创建与外键字段相关的2个Django模型的Excel报告

问题描述 投票：0回答：1

我有两个这样的模型：

class NominaEnc(models.Model):
    G1 = "PERSONAL"
    G2 = "SUPERVISOR"
    G3 ="AUXILIAR"

    GRUPO_CHOICES = (
        (G1, 'PERSONAL'),
        (G2, 'SUPERVISOR'),
        (G3, 'AUXILIAR'),
    )

    fecha_nomina= models.DateField()
    planta =models.ForeignKey(PlantaNomina,to_field='descripcion_planta',on_delete=models.CASCADE)
    area=models.ForeignKey(AreaNomina, on_delete=models.CASCADE, to_field='descripcion_area')
    linea =models.ForeignKey(lineaNomina, on_delete=models.CASCADE, to_field='descripcion_linea')
    grupo=models.CharField(choices=GRUPO_CHOICES, max_length=30, blank=True, null =True)
    supervisor=models.ForeignKey(SupervisorNomina, on_delete=models.CASCADE, 
        to_field='nombre_supervisor')
    semana = models.IntegerField(default=1 )
    plantilla = models.IntegerField(default=0)

    def __str__(self):
        return'{} {} {} {} {}'.format(self.semana, self.area, self.linea, self.grupo, 
        self.supervisor)

    class Meta:
        verbose_name_plural ="Encabezados Nomina"
        verbose_name = "Encabezado Nomina"

class NominaDet(models.Model):

    nomina = models.ForeignKey(NominaEnc, related_name='detalles' ,on_delete=models.CASCADE)
    concepto=models.ForeignKey(ConceptoNomina, on_delete=models.CASCADE, to_field='concepto')
    cantidad =models.FloatField(default=0.0)


    def __str__(self):
        return "{} {}".format(self.nomina,self.concepto)


    class Meta:
        verbose_name_plural ="Detalles Nomina"
        verbose_name = "Detalle Nomina"

我的观点是：

class NominaList( generic.ListView):
    model=NominaEnc
    template_name='nomina/nomina_list.html'
    context_object_name='nomina'

class NominaCompletaList(generic.ListView):
    template_name='nomina/nomina_completa.html'
     context_object_name='nomina'
    queryset = NominaEnc.objects.all()

    def get_context_data(self, **kwargs):
        context = super(NominaCompletaList, self).get_context_data(**kwargs)
        context['detalles'] = NominaDet.objects.all()
        context['encabezado'] = self.queryset
        return context

和网址是：

urlpatterns = [
path('nomina/', NominaList.as_view(), name="nomina_list"),
path('nomina_completa/', NominaCompletaList.as_view(), name="nomina_completa")
]

我想创建一个显示两个模型数据的XLSX文件（Excel）。我已经完成了NominaEnc模型（父模型）的工作，但是我无法将NominaEnc和NominaDet模型的数据结合起来。

为了创建报告，我这样做是这样的：

from django.shortcuts import render

from django.contrib.auth.mixins import LoginRequiredMixin
from django.views .generic.base import TemplateView
from django.http.response import HttpResponse
from openpyxl import Workbook
from openpyxl.styles import Alignment, Border,Font,PatternFill,Side

from django.views import generic
from django.urls import reverse_lazy

from .models import NominaEnc, NominaDet

class ReporteNomina(TemplateView):
def get (self, request, *args, **kwargs):

    query = NominaEnc.objects.all()
    wb = Workbook()

    ws = wb.active
    ws.tittle='Nomina'


