06 – CUSTOMIZE DJANGO ADMIN INTERFACE – INVOICE MANAGEMENT SYSTEM

1. Create forms.py module in invoicemgmt app folder

2. In the forms.py module, import Django model form
from django import forms
In the same form.py module, import the Invoice model from models.py
from .models import Invoice

3. Create a model form in forms.py. Name the form InvoiceForm as shown below

class InvoiceForm(forms.ModelForm):
	class Meta:
		model = Invoice
		fields = ['name', 'phone_number', 'invoice_date',
				'line_one', 'line_one_quantity', 'line_one_unit_price', 'line_one_total_price',
				'line_two', 'line_two_quantity', 'line_two_unit_price', 'line_two_total_price',
				'line_three', 'line_three_quantity', 'line_three_unit_price', 'line_three_total_price',
				'line_four', 'line_four_quantity', 'line_four_unit_price', 'line_four_total_price',
				'line_five', 'line_five_quantity', 'line_five_unit_price', 'line_five_total_price', 
				'total', 'paid', 'invoice_type'
				]

4. In admin.py, import the InvoiceForm created in step 3 above
from .forms import InvoiceForm

Next, create a class, name it InvoiceAdmin, with list_display, form, list_filter, and search_field as shown below.

class InvoiceAdmin(admin.ModelAdmin):
   list_display = ['name', 'invoice_number', 'invoice_date']
   form = InvoiceForm
   list_filter = ['name']
   search_fields = ['name', 'invoice_number']

5. Modify your registration to apply the customization as below.

admin.site.register(Invoice, InvoiceAdmin)