librelist archives

Re: [easymode] Using django-easymode with django trunk

From:

Frédéric Roland

Date:

2011-10-10 @ 15:47

Hi Lars,

With 1.3.1 it was ok, I switched to Django trunk because you can make the 
ordering dynamic. My I idea was to sort the records on the field related 
to the language of the current user. ModelAdmin can have a get_ordering() 
method that I wanted to use.

Also the database I use for development is sqlite I don't know if it could
explain the bug.

Thank you for your explanation about Lazy foreign keys.

I can provide you more information to help debug that issue if needed.

Regards,
Frédéric

Le 10 oct. 2011 à 00:29, Lars van de Kerkhof a écrit :

> Very strange what you are experiencing. It is clear that the field is 
internationalized because multiple versions of description are generated. 
It is VERY weird though that all get the same name. If anything went wrong
they should at least be named 'description_' instead of 'description'.
> 
> Please try and verify that this problem goes away if you use django 
1.3.1 instead of trunk. Easymode will be updated with fixes for this 
problem as soon as 1.4 will be released. (Maybe some time before because 
you pointed out an incompatibility).
> 
> Are you forced to use trunk?
> 
> Lazy foreign keys is when you set the pointed to class with a model id 
(string) instead of a class:
> 
> class Foo(models.Model):
>   bar = models.ForeignKey('somepackage.Bar')
> 
> This way you don't have to import the model Bar from somepackage, which 
can lead to problems because of circular imports.
> I will update the documentation to include an example of the lazy foreign key.
> 
> Thank you for reporting these issues.
> 
> Kind regards
> 
> Lars van de Kerkhof
> 
> On 9 okt. 2011, at 23:35, Frédéric Roland wrote:
> 
>> Hello,
>> I'm making a reference data model and I'd like to internationalize the 
description field of my model but unfortunatelly it doesn't work with 
django trunk.
>> Here is the model:
>> 
>> @I18n('description')
>> class ReferenceDataValue(ModelAccounting):
>>  domain = models.ForeignKey('ReferenceDataDomain',related_name='values')
>>  code = models.CharField(max_length=10)
>>  description = models.CharField(max_length=255)
>>  parent = models.ForeignKey('self', related_name='child', blank=True, 
null=True)
>>  display_order = models.IntegerField(default=0)
>>  is_default = models.BooleanField()
>>  links = models.ManyToManyField('self', through='ReferenceDataLink', 
symmetrical=False, related_name = 'linked_value', blank=True, null=True)
>> 
>>  def __unicode__(self):
>>      return self.description
>> 
>> and here is the generated sql:
>> 
>> CREATE TABLE "ReferenceData_referencedatavalue" (
>>  "id" integer NOT NULL PRIMARY KEY,
>>  "is_deleted" bool NOT NULL,
>>  "created_at" datetime NOT NULL,
>>  "modified_at" datetime NOT NULL,
>>  "created_by_id" integer NOT NULL REFERENCES "auth_user" ("id"),
>>  "modified_by_id" integer NOT NULL REFERENCES "auth_user" ("id"),
>>  "domain_id" integer NOT NULL REFERENCES 
"ReferenceData_referencedatadomain" ("id"),
>>  "code" varchar(10) NOT NULL,
>>  "description" varchar(255),
>>  "description" varchar(255),
>>  "description" varchar(255),
>>  "description" varchar(255),
>>  "description" varchar(255),
>>  "description" varchar(255),
>>  "parent_id" integer,
>>  "display_order" integer NOT NULL,
>>  "is_default" bool NOT NULL
>> )
>> 
>> and here is the relevant part of the settings.py file:
>> 
>> USE_SHORT_LANGUAGE_CODES = True
>> 
>> # Language code for this installation. All choices can be found here:
>> # http://www.i18nguy.com/unicode/language-identifiers.html
>> LANGUAGE_CODE = 'en'
>> 
>> LANGUAGES = (('fr','Français'),
>>            ('ar','Arabe'),
>>            ('tr','Turk'),
>>            ('en','English'),
>>            ('nl','Dutch'),
>>            ('de','German'),
>>          )
>> 
>> So there are 6 copies of the internationalized field "description" one 
for each language. but it look like the name has not been suffixed by the 
language code.
>> 
>> Can you tell me what I did wrong or if there is a workaround ?
>> 
>> Also I noticed that we are advised to use lazy foreign key but I don't 
now what it is and doesn't understand it even after searching that term on
google.
>> Could you please explain it to me with an example ?
>> 
>> Best regards,
>> Frédéric Roland
>> 
>> 
>> Abdelmalek
>> frederic.roland@creativeconvergence.be
>> @rolandf
>> 
>> 
>> 
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