我一直在try 将Python字典发送到HTML页面,并在Javascript中使用该字典,使用Django在我的网站上添加一个图形
表单需要上传图像,代码如下:,
<div class=" mx-5 font-weight-bold">
Uplaod Image
</div>
<input class=" " type="file" name="filePath">
<input type="submit" class="btn btn-success" value="Submit">
然后将该图像发送到views.py
,在那里对其进行处理,并从该图像生成结果图像以及字典.然后再次呈现一个HTML页面,其中字典以及生成的图像在上下文变量中发送.代码如下:,
def predictImage(request):
fileObj = request.FILES['filePath']
fs = FileSystemStorage()
filePathName = fs.save(fileObj.name, fileObj)
filePathName = fs.url(filePathName)
testimage = '.'+filePathName
img_result, resultant_array, total_objects = detect_image(testimage)
cv2.imwrite("media/results/" + fileObj.name, img=img_result)
context = {'filePathName':"media/results/"+fileObj.name, 'predictedLabel': dict(resultant_array), 'total_objects': total_objects}
#context = {}
return render(request, 'index.html', context)
现在,我想将字典项和键转换成两个不同的Javascript数组,然后用它们在HTML页面上绘制一个图形.Javascript的模板代码如下:,
<script>
// const value = JSON.parse(document.getElementById('data_values').textContent);
// alert(value);
var xArray = [];
var yArray = [];
var xArray = ["Italy", "France", "Spain", "USA", "Argentina"]; // xArray needs to have Python Dictionary's keys
var yArray = [55, 49, 44, 24, 15]; // yArray needs to have Python Dictionary's values
var layout = { title: "Distribution of Labels" };
var data = [{ labels: xArray, values: yArray, hole: .5, type: "pie" }];
Plotly.newPlot("myPlot", data, layout);
</script>
我try 了很多不同的方法来访问Javascript脚本中的Python字典,然后将其转换为Javascript数组,但我仍然没有做到这一点.我还try 了不同的Stackoverflow帖子等,但没有什么能真正正确地指导我.我也是Django的新手,所以我对语法也不太了解.