发布功能完成。

from functools import wraps


def loginFirst(func): #参数是函数
    @wraps(func)
    def wrapper(*args, ** kwargs): #定义个函数将其返回
        if session.get(‘user‘):
            return func(*args, ** kwargs)
        else:
            return redirect(url_for(‘login‘))
    return wrapper #返回一个函数

@app.route(‘/wenda/‘,methods=[‘GET‘, ‘POST‘])  # 跳转注册,methods定义它有两种请求方式
@loginFirst
def wenda():
    if request.method == ‘GET‘:
        return render_template(‘wenda.html‘)
    else:
        title = request.form.get(‘title‘)
        detail = request.form.get(‘detail‘)
        author_id = User.query.filter(User.username == session.get(‘user‘)).first().id
        wenda = Wenda(title = title,detail =detail,author_id = author_id)
        db.session.add(wenda)
        db.session.commit()
        return redirect(url_for(‘moban‘))

class Wenda(db.Model):
    __tablename__ = ‘wenda‘
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    title = db.Column(db.String(100), nullable=False)
    detail = db.Column(db.Text, nullable=False)
    creat_time = db.Column(db.DateTime, default=datetime.now)
    author_id = db.Column(db.Integer, db.ForeignKey(‘user.id‘))
    author = db.relationship(‘User‘, backref=db.backref(‘wenda‘))

        db.session.add(wenda)
        db.session.commit()
        return redirect(url_for(‘moban‘))