What is the purpose of the "no" field? If it's for display, it may be
that you don't need to store it in the database at all. Something
like:
no, obj = enumerate(UserProfile.objects.all())
Even if it does need to be stored in the database, it's a calculated
value that must be based upon the entir
Are you looking for custom management commands?
https://docs.djangoproject.com/en/dev/howto/custom-management-commands/
On May 2, 8:59 am, alon wrote:
> running
>
> $python manager.py shell
>
> opens a python shell
> is there any way (a parameter) to make the manager run a python file
> with my
Nail, meet head.
Thanks! I was thinking along similar lines but stupidly checked
everywhere (my code, apache confs, etc.) except the django source on
the server itself.
On Mar 23, 11:36 am, Reinout van Rees wrote:
> On 23-03-12 14:49, Scott Gould wrote:
>
>
>
> > Our syslog h
Hi folks,
Our syslog has been filling up for some time with this stuff and we
only just noticed due to logrotate breaking on us. For what appears to
be every django request across all virtual hosts, we are getting a
pair of lines, like so (blank lines inserted by me):
Jan 27 14:48:52 cloweb01 apa
Nothing native. I'd store it in seconds, as an int, and let the model
convert to and from a timedelta. Looks like there's a snippet all
ready to go:
http://djangosnippets.org/snippets/1060/
On Aug 9, 6:32 am, Mohamed Ghoneim wrote:
> Hey guys,
>
> I am just wondering if there is a time duration
I'd raise a custom exception (e.g. "PasswordExpiredError") and handle
the message creation in the view.
On Jul 26, 3:59 pm, Steven Smith wrote:
> Is there a way to access the HttpResponse, or issue a redirect from
> within a custom authentication backend? I have Django hooked up to our
> Active D
I'd either add a manager with a method that did the query you describe
in SQL, or (if you're wanting the whole queryset anyway) just
calculate it via:
months = list(set(x.datetime_field.month for x in queryset))
months.sort()
On May 19, 1:03 am, Ian Turner wrote:
> Hi,
>
> I would like t
Try something like this:
field = form.fields['property']
data = form.cleaned_data['property']
if isinstance(data, (list, tuple)):
# for multi-selects
friendly_name = [x[1] for x in field.field.choices if x[0] in
data]
else:
On Jan 4, 9:38 pm, Shawn Milochik wrote:
> Hi Ondřej.
>
> ...
> #2: The validation should all be done during form validation[2], prior to
> save. Using a Form or ModelForm. That way, the user can get friendly, useful
> errors.
Further to this, look into model validation if the logic is integral
A simple custom ModelForm should do the trick:
from django.contrib.auth.models import User
class UserChangeForm(forms.ModelForm):
class Meta:
fields = ('first_name', 'last_name',)
model = User
On Nov 24, 1:33 pm, BozoJoe wrote:
> HI,
>
> I'm using django
> If not, I could create a new database, and devote it to the django
> stuff. Is that a good solution? Are there significant disadvantages to
> using a separate mysql database just for the django stuff? Is there
> maintenance overhead for the dba? (I don't know.) Are there any
> disadvantages, say,
Personally I hate writing raw SQL so I would probably try something
like this (untested):
sales = Sale.objects.filter(date_created__range=(init_date,ends_date))
.values(date_ created__month)
.aggregate(total_sales=Sum('total_value'))
sales_by_month = [(x.year, x.month, [y for y in sales i
> One idea would be to put 'fieldname' as the first parameter to the
> function, then use functools.partial [1] to create partial functions
> for each file field with the value set appropriately:
>
> thumbnail_image = FileField(upload_to=partial(get_upload_path,
> 'thumbnail_image'))
Outst
Hi folks,
I've got all my file uploads (that go to S3 as it happens, but I don't
think that's overly important) taking their path from one upload_to
delegate:
def get_upload_path(instance, filename=None):
"""
Defaults to appname/modelname/uuid.
"""
return "%s/%s/%s
> Second, I'm not sure I understood the last part about getting the
> field within each model.
Sorry, I misread, thinking you were talking about having different
parameters of each model being responsible for what counted as
"latest". Bruno's solution looks good to me.
