post save signal inline admin

[Ali Rıza KELEŞ]

Hi,

I have problem with post save signal.

Lets say we have two models Authors and Books. Authors model has a
post save signal: NotifyAuthor

When I save model Book with inline Author, Author's post save signal
does not work. If I save model Author via its own form, the signal
works properly.

Is there any quick / easy fix?

Thanks.

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Re: Post-save hook after inline records saved?

[Vinicius Massuchetto]

On Feb 3 2010, 8:52 pm, Andy Robinson <captainro...@gmail.com> wrote:
> I'm writing a bookkeeping system using Django latest code.   I would
> like to make sure that when certain records are saved, changes are
> made to other records.    For example, when I save a Sale model in the
> admin - or programmatic code - it may create (or update) a bunch of
> records in the general ledger tables.  Overriding the model.save()
> method worked well up to a point.
>
> I have one model that uses inlines in a master-detail relationship.
> Think of Orders, and Lines within them.  I enter an Order with 3
> Lines.  Unfortunately, overriding Order.save() doesn't work, because
> when the save event fires, none of the lines have been saved or hooked
> up to it yet.     post-save signals are no better.
>
> (Ugly workaround in admin:  hit 'save and continue editing', then hit
> 'save'.  The second time I save, the order rows exist)
>
> Can anyone suggest a strategy whereby, when an Order gets saved, I can
> hook into some event AFTER the related Lines have been saved?

Hi Andy.

Did you find a workaround for this? Or can anyone suggest something
now?

Thanks
Vinicius Massuchetto

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Re: Post Save

[Daniel Corbe]

Thanks  already solved

i use post_save for child class and works for me!


On 1 August 2011 14:55, bruno desthuilliers
wrote:

> On 1 août, 19:17, Daniel Corbe  wrote:
> > Ok, halfly solved.
>
> What ?
>
> > The problem
>
> Which problem ?
>
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>


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dan...@corbe.com.br
55 48 9618-5115
skype: daniel_corbe

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Re: Post Save

[bruno desthuilliers]

On 1 août, 19:17, Daniel Corbe  wrote:
> Ok, halfly solved.

What ?

> The problem

Which problem ?

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Post Save

[Daniel Corbe]

Ok, halfly solved.
The problem is that post_save() for parent model doesn't calling for childs
models.
So you can solve it by providing child class directly.

class Advertisement(models.Model):
created_at = models.DateTimeField(auto_now_add=True)
author_email = models.EmailField()

class Sale(Advertisement):
rooms = models.IntegerField(max_length=1)
subway = models.ForeignKey(Subway)

class Verification(models.Model):
advertisement = models.ForeignKeyField(Advertisement)
key = models.CharField(max_length=32)

def gen_key(sender, instance, created, **kwargs):
code goes here
post_save.connect(gen_key, sender=Sale, dispatch_uid="my_unique_identifier")

*So next question is "How can I use parent class for post_save()?"*

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skype: daniel_corbe

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Post-save hook after inline records saved?

[Andy Robinson]

I'm writing a bookkeeping system using Django latest code.   I would
like to make sure that when certain records are saved, changes are
made to other records.For example, when I save a Sale model in the
admin - or programmatic code - it may create (or update) a bunch of
records in the general ledger tables.  Overriding the model.save()
method worked well up to a point.

I have one model that uses inlines in a master-detail relationship.
Think of Orders, and Lines within them.  I enter an Order with 3
Lines.  Unfortunately, overriding Order.save() doesn't work, because
when the save event fires, none of the lines have been saved or hooked
up to it yet. post-save signals are no better.

(Ugly workaround in admin:  hit 'save and continue editing', then hit
'save'.  The second time I save, the order rows exist)

Can anyone suggest a strategy whereby, when an Order gets saved, I can
hook into some event AFTER the related Lines have been saved?



