flask页面操作gpn接口

https://wizardforcel.gitbooks.io/flask-extension-docs/content

http://cabeza.cn/blog/2016/02/28/datatable-learning-note-1/

页面

......
<table class="pure-table">
    <tr>
        <td><i class="fa fa-cog fa-lg"></i> 切换</td>
        <td>
            <input name="bandwidth" type="radio" id="radio_5" value="5"> 关闭
            <input name="bandwidth" type="radio" id="radio_100" value="100"> 开启
        </td>
        <td>
            <button id="submit" class="pure-button button-small pure-button-primary" disabled="disabled">提交</button>
        </td>
    </tr>
    </table>
......

$(function() {
    var old_qos;

    // gpn当前状态
    $.ajax({
        type: 'GET',
        url: $SCRIPT_ROOT + "{{ url_for('get_gpn_bandwidth') }}",
        dataType: 'json',
        contentType: 'application/json;charset=utf-8',
        success: function(data){
            old_qos = data.qos
            $('#radio_' + old_qos).attr('checked', 'checked');
        },
    });

    // 提交按钮激活
    $('input[name=bandwidth]').change(function(){
        if ( $('input[name=bandwidth]:checked').val() == old_qos ) {
            $('#submit').attr('disabled', 'disabled');
        } else {
            $('#submit').removeAttr('disabled');
        }
    });

    // 提交gpn设置
    $('#submit').click(function(){
        var new_qos = $('input[name=bandwidth]:checked').val();
        data = {'old_qos': old_qos, 'new_qos': new_qos};
        $.ajax({
            type: 'POST',
            url: $SCRIPT_ROOT + "{{ url_for('set_gpn_bandwidth') }}",
            dataType: 'json',
            contentType: 'application/json;charset=utf-8',
            data: JSON.stringify(data),
            success: function(data){
                console.log(data);
                window.location.href = "{{ url_for('gpn') }}";
            }
        });
    })
});

后台

@app.route('/gpn/', methods=['GET'])
@login_required
def gpn():
	gpns = GPN.query.order_by(GPN.id.desc()).limit(20)
	return render_template('gpn.html', gpns=gpns)

@app.route('/json/gpn/bandwidth', methods=['GET'])
@login_required
def get_gpn_bandwidth():
	'''
		获取gpn当前状态
	'''
	gpn = GPN.query.order_by(GPN.id.desc()).first()
	return json.dumps({'qos': gpn.bandwidth})

@app.route('/json/gpn/bandwidth', methods=['POST'])
@login_required
def set_gpn_bandwidth():
	'''
		设置gpn带宽
	'''
	old_qos, new_qos = int(request.json['old_qos']), int(request.json['new_qos'])

	url_token = 'http://xxx.com/get_token/'
	url_gpn = 'http://xxx.com/gpn/update/'

	username = 'xxxx'
	password = 'xxxx'

	# get token
	headers = {'username': username, 'password': password}
	req = urllib2.Request(url_token, headers=headers)
	resp = urllib2.urlopen(req).read()
	token = json.loads(resp)['Access-Token']

	# set qos
	data = {'qos': new_qos, 'area_id': 'cn'}
	headers = {'token': token, 'Content-Type': 'application/json'}
	req = urllib2.Request(url_gpn, headers=headers, data=json.dumps(data))
	
	try:
		resp = urllib2.urlopen(req).read()
		bandwidth = new_qos
		status = json.loads(resp)['status']
		message = json.loads(resp)['messsage']
	except urllib2.HTTPError, e:
   		bandwidth = old_qos
		status = 'failure'
		message = e.code
	except urllib2.URLError, e:
   		bandwidth = old_qos
		status = 'failure'
		message = e.reason

	# submit data
	gpn = GPN()

	gpn.bandwidth = bandwidth
	gpn.updated_user = current_user.name
	gpn.updated_time = datetime.datetime.now()
	gpn.status = status
	gpn.message = message
	
	db.session.add(gpn)
	db.session.commit()

	return json.dumps({'current_qos': bandwidth})