Django-Chartit2 'dict_keys' object does not support indexing 报错

Question

我正在按照提供的演示示例探索用于图表目的的 Django Chartit2 包 here。我已经创建了自己的数据透视图模型，其中包含以下字段：城市、人员和销售额。

在我看来，我正在通过使用基于销售列聚合的术语来创建数据透视图。

在尝试访问 url 时出现错误：

Exception Type: TypeError at /chart/pivotpool/

Exception Value: 'dict_keys' object does not support indexing

让我知道在指定数据透视图的条款时我遗漏了什么。

class SalesHistory(models.Model):
    city = models.CharField(max_length=50)
    person = models.CharField(max_length=50)
    sales_qty = models.IntegerField()

def some_view(request):
    ds = PivotDataPool(series=[{'options': {'source': SalesHistory.objects.all(), 'categories': ['city']},
    'terms': {'total_sales': Sum('sales_qty')}}])
    pivchrt = PivotChart(datasource=ds, series_options=[{'options': {'type': 'column', 'stacking': True}, 'terms':['total_sales']}], chart_options = {})

我的回溯：

Traceback:
File "/home/sam/Documents/onemoreEnv/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
  149.                     response = self.process_exception_by_middleware(e, request)

File "/home/sam/Documents/onemoreEnv/lib/python3.4/site-packages/django/core/handlers/base.py" in get_response
  147.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/sam/Documents/Lab Projects/djangoChartit/demoChartit/views.py" in some_view
  131.                        'text': 'city'}}})

File "/home/sam/Documents/onemoreEnv/lib/python3.4/site-packages/chartit/charts.py" in __init__
  508.         self.set_default_hcoptions()

File "/home/sam/Documents/onemoreEnv/lib/python3.4/site-packages/chartit/charts.py" in set_default_hcoptions
  533.         categories = dss[terms[0]]['categories']

Answer 1

chartit charts.py 文件中 set_default_hcoptions 函数中使用的术语没有属性索引，这就是它给我错误的原因。我已经评论了它被初始化的行，即

# terms = self.series_options.keys()

并添加了我自己的版本：

terms = list(self.series_options)

它对我有用。

Django-Chartit2 'dict_keys' object does not support indexing 报错

Django-Chartit2 'dict_keys' object does not support indexing error

django

pivot-table

pivot-chart