Thanks,

Andy




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0.96 admin inline - post-save on saved related items

[Earthtalker]

Hello -

I have a model called Category with a related model called Photos
pointing to it, and edited inline in the admin.
I have some processing I want to do after changes are saved for
Category and its related Photos items, but adding this code after super
(Category, self).save() doesn't seem to be working... I have to SAVE
AND CONTINUE EDITING, then SAVE again... I have tried accessing these
items as self.photos_set.all(), and as Photos.objects.filter
(category=self)... but nothing seems to work.

When are these related records saved in the admin as inline edited
items? How cat I get there?

Thanks very much... cheers!
- Thomas

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Re: Post Save Signal the best plan?

[Alex Gaynor]

On Wed, Mar 11, 2009 at 4:47 AM, Alfonso <allanhender...@gmail.com> wrote:

>
> Hi there,
>
> I've got a few tax calculations running on a custom save method within
> admin which work great but I need to build in the option to override
> these calculations manually.
>
> So I have 2 questions - is this what I'd use a post save method for
> (would I move the save calculations to a pre-save and add this manual
> override function to save method) and, is there a way to detect a
> manual change to a field in django?  A 'if not changed [manually] then
> do this' kind of concept?
>
> Thanks
> >
>
What I would do is overide save() and add an extra parameter
"dont_calculate" or something that is False by default but that you can pass
in when you don't want the calculations to occur.

Alex

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say it." --Voltaire
"The people's good is the highest law."--Cicero

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Post Save Signal the best plan?

[Alfonso]

Hi there,

I've got a few tax calculations running on a custom save method within
admin which work great but I need to build in the option to override
these calculations manually.

So I have 2 questions - is this what I'd use a post save method for
(would I move the save calculations to a pre-save and add this manual
override function to save method) and, is there a way to detect a
manual change to a field in django?  A 'if not changed [manually] then
do this' kind of concept?

Thanks
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could not do post save functionality

[gganesh]

hi,
The post save functionality is not working fine  for me , please
rectify mu faults ,
i have tried 2 ways to access post save functionality but both failed
( shown below  as no :1 and no: 2 )

i case of no: 1
i got the o/p of line no 12 in the server but after saving ,line no 14
is not displayed in the server

i case of no 2:
i cannot understand whatis going on



from django.db import models
from django.db.models import signals

class Selector(models.Model):
selctor_name = models.CharField(max_length=200)
acct_number =  models.CharField(max_length=200,editable=False)

1.  def save(self):

11  self.acct_number= 'RBSA'
12  print "i have call save method here "
13  super(Selector, self).save()
14  print "i got the id the number is : ",self.id
15  self.acct_number += str(self.id)


2.  def after(instance, created, **kwargs):
   print '%s was just %s' % (instance, created and 'created'
or 'updated')
   print "i'ma inside after method now"
signals.post_save.connect(after, sender=Selector)


Sorry i am new to Django, just few weeks old
i hope i have conveyed my problem in a right way
thanks in advance
ganesh
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Any ideas why this code won't work in a post save signal, but will in the shell?

[tenni]

def post_save_user_handler(sender, **kwargs):
user = kwargs['instance']
if user.is_staff:
# only give add_staffprofile permissions to staff

p_add_perm = Permission.objects.get
(codename='add_staffprofile')
p_change_perm = Permission.objects.get
(codename='change_staffprofile')
try:
user.get_profile() # See if there is a profile already
(raises exception if there isn't)
except:
# user doesn't have a profile, give them add_staffprofile
permissions
if p_add_perm not in user.user_permissions.all():
user.user_permissions.add(p_add_perm)
else:
# user has a profile already, remove add_staffprofile and
add change_staffprofile
if p_add_perm in user.user_permissions.all():
user.user_permissions.remove(p_add_perm)
if p_change_perm not in user.user_permissions.all():
user.user_permissions.add(p_change_perm)
signals.post_save.connect(post_save_user_handler, sender=User) #
Hopefully User is setup by now...

###

I have a new user who is a staff member but doesn't have a profile
yet. Each time the user is edited (saved) I want to check if they are
still staff and if they have a profile created.

