How to get the current record id from django admin form?

2008-09-05 Thread Arnold Chen 

I am using django version 1.0.

I have a admin with a form for custom validation. My validation is
done in def clean(self):

The problem is that I have a requirement to get the record id to check
against database for data validation. But i don't know how to do.
My model is:

class Category(models.Model):
name = models.CharField(max_length=100)
parent = models.ForeignKey('self')

The validation is to check if user selected the record itself as its
"parent", which is illogical.

I think i need to get the record id to check against database.
However, i am only able to get form values, but not the record id. Do
you have any idea?

Arnold




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Django 1.0 admin with inline model, IntegrityError when delete

2008-09-03 Thread Arnold Chen 

I have upgraded to django 1.0 beta or the latest version for my
development machine. And faced IntegrityError when i delete a record
with few related records. This problem do not happen before django 1.0

A Product model and a Part model, which is a 1-to-many relationship,
(a Product can have multiple Parts). The Parts has an InlineAdmin in
Product admin, so that i can modify the Part records which belongs to
it on the same admin page.

I have created Product record, with some Part records (which belong to
the Product record) and save, it is OK.
When i delete the product record i have created. The django admin
shows a confirmation page. Say that:

Are you sure?
Are you sure you want to delete the product "My Product"? All of the
following related items will be deleted:

I answered: "Yes, I'm Sure", but it shows 1451, 'Cannot delete or
update a parent row: a foreign key constraint fails'

Do you know why? my models.py and admin.py are as follows:

--
models.py
--
class Product(models.Model):
name = models.CharField(max_length=100)

class Part(models.Model):
product = models.ForeignKey(product)
name = models.CharField(max_length=100)

--
admin.py
--
class PartInline(admin.TabularInline):
model = Part

class ProductAdmin(admin.ModelAdmin):
inlines = [PartInline]

admin.site.register(Product, ProductAdmin)
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Re: Method 'allow_tags' doesn't work?

2007-11-16 Thread Arnold Chen 

I also faced this problem, i have a rolled-out site, using the
allow_tags method to do a critical mission in a customized admin site.

regards,
Arnold

On Nov 16, 3:34 am, wowar <[EMAIL PROTECTED]> wrote:
> Today, after updating django to revision 6678 method 'allow_tags'
> doesn't work. Despite it is set to True I've got html code.
>
> Regards,
> WW
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Re: ImageField Validation Error

2007-11-15 Thread Arnold Chen 

I faced this problem as well, but there is a work around. I am using
django 0.97 pre (i downloaded from svn 16th Nov, 2007)

Go to c:/python2.4/lib/site-packages/django/core/validators.py
or
/usr/lib/python2.4/site-packages/django/core/validators.py , if you
are using Fedora

comment the following lines (the line numbers in my version is 186 and
187
trial_image = Image.open(StringIO(content))
trial_image.load()

Good luck

On Nov 5, 3:27 am, Matt <[EMAIL PROTECTED]> wrote:
> I've got a model with anImageField. But, when I attempt to add an
> image via the Admin interface, I receive theerrormessage: "Upload a
> valid image. The file you uploaded was either not an image or a
> corrupted image."
>
> I'm pretty sure that all of my paths are set correctly because I can
> change the field to a FileField and add an image without any problems.
> I can also successfully work with the same image field via PIL - so I
> don't think it's not an issue with the actual image file or PIL.
>
> Is this a bug or is there something I'm not doing right? I'm running
> the latest Django from SVN, PIL 1.1.6 and  Python 2.5.1 on OS X 10.5.
> Thanks.
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Re: Using auth in model

2007-11-09 Thread Arnold Chen 

Sorry, there is a typo mistake, my question is "how to get logged-in"
user WITHOUT request parameter.
Because i want to use it in a function in models.py

regards,
Arnold

On 11月8日, 下午8時18分, Dan Fairs <[EMAIL PROTECTED]> wrote:
> > My question above can be simplified as "how to get logged-in user with
> > request parameter"
>
> request.user will give you the logged-in user.
>
> If you want to know more about Django profile support, read the docs:
>
>http://www.djangobook.com/en/beta/chapter12/
>
> You want the profiles section, near the bottom.
>
> Cheers,
> Dan
>
> --
> Dan Fairs <[EMAIL PROTECTED]>


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Re: Using auth in model

2007-11-07 Thread Arnold Chen 

My question above can be simplified as "how to get logged-in user with
request parameter"

On Nov 8, 12:32 pm, Arnold Chen <[EMAIL PROTECTED]> wrote:
> I want to let users to create their own profile in django admin. And
> when they save any new records, use their logged-in user id
> (models.ForeignKey(User)) and override the save() function of the
> model.
>
> Is there any statement that i can use? i believe it should be
> something like auth.user
>
> thanks


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Using auth in model

2007-11-07 Thread Arnold Chen 

I want to let users to create their own profile in django admin. And
when they save any new records, use their logged-in user id
(models.ForeignKey(User)) and override the save() function of the
model.

