发布功能完成。

class Question(db.Model):
    __tablename__=‘question‘
    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)
    create_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(‘question‘))

def loginFirst(func):
    @wraps(func)
    def wrapper(*args,**kwargs):
        if session.get(‘user‘):
            return func (*args,**kwargs)
        else:
            return redirect(url_for(‘login‘))
    return wrapper

@app.route(‘/question/‘,methods=[‘GET‘,‘POST‘])
@loginFirst
def question():
    if request.method==‘GET‘:
        return render_template(‘question.html‘)
    else:
        title=request.form.get(‘title‘)
        detail=request.form.get(‘detail‘)
        author_id=User.query.filter(User.username==session.get(‘user‘)).first().id
        question=Question(title=title,detail=detail,author_id=author_id)
        db.session.add(question)
        db.session.commit()
        return redirect(url_for(‘index‘))

{% extends‘index.html‘ %}

{% block title %}发布问答 {% endblock %}

{% block head %}
 <link rel="stylesheet" type="text/css" href="{{ url_for(‘static‘,filename=‘css/886.css‘) }}">
    <script src="{{ url_for(‘static‘,filename=‘js/tt.js‘)}}"></script>
{% endblock %}

{% block main %}
    <div class="form-group">
    <form action="{{ url_for(‘question‘) }}" method="post">
        <label for="questionDetail">问题</label><br>
        <textarea class="form-control" rows="1" cols="50" id="questionDetail"></textarea><br>
    <label for="questionDetail">详情</label><br>
  <textarea class="form-control" rows="5" cols="50" id="questionDetail"></textarea><br>
     <button type="button">发布问答</button>
    </form>
    </div>
{% endblock %}