A simple example to show how to manage an history of memo-on-save. Each time the user saves the model, he must provide a memo message. The full memos history is shown as a read-only tabular-inline. For each memo, user and date are also registered
(Django-Admin-Collapsed-Inlines could be usefull)
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# models.py
#############################################################
from django.contrib.auth.models import User
from django.db import models
class Order(models.Model):
""" sample model """
code = models.CharField(max_length=30)
def __unicode__(self):
return self.code
class OrderNote(models.Model):
""" model save registration """
order = models.ForeignKey(Order)
insert_user = models.ForeignKey(User)
insert_date = models.DateTimeField(auto_now=True)
memo = models.TextField()
#############################################################
# admin.py
#############################################################
from django.contrib import admin
from django import forms
from models import *
class OrderNoteInline(admin.TabularInline):
model = OrderNote
readonly_fields = ('memo', 'insert_user', 'insert_date')
extra = 0
def has_delete_permission(self, request, obj=None):
return False
def has_add_permission(self, request, obj=None):
return False
class OrderForm(forms.ModelForm):
memo = forms.CharField(widget=forms.Textarea())
class OrderOption(admin.ModelAdmin):
form = OrderForm
raw_id_fields = ('items', )
inlines = [OrderNoteInline]
def save_model(self, request, obj, form, change):
OrderNote(order=obj, insert_user=request.user, memo=form.cleaned_data['memo']).save()
super(OrderOption, self).save_model(request, obj, form, change)
admin.site.register(Order, OrderOption)
|
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