完成个人中心—导航标签

1个人中心—视图函数带标签页面参数tag
@app.route('/usercenter/<user_id>/<tag>')
def usercenter(user_id, tag):
   if tag == ‘1':
       return render_template('usercenter1.html', **context)

2个人中心—导航标签链接增加tag参数
<li role=“presentation”><a href=“{{ url_for(‘usercenter’,user_id = user.id,tag = ‘1’) }}">全部问答</a></li>

3个人中心—有链接到个人中心页面的url增加tag参数
 <a href="{{ url_for('usercenter',user_id = session.get('userid'), tag=1) }}">{{ session.get('user') }}</a)

@app.route('/userCenter/<user_id>/<tag>',methods=['GET', 'POST'])
@loginFirst
def userCenter(user_id, tag):
    user = User.query.filter(User.id == user_id).first()
    context = {
        'user':user,
        'username': user.username,
        'questions': user.question,
        'comments': user.comment
    }
    if tag == '1':
        return render_template('userCenter1.html',**context)
    elif tag == '2':
        return render_template('userCenter2.html',**context)
    else:
        return render_template('userCenter3.html', **context)

e="margin:1%; list-style: none;float: left;"><a href="{{ url_for ('userCenter',user_id=user.id,tag=1) }}">全部问答</a></li>
<li role="presentation" style="margin:1%; list-style: none;float: left;"><a href="{{ url_for ('userCenter',user_id=user.id,tag=2) }}">全部评论</a></li>
<li role="presentation" style="margin:1%; list-style: none;float: left;"><a href="{{ url_for ('userCenter',user_id=user.id,tag=3) }}">个人资料</a></li>

<a  class="author" href="{{ url_for ('userCenter',user_id=each.author.id,tag=1) }}">{{ each.author.username }}</a>