--
You received this messa
Maybe -- in fact, almost certainly not -- the best way, but this is
how I do that kind of thing:
a_queryset = ModelA.objects.all()
another_queryset = ModelB.objects.filter.(by_something=True)
yet_another_queryset =
ModelC.objects.exclude(by_something_else=False)
fr
What's your use case? Are "nest, pest and rest" always "nest, pest and
rest" -- or could they be "rest, pest and nest", or "nest, best, and
rest"?
If they're set in stone; that is, it's always nest, followed by pest,
followed by rest, then it's easy enough to just parameterize the url:
'/nest
With a huge whopping disclaimer that I've never done this before:
Wouldn't you simply be abe to add an explicit "id =
BigIntegerField(primary_key=True)" to the model and change the column
type accordingly in mysql?
On Oct 7, 4:16 pm, indymike wrote:
> Here's my issue - I'm going to run out of in
Your .list is in the wrong place:
{% for date in sale_list%}
{{ date.grouper }}
{% for sale in date.list %}
{{ sale.item }} - {{ sale.qty }}
{% endfor %}
{% endfor %}
Regards
Scott
On Oct 5, 2:28 pm, Gath wrote:
> Guys
>
> I have the follow
Python has you covered:
my_string = ",".join(my_list)
HTH,
Scott
On Oct 4, 7:41 am, ashy wrote:
> Hi All,
>
> I am writing a django function in which I have a following list:
> li = ['a','b','c']
> I want to create a string from the list which should look like
> str = 'a,b,c'
>
> I plan to pass
> def logout(request):
> logout(request)
Infinite loop, no?
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Two ways, both requiring javascript:
1. Populate the city dropdown via ajax on country change.
2. Have your template write javascript to do country->city lookups and
alter the contents of the city dropdown on country change.
On Sep 19, 2:42 am, Andy wrote:
> I have a model FieldReport that has,
Your ID: if it's a new object, you can't.
Another field in the model: if it's calculated instead of database-
provided, sure. I use UUIDs for this:
def get_uuid():
import uuid
return str(uuid.uuid4())
class UploadedFileModel(models.Model):
physical_file = FileField(verbos
Have a read through this article, Dan:
http://www.b-list.org/weblog/2008/nov/09/dynamic-forms/
On Sep 2, 11:19 am, Dan Klaffenbach
wrote:
> On 2 Sep., 16:48, Daniel Roseman wrote:> It's not
> clear exactly what you want. Using RequestContext and the
> > request context processor will ensure th
First, just to make absolutely clear you understand, the "user's name"
isn't the foreign key itself -- that would be the user's ID. The
user's name is what would be displayed to help you *select* the
correct ID, under the hood.
To the question at hand, it's quite simple to add a method to your
Mod
You can refer to individual fields by name, for example:
>
> {% form.first_name %}
>
Looping through them works fine for simple forms but as you say, if
you want something more elaborate in your template, you sometimes need
to go field-by-field.
What I do is write an inclusion tag with all
You'll want to call is_valid() only if the request.method is "POST",
plus your code leaves the possibility of an error if none of those
permissions is found (your elif should probably simply be an else?).
On Aug 16, 6:49 am, Mess wrote:
> Hi,
>
> I have a model where different users should have d
Define a custom ModelForm for your model that sets the appropriate
queryset parameter (either altering the field in __init__, or just
defining the field in the class as a ModelMultipleChoiceField). Then
register that ModelForm for use in the admin (via a ModelAdmin class).
On Aug 9, 7:51 pm, Marti
Not that I'm aware of, in which case I'd say a tag (or even a filter)
*is* the "built-in way". No great hardship:
@register.filter
def class_name(value):
return value.__class__.__name__
On Aug 4, 11:13 am, "David.D" wrote:
> There's no django's
How about writing a simple template tag that takes an object and
returns object.__class__.__name__?
On Aug 4, 10:20 am, "David.D" wrote:
> I did it by adding this to my models:
> def get_model_name(self):
> return self.__class__.__name__
>
> And it works
>
> But I don
You don't need order_by to get distinct values per se, but in this
case you need to put it in to override whatever default ordering you
have on your model (since any order_by fields will be included in the
query and thwart your distinct()).
