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)

@app.route('/usercenter/<user_id>/<tag>')
@loginFirst
def usercenter(user_id,tag):
    user=User.query.filter(User.id==user_id).first()
    context={
        'username_id': user.id,
        'username':user.username,
        'questions':user.question,
        'comments':user.comment
    }
    if tag == '1':
        return render_template('usercenter.html',**context)
    elif tag == '2':
        return render_template('all_question.html', **context)
    else:
        return render_template('all_comment.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>

{% block loginhead %}
    <style>
    .nav_ul li{
        list-style: none;
        float: left;
        margin: 10px;
    }
    </style>

{% endblock %}
{% block body %}
<ul class="nav_ul">
<li role="presentation"><a href="{{ url_for('usercenter',user_id = username_id,tag='2') }}">全部问答</a></li>
<li role="presentation"> <a href="{{ url_for('usercenter',user_id = username_id,tag='3') }}">全部评论</a></li>
<li role="presentation"><a href="{{ url_for('usercenter',user_id = username_id,tag='1') }}">个人信息</a></li>
</ul>
{% block user %}{% endblock %}

{% endblock %}

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

<div class="list-group">
                 <a href="{{ url_for('usercenter',user_id=foo.author.id,tag='1') }}" class="list-group-item active">作者：{{ foo.author.username}}</a>

                <div class="list-group-item">