完成个人中心—导航标签

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('/username/<user_id>/<tag>')
@loginFirst
def usercenter(user_id, tag):
    user = User.query.filter(User.id == user_id).first()
    context = {
        'user': user,
        'post': user.post,
        'comments': user.comments
    }
    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)

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>

{% extends 'base.html' %}
{% block title %}个人中心{% endblock %}
{% block head %}
    <style>
        .nav_ul li {
            list-style: none;
            float: left;
            margin: 10px;
        }
    </style>
{% endblock %}

{% block main %}

<ul class="nav_ul">
    <li role="presentation"><a href="{{url_for('usercenter',user_id=user.id,tag=1)}}">全部问答</a></li>
    <li role="presentation"><a href="{{url_for('usercenter',user_id=user.id,tag=2)}}">全部评论</a></li>
    <li role="presentation"><a href="{{url_for('usercenter',user_id=user.id,tag=3)}}">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>

{% extends 'base.html' %}
{% block title %}{% endblock %}


{% block main %}
    <p>{{ user }}发布问答</p>
    <ul class="list-group">
    {% for foo in post %}
       <li class="list-group-item" >
           <span class="glyphicon glyphicon-leaf" aria-hidden="true"></span>
{#           <a href="#">{{ foo.author.username }}</a>#}
           <br>
           <a href="{{url_for('detail',post_id=foo.id)}}">{{foo.title}}</a>
           <a href="{{ url_for('usercenter',user_id=foo.author_id,tag=1)}}">{{ foo.author.username }}<br>{{ foo.author.username }}<br>评论:({{ foo.comments|length }})</a><br>
           <span class="badge">{{ foo.creat_time }}</span>
           <p style="">{{ foo.detail }}</p>

       </li>
    {% endfor %}
    </ul>
{% endblock %}