Jquery 如何成功地传递Json以在Django中呈现和操作它?
我试图从POST请求返回Json响应,但在路径中遇到了各种错误 首先,我有以下看法Jquery 如何成功地传递Json以在Django中呈现和操作它?,jquery,json,ajax,django,python-3.x,Jquery,Json,Ajax,Django,Python 3.x,我试图从POST请求返回Json响应,但在路径中遇到了各种错误 首先,我有以下看法 class ChartData8(APIView): def tickets_per_day_results(request): if request.method == "POST": template_name = 'personal_website/tickets_per_day_results.html' year = request
class ChartData8(APIView):
def tickets_per_day_results(request):
if request.method == "POST":
template_name = 'personal_website/tickets_per_day_results.html'
year = request.POST.get('select_year', None)
week = request.POST.get('select_week', None)
....do stuff...
data = {"label_number_days": label_number_days,
"days_of_data": count_of_days}
return render(request,template_name,JsonResponse(data))
调用包含Ajax请求的模板tickets\u per\u day\u results.html:
$.ajax({
method: "POST",
url: endpoint,
dataType: 'json',
contentType: "application/json",
headers: {"X-CSRFToken": $.cookie("csrftoken")},
success: function(data){
console.log(data)
label_number_days = data.label_number_days
days_of_data = data.days_of_data
setChart()
},
error: function(jqXHR,error_data, errorThrown){
console.log("error on data")
console.log(error_data)
console.log(JSON.stringify(jqXHR))
console.log("AJAX error: " + error_data + ' : ' + errorThrown)
}
但这种组合使我联想到上下文必须是dict而不是JsonResponse
错误
我尝试了多种选择:
备选方案1:我使用了Response
而不是JsonResponse
,如下所示:
class ChartData8(APIView):
def tickets_per_day_results(request):
if request.method == "POST":
template_name = 'personal_website/tickets_per_day_results.html'
year = request.POST.get('select_year', None)
week = request.POST.get('select_week', None)
....do stuff...
data = {"label_number_days": label_number_days,
"days_of_data": count_of_days}
return render(request,template_name,Response(data))
class ChartData8(APIView):
def tickets_per_day_results(request):
if request.method == "POST":
template_name = 'personal_website/tickets_per_day_results.html'
year = request.POST.get('select_year', None)
week = request.POST.get('select_week', None)
....do stuff...
data = {"label_number_days": label_number_days,
"days_of_data": count_of_days}
return render(request,template_name, dict(Response(data)))
但这抛出了错误上下文必须是dict而不是Response
备选方案2:我尝试将对象转换为dict,而不是JsonResponse
和Response
,如下所示:
class ChartData8(APIView):
def tickets_per_day_results(request):
if request.method == "POST":
template_name = 'personal_website/tickets_per_day_results.html'
year = request.POST.get('select_year', None)
week = request.POST.get('select_week', None)
....do stuff...
data = {"label_number_days": label_number_days,
"days_of_data": count_of_days}
return render(request,template_name,Response(data))
class ChartData8(APIView):
def tickets_per_day_results(request):
if request.method == "POST":
template_name = 'personal_website/tickets_per_day_results.html'
year = request.POST.get('select_year', None)
week = request.POST.get('select_week', None)
....do stuff...
data = {"label_number_days": label_number_days,
"days_of_data": count_of_days}
return render(request,template_name, dict(Response(data)))
但是这抛出了一个错误,必须先呈现响应内容,然后才能对其进行迭代
备选方案3:我尝试在没有JsonResponse
或Response
的情况下传递数据,而不是1和2:
class ChartData8(APIView):
def tickets_per_day_results(request):
if request.method == "POST":
template_name = 'personal_website/tickets_per_day_results.html'
year = request.POST.get('select_year', None)
week = request.POST.get('select_week', None)
....do stuff...