    #Establer el nombre del archivo
    nombre_archivo = "Reporte Nomina.xlsx"
    ws['B1'].alignment= Alignment(horizontal='left', vertical='center')
    ws['B1'].border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                        top=Side(border_style='thin'), bottom=Side(border_style='thin'))

    ws['B1'].fill = PatternFill(start_color='66FFCC', end_color='66FFCC', fill_type='solid')
    ws['B1'].font = Font(name='calibri', size=12, bold=True)
    ws['B1']='Company'

    ws.merge_cells('B1:F1')

    ws['B2'].alignment= Alignment(horizontal='left', vertical='center')
    ws['B2'].border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                        top=Side(border_style='thin'), bottom=Side(border_style='thin'))

    ws['B2'].fill = PatternFill(start_color='66FFCC', end_color='66FFCC', fill_type='solid')
    ws['B2'].font = Font(name='calibri', size=12, bold=True)
    ws['B2']='Department'

    ws.merge_cells('B2:F2')
    ws['B3'].alignment= Alignment(horizontal='left', vertical='center')
    ws['B3'].border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                        top=Side(border_style='thin'), bottom=Side(border_style='thin'))

    ws['B3'].fill = PatternFill(start_color='66FFCC', end_color='66FFCC', fill_type='solid')
    ws['B3'].font = Font(name='calibri', size=12, bold=True)
    ws['B3']='Reporte de Nomina'

    ws.merge_cells('B3:F3')

    ws.row_dimensions[1].height=20
    ws.row_dimensions[2].height=20
    ws.row_dimensions[3].height=20

    ws.column_dimensions['B'].width=20
    ws.column_dimensions['C'].width=20
    ws.column_dimensions['D'].width=20
    ws.column_dimensions['E'].width=20


    ws['B6'].alignment= Alignment(horizontal='center', vertical='center')
    ws['B6'].border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                        top=Side(border_style='thin'), bottom=Side(border_style='thin'))
    ws['B6'].fill = PatternFill(start_color='66CFCC', end_color='66CFCC', fill_type='solid')
    ws['B6'].font = Font(name='calibri', size=11, bold=True)
    ws['B6']='Semana'


    ws['C6'].alignment= Alignment(horizontal='center', vertical='center')
    ws['C6'].border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                        top=Side(border_style='thin'), bottom=Side(border_style='thin'))
    ws['C6'].fill = PatternFill(start_color='66CFCC', end_color='66CFCC', fill_type='solid')
    ws['C6'].font = Font(name='calibri', size=11, bold=True)
    ws['C6']='Area'

    controlador = 7
    for q in query:
        ws.cell(row=controlador,column=2).alignment= Alignment(horizontal='center', vertical='center')
        ws.cell(row=controlador,column=2).border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                            top=Side(border_style='thin'), bottom=Side(border_style='thin'))
        ws.cell(row=controlador,column=2).fill = PatternFill(start_color='66CFCC', end_color='66CFCC', fill_type='solid')
        ws.cell(row=controlador,column=2).font = Font(name='calibri', size=11, bold=True)
        ws.cell(row=controlador,column=2).value=q.semana

        ws.cell(row=controlador,column=3).alignment= Alignment(horizontal='center', vertical='center')
        ws.cell(row=controlador,column=3).border =Border(left=Side(border_style='thin'),right=Side(border_style='thin'),
                            top=Side(border_style='thin'), bottom=Side(border_style='thin'))
        ws.cell(row=controlador,column=3).fill = PatternFill(start_color='66CFCC', end_color='66CFCC', fill_type='solid')
        ws.cell(row=controlador,column=3).font = Font(name='calibri', size=11, bold=True)
        ws.cell(row=controlador,column=3).value=q.area

        #contador+=1
        controlador +=1

    response = HttpResponse(content_type='application/ms-excel')
    contenido = "attachment; filename = {0}".format(nombre_archivo)
    response["Content-Disposition"] = contenido
    wb.save(response)
    return response

问题是如何在NominaDet模型的字段名称中定义将两个模型的数据连接起来的查询？

python-3.x django-models foreign-keys openpyxl
1个回答
0
投票

您应该使用NominaEnc对象示例

nom = NominaEnc.objects.first()

nom.detalles.all()

或类似.first(), .filter()等...

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