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 usercenter1(user_id,tag):
    user=User.query.filter(User.id==user_id).first()
    context={
        'user':user
    }
    if tag=='1':
        return render_template('userques.html',**context)
    elif tag=='2':
        return render_template('usercom.html', **context)
    else:
        return render_template('userinfo.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 %}Center{% endblock %}

{% block head %}
    <link href="{{ url_for('static',filename='CSS/center.css') }}" rel="stylesheet" type="text/css">
{% endblock %}

{% block main %}
<div class="center">
    <h2><a href="{{ url_for('usercenter1',user_id=user.id,tag=1) }}"> {{ user.username }}</a></h2>
    <ul class="base">
        <li role="presentation"><a href="{{ url_for('usercenter1',user_id=user.id,tag='1') }}">All Questions</a></li>
        <li role="presentation"><a href="{{ url_for('usercenter1',user_id=user.id,tag='2') }}">ALL Comments</a></li>
        <li role="presentation"><a href="{{ url_for('usercenter1',user_id=user.id,tag='3') }}">Personal Information</a></li>
    </ul>

   {% block usercenter %}{% endblock %}

</div>
{% endblock %}

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>

<a href="{{ url_for('usercenter1',user_id =session.get('id'),tag=1) }}" style="font-weight: 600">{{ username }}</a>
<a href="{{ url_for('usercenter1',user_id=foo.author_id,tag=1) }}">{{ foo.author.username }}</a>
<a href="{{ url_for('usercenter1',user_id=user.id,tag=1) }}"> {{ user.username }}</a>