Is there any statement that i can use? i believe it should be
something like auth.user

thanks


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i18n/setlang no longer support GET

2007-09-20 Thread Arnold Chen 

I used to use /i18n/setlang?language=zh-cn approach to change
language. However i found that the latest (as of this writing 20th
Sept, 2007) svn version django do not support calling the url using
GET, and there is a sentence in the function set_language in the
i18n.py file

"Since this view changes how the user will see the rest of the site,
it must only be accessed as a POST request."

The django website shows an example of using the convenient setlang
function and the url is:
http://www.djangoproject.com/documentation/i18n/#the-set-language-redirect-view

This example is good to demonstrate the power of the function, but the
usability is not as good as its functionality.
Imagine the user don't even know English. So, the user don't know even
he/she should click on the selection box and select.

So i use my own way showing "English | 中文 | 日文 | Français" and
hyperlinking each language to corresponding setlang URL. For example,
setlang?language=fr for Français.

I don't know why the developers change like that, and if there any one
can, please tell me the consequences of using GET (by modifying the
set_language function by myself)

Arnold


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Re: SOMETIMES mod_python error

2007-09-11 Thread Arnold Chen 

Yes, the server has been restarted many times

On 9月11日, 下午6時54分, Ryan K <[EMAIL PROTECTED]> wrote:
> Have you tried restarting the web server?
>
> Arnold Chen wrote:
> > Dear all,
>
> > I am experiencing some situation that is very strange. the development
> > site ishttp://alberta.design97.com
>
> > This site is django-powered, it is up sometimes, on some computers,
> > you can visit this site for a preview, if you get an error, try reload
> > the page, usually the page will show within 5-10 times reload.
>
> > The error message that i SOMETIMES got is:
>
> > MOD_PYTHON ERROR
>
> > ProcessId:  15673
> > Interpreter:'alberta.design97.com'
>
> > ServerName: 'alberta.design97.com'
> > DocumentRoot:   '/var/www/vhosts/design97.com/subdomains/alberta/
> > httpdocs'
>
> > URI:'/'
> > Location:   '/'
> > Directory:  None
> > Filename:   '/var/www/vhosts/design97.com/subdomains/alberta/
> > httpdocs/'
> > PathInfo:   ''
>
> > Phase:  'PythonHandler'
> > Handler:'django.core.handlers.modpython'
>
> > Traceback (most recent call last):
>
> >   File "/usr/lib/python2.3/site-packages/mod_python/importer.py", line
> > 1537, in HandlerDispatch
> > default=default_handler, arg=req, silent=hlist.silent)
>
> >   File "/usr/lib/python2.3/site-packages/mod_python/importer.py", line
> > 1229, in _process_target
> > result = _execute_target(config, req, object, arg)
>
> >   File "/usr/lib/python2.3/site-packages/mod_python/importer.py", line
> > 1128, in _execute_target
> > result = object(arg)
>
> >   File "/usr/lib/python2.3/site-packages/django/core/handlers/
> > modpython.py", line 177, in handler
> > return ModPythonHandler()(req)
>
> >   File "/usr/lib/python2.3/site-packages/django/core/handlers/
> > modpython.py", line 150, in __call__
> > response = self.get_response(request)
>
> >   File "/usr/lib/python2.3/site-packages/django/core/handlers/
> > base.py", line 111, in get_response
> > return debug.technical_500_response(request, *sys.exc_info())
>
> >   File "/usr/lib/python2.3/site-packages/django/views/debug.py", line
> > 103, in technical_500_response
> > pre_context_lineno, pre_context, context_line, post_context =
> > _get_lines_from_file(filename, lineno, 7, loader, module_name)
>
> >   File "/usr/lib/python2.3/site-packages/django/views/debug.py", line
> > 195, in _get_lines_from_file
> > context_line = source[lineno].strip('\n')
>
> > IndexError: list index out of range


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SOMETIMES mod_python error

2007-09-11 Thread Arnold Chen 

Dear all,

I am experiencing some situation that is very strange. the development
site is http://alberta.design97.com

This site is django-powered, it is up sometimes, on some computers,
you can visit this site for a preview, if you get an error, try reload
the page, usually the page will show within 5-10 times reload.