On Jul 30, 3:52 am, tuxcanfly wrote:
> Thanks, that work
I often cringe it when people trot out the "read the docs" line, but
that's honestly what it comes down to in this case. An app isn't some
sacred walled city. Just write a template tag, import whatever you
need from whichever apps they belong to, and stick it on the page.
But before you do that, r
It won't work because there's no database column that corresponds to
the full name.
A simple but limited alternative would be to split the string on " "
and use the result as first_name and last_name, but you would probably
want to take into account first_names and/or last_names with
legitimate sp
Does your model refer to any other fields for its default ordering?
http://docs.djangoproject.com/en/1.2/ref/models/querysets/#distinct
On Jul 21, 1:06 pm, rmschne wrote:
> I'm trying to use the distinct() and it's giving me unexpected
> results. Surely it's something simple, but I can't spot
all_day = BooleanField()
>
> # subclass DateRange so we can reuse it in various models
> class EventDateRange(DateRange):
> date = ForeignKey(Event)
>
> class Event(Model):
> #various other fields required for event
>
> Does this seem like it would make more sense?
&
My immediate thought upon reading your post was that you should build
an accompanying custom model field. Having said that, I haven't had
cause to do one that involved (only extend -- simply -- the stock
fields) so can't provide any specifics.
http://docs.djangoproject.com/en/1.2/howto/custom-mode
First things first:
1. Do you have a Model for your data?
2. Is your form a ModelForm attached to this Model?
On Jul 20, 2:14 pm, commonzenpython wrote:
> VolunteerForm is the name of my form class in forms.py, i put the code
> you gave me :
>
> if request.POST:
> form = VolunteerForm(re
The Django *admin* only uses one field, ever.
Bit of an irritating limitation, I grant you, but with the use of date
hierarchies and list filters it's not too bad.
On Jul 14, 7:40 pm, hjebbers wrote:
> is there a way to have a model class sorted on multiple fields?
> in the meta class of my mode
Try it and see :)
If the checkboxes share the same name (as in the name attribute of the
input tag), then the checked ones' values form a comma-delimited list.
On Jul 13, 11:19 am, zippzom wrote:
> Maybe this is a silly question, but if I have a form with multiple
> checkboxes that are outputted
Your init is expecting a value for field3_type, so you need to provide
it when you create the form in your view (prior to request.POST in the
postback instance).
On Jul 12, 2:44 pm, Nick wrote:
> I am working on a validation that will require a field be filled in if
> it is another field enters o
As long as the last number is 4 or greater (at least read access for
all) you should be fine.
Regards
Scott
On Jun 27, 5:50 am, Rusty Shackleford
wrote:
> Hi,
>
> I'm about to deploy my first Django app, but I have a few questions
> about permissions.
>
> The project container is at '/usr/local/
There may well be a better way to do this, especially since it's been
a good year since I was struggling with this myself. (Very similar
case to yours, different subject matter of course.)
The way I ended up doing it was to use a template tag and some list
comprehensions to whittle things down. E.
Apologies for the "__initial__" stuff -- damn iPhone autocomplete!
On Jun 11, 11:15 am, rahul jain wrote:
> It was rw-r--r-- . I also modified it to 777 by" chmod -R 777". But
> did not fix my problem.
>
> This is the error which I am getting
> ImportError: cannot import name
>
> --RJ
>
>
>
> On
It's not really a matter of "working around" it. Your .xxx method/
property is an attribute of the object. What you evidently want from
the database is *not* a list of those objects, but rather a summary
representation of them. Trying to apply your .xxx is meaningless as
you don't have a discrete o
Did you put Test1.py and Test2.py into a "models" directory where
models.py would normally be, and add an __initial__.py file to it?
On Jun 10, 5:18 pm, rahul jain wrote:
> HI Dan,
>
> Thanks for your response but that will not solve my problem.
>
> I am not splitting models. I am splitting actio
If you're ordering on "District 1", "District 2", etc. then the number
is part of a string and will be sorted alphabetically. I image your
only recourse will be to use the numeric field directly, and deal with
prepending "District " to it in some other fashion.
