.title }}</a><br> <p>{{ foo.detail }}</p> <a href="{{ url_for('usercenter',user_id = foo.author_id) }}">{{ foo.author.username}}评论：({{ foo.comments|length }})</a> <span class="t">{{ foo.creat_time }}</span> </li> {% endfor %} </ul> </div> {% endblock %} </body> </html>
在详情页将数据的显示在恰当的位置。
{{ ques.title}}
{{ ques.id }}{{ ques.creat_time }}
{{ ques.author.username }}
{{ ques.detail }}
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>{% block title %} 提问详情 {% endblock %}</title> {% block head %} {% endblock %} </head> <body> {% block body %} <h1>提问详情</h1> <div class="container"> <div class="row clearfix"> <div class="col-md-12 column"> <h3 class="text-center"> {{ quest.title }}<br> <small>{{ quest.author.username }} <span class=""> {{ quest.creat_time }} </span> </small> </h3> <p class="text-center"> {{ quest.detail }} </p> <hr> <form role="form"> <div class="form-group"> <label for="exampleInputEmail1">Write down your answer~~</label><input type="email" class="form-control" id="exampleInputEmail1" /> </div> <button type="submit" class="btn btn-default">Submit</button> </form> </div> </div> </div> {% endblock %} </body> </html>
建立评论的对象关系映射：
class Comment(db.Model):
__tablename__='comment'
尝试实现发布评论。
class Comment(db.Model): __tablename__='comment' id = db.Column(db.Integer,primary_key=True,autoincrement=True) author_id = db.Column(db.Integer,db.ForeignKey('user.id')) question_id = db.Column(db.Integer,db.ForeignKey('question.id')) creat_time = db.Column(db.DateTime,default=datetime.now) detail = db.Column(db.Text,nullable=False) question = db.relationship('Question',backref = db.backref('comments')) author = db.relationship('User',backref = db.backref('comments'))
