Javascript 一个图表不能显示数据
此图表正确显示如下内容: 但这一条不显示条形图: 它将此行显示为不正确,其中default2为: 未解析变量default2 编辑 我已经在下面对您进行了注释,以便您查看,并添加了一张显示此错误的图片: 编辑 如何使上面的图表与另一个图表一样显示条形图? 已经做了好几天好几个小时了,在这里寻找答案,但运气不好。希望你能看到我哪里出错了 新手,谢谢你们的帮助,伙计们 编辑 编辑 chart.jsJavascript 一个图表不能显示数据,javascript,ajax,django,python-3.x,chart.js,Javascript,Ajax,Django,Python 3.x,Chart.js,此图表正确显示如下内容: 但这一条不显示条形图: 它将此行显示为不正确,其中default2为: 未解析变量default2 编辑 我已经在下面对您进行了注释,以便您查看,并添加了一张显示此错误的图片: 编辑 如何使上面的图表与另一个图表一样显示条形图? 已经做了好几天好几个小时了,在这里寻找答案,但运气不好。希望你能看到我哪里出错了 新手,谢谢你们的帮助,伙计们 编辑 编辑 chart.js var endpoint = '/api/chart/data/'; var defaultD
var endpoint = '/api/chart/data/';
var defaultData = [];
var labels = [];
var defaultData2 = [];
var labels2 = [];
$.ajax({
method: "GET",
url: endpoint,
success: function (data) {
labels = data.labels;
defaultData = data.default;
setChart()
},
error: function (error_data) {
console.log("error");
console.log(error_data)
}
});
$.ajax({
method: "GET",
url: endpoint,
success: function (data) {
labels2 = data.labels2;
defaultData2 = data.default2; # default2 displays error/as incorrect???
setChart2()
},
error: function (error_data) {
console.log("error");
console.log(error_data)
}
});
function setChart2(){
var ctx = document.getElementById("myChart5");
var myChart5 = new Chart(ctx, {
type: 'bar',
data: {
labels2: labels2,
datasets: [{
label: 'Total',
data: defaultData2,
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero:true,
callback: function(value) {if (value % 1 === 0) {return value;}}
}
}]
}
}
});}
function setChart(){
var ctx = document.getElementById("myChart1");
var myChart1 = new Chart(ctx, {
type: 'bar',
data: {
labels: labels,
datasets: [{
label: 'Total',
data: defaultData,
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
scales: {
yAxes: [{
ticks: {
beginAtZero:true,
callback: function(value) {if (value % 1 === 0) {return value;}}
}
}]
}
}
});
views.py
from django.shortcuts import render
from django.views.generic import View
from django.http import JsonResponse
from django.contrib.auth import get_user_model
from SiO.member.models import Member
from SiO.CoAdmin.models import Administrator
from rest_framework.views import APIView
from rest_framework.response import Response
import datetime
User = get_user_model()
class ChartView(View):
def get(self, request, *args, **kwargs):
return render(request, 'chart/ChartView.html', {})
class ChartViewMonth(View):
def get(self, request, *args, **kwargs):
return render(request, 'chart/ChartView/month.html', {})
class ChartData(APIView):
def get(self, request, format=None):
today = datetime.date.today()
qs_count = Administrator.objects.filter(association=self.request.user.association).count()
qs_count1 = Member.objects.filter(association=self.request.user.association).count()
qs_count2 = Member.objects.filter(reg_date__year=today.year,
reg_date__month=today.month).filter(
association=self.request.user.association).count()
labels2 = ["January"]
default_items2 = [qs_count2, ]
labels = ["Board", "Members"]
default_items = [qs_count, qs_count1]
data = {
"labels": labels,
"default": default_items,
"labels2": labels2,
"default2": default_items2,
}
return Response(data)
url.py
from django.conf.urls import url
from . import views
from django.contrib.auth import get_user_model
User = get_user_model()
urlpatterns = [
url(r'^ChartView/$', views.ChartView.as_view(), name='ChartView'),
url(r'^ChartView/month$', views.ChartViewMonth.as_view(), name='ChartView/month'),
url(r'^api/chart/data/$', views.ChartData.as_view()),
]
您确定
data
对象具有属性default2
?@Oen44-您的意思是在客户端(javascript)或后端(python)上吗?控制台在success
回调中记录data
,并检查是否存在default2
@Oen44-是的。以图像形式查看上面的输出。如果控制台中没有错误,则说明您正在使用的是IDE。