data = {"label_number_days": label_number_days,
"days_of_data": count_of_days}
return render(request,template_name, data)
但是这抛出了ajax请求中的错误parserror
,因为这意味着您只需返回一个字符串或另一个值,它实际上不是Json
,因此解析器在解析它时失败。您可以通过从Ajax请求(解决方案)中删除数据类型:'json'
来避免此错误,但这将不允许我从模板每天的票证结果中操作数据集,即
删除dataType:json
$.ajax({
method: "POST",
url: endpoint,
headers: {"X-CSRFToken": $.cookie("csrftoken")},
success: function(data){
console.log(data)
label_number_days = data.label_number_days
days_of_data = data.days_of_data
setChart()
},
error: function(jqXHR,error_data, errorThrown){
console.log("error on data")
console.log(error_data)
console.log(JSON.stringify(jqXHR))
console.log("AJAX error: " + error_data + ' : ' + errorThrown)
}
那么我就无法操作Ajax请求下面的数据集:
data: {
labels: label_number_days,
datasets :
[{
label: 'User_001',
data [days_of_data[0],days_of_data[1],days_of_data[2],days_of_data[3],days_of_data[4],days_of_data[5],days_of_data[6]],
backgroundColor: 'rgba(255, 99, 132, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
因为您发现未捕获类型错误:无法读取未定义的的属性“0”
这是一条乏味的道路,我的想法(和耐心)都快用完了。如果有人能建议我其他的选择,那将给我一些健康上的安慰
更新
每日门票结果html文件
{% extends "personal_website/header.html"%}
<script>
{% block jquery %}
var endpoint = '/tickets_per_day_results/' //This works with the chart_data view.
var days_of_data = []
var label_number_days = []
$.ajax({
method: "POST",
url: endpoint,
dataType: 'json',
contentType: "application/json",
headers: {"X-CSRFToken": $.cookie("csrftoken")},
success: function(data){
console.log(data)
label_number_days = data.label_number_days
days_of_data = data.days_of_data
setChart()
},
error: function(jqXHR,error_data, errorThrown){
console.log("error on data")
console.log(error_data)
console.log(JSON.stringify(jqXHR))
console.log("AJAX error: " + error_data + ' : ' + errorThrown)
}
})
function setChart()
{var ctx_tickets_per_day = document.getElementById("tickets_per_day")
var tickets_per_day = new Chart(ctx_tickets_per_day, {
showTooltips: false,
type:'bar',
data: {
labels: label_number_days,
datasets :
[{
label: 'Oscar Gil',
data: [days_of_data[0],days_of_data[1],days_of_data[2],days_of_data[3],days_of_data[4],days_of_data[5],days_of_data[6]],
backgroundColor: 'rgba(255, 99, 132, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Oscar Rodriguez',
data: [days_of_data[7],days_of_data[8],days_of_data[9],days_of_data[10],days_of_data[11],days_of_data[12],days_of_data[13]],
backgroundColor: 'rgba(54, 162, 235, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Animesh Rathore',
data: [days_of_data[14],days_of_data[15],days_of_data[16],days_of_data[17],days_of_data[18],days_of_data[19],days_of_data[20]],
backgroundColor: 'rgba(255, 206, 86, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Bhaskar Sharma',
data: [days_of_data[21],days_of_data[22],days_of_data[23],days_of_data[24],days_of_data[25],days_of_data[26],days_of_data[27]],
backgroundColor: 'rgba(75, 192, 192, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Victor Catacora',
data: [days_of_data[28],days_of_data[29],days_of_data[30],days_of_data[31],days_of_data[32],days_of_data[33],days_of_data[34]],
backgroundColor: 'rgba(153, 102, 255, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Jimmy Gonzalez',
data: [days_of_data[35],days_of_data[36],days_of_data[37],days_of_data[38],days_of_data[39],days_of_data[40],days_of_data[41]],
backgroundColor: 'rgba(236, 115, 9, 1)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Piyush Gupta',
data: [days_of_data[42],days_of_data[43],days_of_data[44],days_of_data[45],days_of_data[46],days_of_data[47],days_of_data[48]],
backgroundColor: 'rgba(185, 29, 12, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Carlos Prieto',
data: [days_of_data[49],days_of_data[50],days_of_data[51],days_of_data[52],days_of_data[53],days_of_data[54],days_of_data[55]],
backgroundColor: 'rgba(105, 129, 64, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
{
label: 'Daniel Estrada',
data: [days_of_data[56],days_of_data[57],days_of_data[58],days_of_data[59],days_of_data[60],days_of_data[61],days_of_data[62]],
backgroundColor: 'rgba(15, 199, 84, 0.6)',
borderColor: '#777',
borderWidth: 1,
hoverBorderWidth: 3,
hoverBorderColor: '#000'
},
]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero: true
}
}]
},
title: {
display: true,
text: 'Tickets by engineer per day',
fontSize: 30
},
legend: {
position: 'right',
display: true,
labels: {
fontColor: '#000'
}
},
layout: {
padding: {
left: 50,
right: 0,
bottom: 0,
top: 0
}
},
tooltips: {
enabled: true
},
hover : {
animationDuration: 0
},
animation: {
duration: 0.8,
onComplete: function(){
var chartInstance = this.chart,
ctx = chartInstance.ctx;
Chart.defaults.global.defaultFontColor = '#777';
ctx.font = Chart.helpers.fontString(Chart.defaults.global.defaultFontSize,
Chart.defaults.global.defaultFontStyle, Chart.defaults.global.defaultFontFamily);
ctx.textAlign = 'center';
ctx.textBaseline = 'bottom';
this.data.datasets.forEach(function (dataset, i) {
var isHidden = dataset._meta[0].hidden; //'hidden' property of dataset
if (!isHidden) { //if dataset is not hidden
var meta = chartInstance.controller.getDatasetMeta(i);
meta.data.forEach(function (bar, index) {
var data = dataset.data[index];
ctx.fillText(data, bar._model.x, bar._model.y - 5);});
}});
}
}
}
})
}
{% endblock %}
{%extends“personal_website/header.html”%}
{%block jquery%}
var endpoint='/tickets\u per\u day\u results/'//这适用于图表数据视图。
风险值天数(单位数据)=[]
var标签\u编号\u天数=[]
$.ajax({
方法:“张贴”,
url:endpoint,
数据类型:“json”,
contentType:“应用程序/json”,
标题:{“X-CSRFToken”:.cookie(“CSRFToken”)},
成功:功能(数据){
console.log(数据)
label\u number\u days=data.label\u number\u days
数据的天数=数据。数据的天数
设定图()
},
错误:函数(jqXHR、错误数据、错误抛出){
console.log(“数据错误”)
console.log(错误\u数据)
log(JSON.stringify(jqXHR))
log(“AJAX错误:+error\u data+:”+errorshown)
}
})
函数集图表()
{var ctx_tickets_per_day=document.getElementById(“tickets_per_day”)
var tickets_per_day=新图表(ctx_tickets_per_day{
showTooltips:false,
类型:'bar',
数据:{
标签:标签天数,
数据集:
[{
标签:“奥斯卡·吉尔”,
数据:[数据天数[0]、数据天数[1]、数据天数[2]、数据天数[3]、数据天数[4]、数据天数[5]、数据天数[6],
背景颜色:“rgba(255,99,132,0.6)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”
},
{
标签:“奥斯卡·罗德里格斯”,
数据:[数据天数[7]、数据天数[8]、数据天数[9]、数据天数[10]、数据天数[11]、数据天数[12]、数据天数[13],
背景颜色:“rgba(54162235,0.6)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”
},
{
标签:“Animesh Rathore”,
数据:[数据天数[14]、数据天数[15]、数据天数[16]、数据天数[17]、数据天数[18]、数据天数[19]、数据天数[20],
背景颜色:“rgba(255206860.6)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”
},
{
标签:“Bhaskar Sharma”,
数据:[数据天数[21]、数据天数[22]、数据天数[23]、数据天数[24]、数据天数[25]、数据天数[26]、数据天数[27],
背景颜色:“rgba(751921920.6)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”
},
{
标签:“维克多·卡塔科拉”,
数据:[数据天数[28]、数据天数[29]、数据天数[30]、数据天数[31]、数据天数[32]、数据天数[33]、数据天数[34],
背景颜色:“rgba(153102255,0.6)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”
},
{
标签:“吉米·冈萨雷斯”,
数据:[数据天数[35]、数据天数[36]、数据天数[37]、数据天数[38]、数据天数[39]、数据天数[40]、数据天数[41],
背景颜色:“rgba(236115,9,1)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”
},
{
标签:“Piyush Gupta”,
数据:[数据天数[42],数据天数[43],数据天数[44],数据天数[45],数据天数[46],数据天数[47],数据天数[48],
背景颜色:“rgba(185,29,12,0.6)”,
边框颜色:'#777',
边框宽度:1,
悬停边界宽度:3,
悬停边框颜色:“#000”