如何在用字典列表而不是查询集填充 django-tables2 后过滤它？

如何解决如何在用字典列表而不是查询集填充 django-tables2 后过滤它？

我有一个从 MongoDB 获取的字典列表。然后我在 views.py 中填充 django-tables2 表并在我的模板 index.html

中呈现它

在views.py

from django.shortcuts import render

from .tables import generateTable
from django_tables2 import RequestConfig

import pymongo
import pandas as pd
import json

client = pymongo.MongoClient("<mongodb url>")
db = client["stocks"]
col = db["company_stocks"]
the_rows = col.find({},{'_id': False})

pandas_dataframe = pd.DataFrame(list(the_rows),columns=['Date','Open','High','Low','Close','Volume','Name'])

json_fomatted = pandas_dataframe.to_json(orient='records')

data = []
data = json.loads(json_fomatted)

def index(request):
    table = generateTable(data)
    RequestConfig(request).configure(table)

    context = {'stocks_table': table }

    return render(request,"home_app/index.html",context)

tables.py

import django_tables2 as tables
from .models import Stocks

class generateTable(tables.Table):
    Date = tables.Column()
    Open = tables.Column()
    High = tables.Column()
    Low = tables.Column()
    Close = tables.Column()
    Volume = tables.Column()
    Name = tables.Column()

urls.py

urlpatterns = [
    # Uncomment the next line to enable the admin:
    path('admin/',admin.site.urls),url(r'^$',home_app.views.index,name='index'),url(r'^home$',name='home'),]

index.html

{% load render_table from django_tables2 %}
{% render_table stocks_table 'django_tables2/bootstrap.html' %}

Result is this

现在我正在尝试使用 django-filter 过滤表格，但运气不佳

我发现的是如何过滤用查询集而不是字典列表填充的数据

我的过滤尝试：

views.py

...
from .models import Stocks
...

def index(request):
    table = generateTable(data)
    RequestConfig(request).configure(table)

    #with this line
    myFilter = stockFilter(request.GET,queryset=Stocks.objects.all())

    context = {'stocks_table': table,'myFilter': myFilter }

    return render(request,context)

filters.py

import django_filters

from .models import Stocks

class stockFilter(django_filters.FilterSet):
    class Meta:
        model = Stocks
        fields = '__all__'

models.py

from django.db import models

class Stocks(models.Model):
    open = models.IntegerField(
        max_length = 128)
    high = models.IntegerField(
        max_length = 128)
    low = models.IntegerField(
        max_length = 128)
    close = models.IntegerField(
        max_length = 128)
    volume = models.IntegerField(
        max_length = 128)
    name = models.CharField(
        max_length = 128)

index.html

<form method="GET">
   {{ myFilter.form }}
   <input type="submit" />
</form>
{% load render_table from django_tables2 %}
{% render_table stocks_table 'django_tables2/bootstrap.html' %}

这是result

然后filtering...

我认为问题在于我的表填充的是列表而不是查询集。

有没有更好的过滤django-tables2的方法？

非常感谢任何帮助！

我找到了一个 similar question posted，但它的表使用了多个模型

解决方法

我最终做的是从 mongo 获取所需的文档后，我创建了一个模型对象 Stocks 并将其附加到列表中，然后简单地执行 bulk_create(创建列表)

views.py

the_rows = col.find({},{'_id': False})

json_data = list(the_rows)
    
obj_list = []
for data in json_data:
    _open = round(float(data['Open']),2)
    _high = round(float(data['High']),2)
    _low = round(float(data['Low']),2)
    _close = round(float(data['Close']),2)

    obj = Stocks(name=data['Name'],date=data['Date'],open=_open,high=_high,low=_low,close=_close,volume=data['Volume'])

    obj_list.append(obj)

Stocks.objects.bulk_create(obj_list)

tables.py 基于 models.py

import django_tables2 as tables
from .models import Stocks

class generateTable(tables.Table):
    class Meta:
        model = Stocks;
        template = 'django_tables2/bootstrap.html';

然后为了创建表和过滤器，我按照我找到的步骤 here

views.py

qs = Stocks.objects.all()

myFilter = stockFilter(request.GET,queryset=qs)

table = generateTable(myFilter.qs)
RequestConfig(request,paginate={"per_page": 30}).configure(table)

return render(request,"home_app/index.html",{ 'stocks_table': table,'myFilter': myFilter })

最后是模板index.html

{% block content %}
{% load render_table from django_tables2 %}
<div class="row">
    <div class="filter_column">
        <form>
            {{myFilter.form}}
            <input type="submit" />
        </form>
    </div>
    <div class="table_column">
        {% render_table stocks_table %}
    </div>
</div>

{% endblock %}

Result