The error message that i SOMETIMES got is:

MOD_PYTHON ERROR

ProcessId:  15673
Interpreter:'alberta.design97.com'

ServerName: 'alberta.design97.com'
DocumentRoot:   '/var/www/vhosts/design97.com/subdomains/alberta/
httpdocs'

URI:'/'
Location:   '/'
Directory:  None
Filename:   '/var/www/vhosts/design97.com/subdomains/alberta/
httpdocs/'
PathInfo:   ''

Phase:  'PythonHandler'
Handler:'django.core.handlers.modpython'

Traceback (most recent call last):

  File "/usr/lib/python2.3/site-packages/mod_python/importer.py", line
1537, in HandlerDispatch
default=default_handler, arg=req, silent=hlist.silent)

  File "/usr/lib/python2.3/site-packages/mod_python/importer.py", line
1229, in _process_target
result = _execute_target(config, req, object, arg)

  File "/usr/lib/python2.3/site-packages/mod_python/importer.py", line
1128, in _execute_target
result = object(arg)

  File "/usr/lib/python2.3/site-packages/django/core/handlers/
modpython.py", line 177, in handler
return ModPythonHandler()(req)

  File "/usr/lib/python2.3/site-packages/django/core/handlers/
modpython.py", line 150, in __call__
response = self.get_response(request)

  File "/usr/lib/python2.3/site-packages/django/core/handlers/
base.py", line 111, in get_response
return debug.technical_500_response(request, *sys.exc_info())

  File "/usr/lib/python2.3/site-packages/django/views/debug.py", line
103, in technical_500_response
pre_context_lineno, pre_context, context_line, post_context =
_get_lines_from_file(filename, lineno, 7, loader, module_name)

  File "/usr/lib/python2.3/site-packages/django/views/debug.py", line
195, in _get_lines_from_file
context_line = source[lineno].strip('\n')

IndexError: list index out of range


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Re: php fsockopen equivalent in Django

2007-09-09 Thread Arnold Chen 

How come i don't remember using the python socket ? thanks James

On Sep 10, 1:13 pm, "James Bennett" <[EMAIL PROTECTED]> wrote:
> On 9/9/07, Arnold Chen <[EMAIL PROTECTED]> wrote:
>
> > I am writing an application that require "silent" post of data to a
> > specific URL. I know that is a function fsockopen in PHP which can
> > achieve this, and i am looking for function in Django like that.
>
> http://docs.python.org/lib/module-socket.html
>
> Remember that "Django" is not a programming language; Django is
> written in Python, and does not try to duplicate things Python already
> handles. So when you find yourself looking for the counterpart to
> something you're used to from another language, the Python
> documentation is the best place to check.
>
> --
> "Bureaucrat Conrad, you are technically correct -- the best kind of correct."


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php fsockopen equivalent in Django

2007-09-09 Thread Arnold Chen 

Dear All,

I am writing an application that require "silent" post of data to a
specific URL. I know that is a function fsockopen in PHP which can
achieve this, and i am looking for function in Django like that.

fsockopen is used to Open Internet or Unix domain socket connection.
and you can post GET, POST data to a URL silently, here is an example
code:

\n";
} else {
$out = "GET / HTTP/1.1\r\n";
$out .= "Host: www.example.com\r\n";
$out .= "Connection: Close\r\n\r\n";

fwrite($fp, $out);
while (!feof($fp)) {
echo fgets($fp, 128);
}
fclose($fp);
}
?>

To know more about fsockopen :
http://www.php.net/fsockopen


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Re: Using session variable in models

2007-07-25 Thread Arnold Chen 

You know? you are superb!!!

Arnold

On Jul 25, 7:19 am, "Wolfram Kriesing" <[EMAIL PROTECTED]>
wrote:
> and i forgot, this allows you to access the property "name" of the
> object anywhere seemlessly, in the template, in the code, etc. this is
> pretty neat imho :-)
>
> wolfram
>
> On 7/25/07, Wolfram Kriesing <[EMAIL PROTECTED]> wrote:
>
>
>
> > after some investigation and help from the list i took this approach
> > and have to say it works great:
>
> > from django.utils import translation
>
> > @property
> > def name(self):
> > if translation.get_language()=="en":
> > return self.name_en
> > else:
> > return self.name_de
>
> > good luck
>
> > wolfram
>
> > On 7/25/07, Arnold Chen <[EMAIL PROTECTED]> wrote:
>
> > > I am implementing a multi-lingual product catalog website with Django.
> > > It is in English (default), Trad. Chinese and Simp. Chinese. I want to
> > > let user to choose the language they want, and the system display the
> > > corresponding product name (in the selected language).
>
> > > The product class is something like
>
> > > # === start class =
> > > class Product(models.Model)
> > >name_en = mode.CharField()
> > >name_tw = mode.CharField()
> > >name_cn = mode.CharField()
>
> > >def get_name(self, lang="en"):
> > >  return eval("self.name_" + lang)
>
> > > # === end class =
>
> > > The language preference that user has chosen will be saved in
> > > request.session['django_language']
>
> > > Of cos, i don't know how to use the get_name() function that i've
> > > implemented, because i can't pass the lang from view or template. So,
> > > the question is how do i get the request.session['django_language']
> > > variable in models ? or is there any other way to achieve the desired
> > > result?
>
> > > Thanks in advance.
> > > Arnold
>
> > --
> > cu
>
> > Wolfram
>
> --
> cu
>
> Wolfram