On Jun 9, 10:38 am, Nick wrote:
> H
Hi folks,
I have various models with File and Image fields. I want to keep the
filesystem storage clean, removing any orphaned file upon a new one
being uploaded. To date I've been overriding save() in each model,
which isn't terribly robust:
class MyModel
def save(self, **kwargs):
4, 8:50 am, Massimiliano della Rovere
wrote:
> Thanks Scott,
> I have one doubt though: I need a bound form to properly set the queryset.
> Using your method I'd use an unbound form, am I wrong?
>
>
>
> On Fri, Jun 4, 2010 at 14:33, Scott Gould wrote:
> > Create a
Create a ModelForm for your model (A), set the queryset to what you
want on the appropriate field (n), and then register that ModelForm
for admin use in your admins.py.
Regards
Scott
On Jun 4, 6:14 am, Massimiliano della Rovere
wrote:
> When displayed in the Admin interfaces, I'd like to filter
Try:
myB = B.objects.get(pk=1)
myCs = C.objects.filter(a__b=myB)
Regards
Scott
> I have model A in which there is field ForeignKey(B). I also have
> model C which inherits from model A. None of these models is abstract.
> Having B object, can I find all C objects pointing to it? When I use
> som
You're after get_model in django.db.models:
model_class = get_model(*model_string.split('.'))
See James Bennet's post in this topic:
http://www.b-list.org/weblog/2007/nov/03/working-models/
Regards
Scott
On May 27, 12:13 am, Jeffrey Taggarty wrote:
> Hey Guys,
>
> I am trying to build th
>From your description thus far I'd probably try to use
django.contrib.comments and be done with it. Build the specific models
you need for your app, but don't reinvent the wheel when there's a
perfectly good generic commenting app out there already.
On May 25, 12:01 pm, nameless wrote:
> mmm so
On May 25, 3:57 am, maciekjbl wrote:
> Thank you, for your answer.
>
> I didn't have time to check this because of flood in my company.
>
> I thought that 'regroup' can't be order by any other sorting beside
> it's own.
>
> So I have to order it right and then use 'regroup' or 'regroup' then
> ord
Presumably you want the same object to be able to be a comment on
someone else's post as well as a post in it's own right, that others
could comment on? Looks straightforward enough, though I can't see why
you'd need the generic fields in the model.
Regards
Scott
On May 25, 5:54 am, nameless wro
Can you not simply pass foo:
{% make_button 'click me' foo %}
... resolve it, and then use either its .get_absolute_url() or
something other url, depending on what foo is? The inclusion tag's
python code is far more equipped to deal with logic decisions, special
cases, etc. than the template is.
> Recall I'd like to make a table with each row in the table being a
> "form" for a paired Author-Book item (recall my book-author is 1-1).
> If I make an Author formset and a Books formset and then render them
> in the template it's not clear to me that the book part of the form
> would in fact co
Point taken, three times.
On May 24, 9:40 am, Karen Tracey wrote:
> On Mon, May 24, 2010 at 8:27 AM, Scott Gould wrote:
> > > My database and all of its tables are UTF8 encoded with UTF8 collation
> > > (DEFAULT CHARSET=utf8;)
> > > The data I am inputting is unic
> My database and all of its tables are UTF8 encoded with UTF8 collation
> (DEFAULT CHARSET=utf8;)
> The data I am inputting is unicode
> (u'Save up to 25% on your online order of select HP LaserJet\x92s')
>
>
> But when I try to save this data I get an error
> Incorrect string value: '\\xC2\\x92s
> # Models
> class Author(models.Model):
> name = models.CharField(max_length=100)
> address = models.CharField(max_length=100)
>
> class Book(models.Model):
> author_id = models.OneToOneField(Author)
> title = models.CharField(max_length=100)
>
> I'd like to have a form that allowe
> Can you run multiple apps in one view, and what would be the best way
> to do that.
Firstly you can't "run an app" as such. Think of apps as folders on
your desktop -- they organise and compartmentalise in Django.
> Let's say I have two apps and I want to display some items from app1
> and some
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