If they do, I want to remove their add_staffprofile permission and
give them a change_staffprofile permission instead.

If they don't have a profile, I want to make sure they have an
add_staffprofile permissions.

I can run this from the interactive prompt (python manage.py
runserver) and it works as expected (user gets add_staffprofile
permission). But when I save the user in the admin (as a staff member
without a profile) the permission is never added.

Thanks for any pointers...
Andrew.


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post-save hook in newforms-admin

[Wanrong Lin]

Hi,

I just switched to the newforms-admin branch. After some tweaking, 
things worked fine. But the real reason I switched is because I want to 
use the post-save hook in the new admin application. To be more 
specific, I want to perform some processing on a database entry after it 
is added or changed in the administration web site. I can not do it by 
overriding the "save" method, as it does not work right in the (old) 
admin application when M2M fields are involved. Now, my question is: 
where is this hook? I could not find it anywhere. Can someone show me? 
Thanks a lot.

Wanrong

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Re: Post Save

[Nathaniel Whiteinge]

In the Django world (and the newspaper world), the canonical term for
what you're looking for is 'slug' and Django even has a built-in slug
model field [1].

If you're just using the built-in Admin, then it even has JavaScript
that will create the slug based on another model field.

However, if you need this functionality outside the Admin there are a
few options open to you:

The method defined in your model class that you were trying to recall
is documented at the bottom of the Model API docs [2]. This is an
excellent place to put this kind of functionality (you can even reuse
Django's built-in slugify functionality [3][4] that the Admin uses).
In fact, this is a fairly common use-case, you can browse how other
people have tried to solve this same problem by looking over the slug
tag on Django Snippets [5].

.. [1] http://www.djangoproject.com/documentation/model-api/#slugfield
.. [2] 
http://www.djangoproject.com/documentation/model-api/#overriding-default-model-methods
.. [3] http://www.djangoproject.com/documentation/templates/#slugify
.. [4] http://www.djangosnippets.org/snippets/43/
.. [5] http://www.djangosnippets.org/tags/slug/

Good luck! Let us know if you have further questions.
- whiteinge
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Post Save

[Chris]

I have a weblog that I am creating and it has a table with fields
called title and url_name.  I would like to make it possible for the
user to simply enter the title of the blog and then django would auto
format the url_name for me based off of the title. ex. - title = My
First Blog -->gets translated to --> url_name = my_first_blog.  I
recall something called _post_save(self): which is defined in your
models class but I am not sure how that would work for what I am
doing.  Anyone have any suggestions? or better way of doing this?


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Pre/Post Save: Assigning a value to the attribute of a object???

[[EMAIL PROTECTED]]

Hi All,

I have a model something like this:

doctype_choices = (
('PDF','Adobe PDF'),
('WORD','Microsoft Word' ),
('EXCEL','Microsoft EXCEL'),

 )

sector_choices = (
('All','All'),
('Social Recovery','Social Recovery'),
('Physical Infrastructure','Physical Infrastructure'),
('Economic Recovery','Economic Recovery'),
('Finance and Administration','Finance and Administration'),
('Projects','Projects'),

)

class Document(meta.Model):
title = meta.CharField(maxlength=200)
description = meta.CharField(maxlength=300)
sector = meta.CharField(maxlength=200,choices=sector_choices)
document= meta.FileField(upload_to = "docs")
document_date = meta.DateField()
doctype = meta.CharField(maxlength=5,choices=doctype_choices)
docsize = meta.CharField(maxlength=10)



All I want to do is the get the size of a document ( stat/getsize()
whatever ) and save it as docsize in my database when the document is
saved in Admin.

Not sure how the pre_save() works, but I imagine that a post_save() may
do it?( not many practical examples of these in the tutorials though)

I must be missing something, but I am not seeing how this can be done
and I cannot recall seeing many examples of assigning a value to an
attribute of an object in the tutorials either.

Grateful for any input.

Django is great!!!

Y-Coci


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