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Using session variable in models

2007-07-25 Thread Arnold Chen 

I am implementing a multi-lingual product catalog website with Django.
It is in English (default), Trad. Chinese and Simp. Chinese. I want to
let user to choose the language they want, and the system display the
corresponding product name (in the selected language).

The product class is something like

# === start class =
class Product(models.Model)
   name_en = mode.CharField()
   name_tw = mode.CharField()
   name_cn = mode.CharField()

   def get_name(self, lang="en"):
 return eval("self.name_" + lang)

# === end class =

The language preference that user has chosen will be saved in
request.session['django_language']

Of cos, i don't know how to use the get_name() function that i've
implemented, because i can't pass the lang from view or template. So,
the question is how do i get the request.session['django_language']
variable in models ? or is there any other way to achieve the desired
result?

Thanks in advance.
Arnold


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Re: Django serving static PDF file

2007-07-17 Thread Arnold Chen 

Besides, i want to revise my first question as:

How to serve static file by "pushing" a PDF to client? In php, there
is a way to serve PDF by pushing the file to the client, and client to
choose "Save As" or "Open" the file directly.

Adobe reader is very slow if they run in browsers, and most of the
time, they hang the browser, so is there a way to push ?

regards,
Arnold

On Jul 17, 4:03 pm, Arnold Chen <[EMAIL PROTECTED]> wrote:
> Thanks Ben,
>
> Besides, i've found thatwww.lawrence.comandwww.ljworld.com(which
> are famous sites that use django) use ahttp://media.their-domain-name.com
> to store the media files.
> All static files, images, css are from thehttp://media.their-domain-name.com
> server. Obviously the media subdomain is not a django environment, i
> wonder if we can setup an environment like that, and can i still
> upload image to the media subdomain from the django admin console?
>
> Arnold
>
> On Jul 17, 3:29 pm, Ben van Staveren <[EMAIL PROTECTED]> wrote:
>
> > You're better off not doing it with Django, just make a directory
> > that won't be handled by Django and stick all your static content in
> > there. After all, the webserver is usually better at serving static
> > files than Django is :)
>
> > On 17/07/2007, at 2:26 PM, Arnold Chen wrote:
>
> > > Can any one please tell me how to serve a static PDF in django ? The
> > > file is located in the server, and do not need to be created on the
> > > fly (by using report lab). I have done it in PHP by using header, but
> > > i just don't know how to do it with django. Thanks


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Re: Django serving static PDF file

2007-07-17 Thread Arnold Chen 

Thanks Ben,

Besides, i've found that www.lawrence.com and www.ljworld.com (which
are famous sites that use django) use a http://media.their-domain-name.com
to store the media files.
All static files, images, css are from the http://media.their-domain-name.com
server. Obviously the media subdomain is not a django environment, i
wonder if we can setup an environment like that, and can i still
upload image to the media subdomain from the django admin console?

Arnold


On Jul 17, 3:29 pm, Ben van Staveren <[EMAIL PROTECTED]> wrote:
> You're better off not doing it with Django, just make a directory
> that won't be handled by Django and stick all your static content in
> there. After all, the webserver is usually better at serving static
> files than Django is :)
>
> On 17/07/2007, at 2:26 PM, Arnold Chen wrote:
>
>
>
> > Can any one please tell me how to serve a static PDF in django ? The
> > file is located in the server, and do not need to be created on the
> > fly (by using report lab). I have done it in PHP by using header, but
> > i just don't know how to do it with django. Thanks


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Django serving static PDF file

2007-07-17 Thread Arnold Chen 

Can any one please tell me how to serve a static PDF in django ? The
file is located in the server, and do not need to be created on the
fly (by using report lab). I have done it in PHP by using header, but
i just don't know how to do it with django. Thanks


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