Question

我的文件temp.py从连接到我的rasbperry的传感器读取数据。我的观点将其发送到html文件。我认为我在index.html中的调用不正确。因为当我运行我的Django项目时，它会返回一个空白页面

views.py

from django.shortcuts import render
from temp import get_temp
import json 
def index(request):
  return render(request, 'aps/index.html', {'t' : get_temp()})

temp.py

def get_temp() :

tfile = open("/sys/bus/w1/devices/28-0000075292ed/w1_slave")
text = tfile.read()
tfile.close()
secondline = text.split("\n")[1]
temperaturedata = secondline.split(" ")[9]
temperature  = float(temperaturedata[2:])
temperature = temperature / 1000
return temperature

的index.html

＆＃13;

<!DOCTYPE HTML>
<html>
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
		<title> Temperature Sensor</title>

		<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script>
		<style type="text/css">
${demo.css}
		</style>
		<script type="text/javascript">
$(function () {
    $(document).ready(function () {
        Highcharts.setOptions({
            global: {
                useUTC: false
            }
        });

        $('#container').highcharts({
            chart: {
                type: 'spline',
                animation: Highcharts.svg, // don't animate in old IE
                marginRight: 10,
                events: {
                    load: function () {

                        // set up the updating of the chart each second
                        var series = this.series[0];
                        setInterval(function () {
                            var x = (new Date()).getTime(), // current time
                                y = {{ t }} ;
                            series.addPoint([x, y], true, true);
                        }, 3000);
                    }
                }
            },
            title: {
                text: 'Live sensor temperature data'
            },
            xAxis: {
                type: 'datetime',
                tickPixelInterval: 150
            },
            yAxis: {
                title: {
                    text: 'Value'
                },
                plotLines: [{
                    value: 0,
                    width: 1,
                    color: '#808080'
                }]
            },
            tooltip: {
                formatter: function () {
                    return '<b>' + this.series.name + '</b><br/>' +
                        Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '<br/>' +
                        Highcharts.numberFormat(this.y, 2);
                }
            },
            legend: {
                enabled: false
            },
            exporting: {
                enabled: false
            },
            series: [{
                name: 'sensor data',
                data: (function () {
                  
                    var data = [],
                        time = (new Date()).getTime(),
                        i;

                    for (i = -19; i <= 0; i += 1) {
                        data.push({
                            x: time + i * 1000,
                            y: {{ t }}
                        });
                    }
                    return data;
                }())
            }]
        });
    });
});
		</script>
	</head>
	<body>
<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>

<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>

	</body>
</html>

＆＃13;

Answer 1

添加你的urls.py

您在浏览器中使用的是什么网址？

如果可能的话，当你在空白页面按cntrl + u时，添加一些可以让你回浏览器。

我的html文件返回空白页面。怎么解决这个？

1 个答案: