db 11gr2 - Page 203 - Developer IT

Generate Enum from Values present in a table using ADO.NET Entity framework

- by Vinni

My requirement is to create an Enum based on values present in a table from DB. I am using ADO.NET Entity Framework model (.edmx file), Can any one of you help me out... Thanks, Vinni

Why can't I use getattr with Django models?

I've seen examples online of people using __getattr__ with Django models, but whenever I try I get errors. (Django 1.2.3) I don't have any problems when I am using __getattr__ on normal objects. For example: class Post(object): def __getattr__(self, name): return 42 Works just fine... >>> from blog.models import Post >>> p = Post() >>> p.random 42 Now when I try it with a Django model: from django.db import models class Post(models.Model): def __getattr__(self, name): return 42 And test it on on the interpreter: >>> from blog.models import Post >>> p = Post() ERROR: An unexpected error occurred while tokenizing input The following traceback may be corrupted or invalid The error message is: ('EOF in multi-line statement', (6, 0)) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /Users/josh/project/ in () /Users/josh/project/lib/python2.6/site-packages/django/db/models/base.pyc in init(self, *args, **kwargs) 338 if kwargs: 339 raise TypeError("'%s' is an invalid keyword argument for this function" % kwargs.keys()[0]) -- 340 signals.post_init.send(sender=self.class, instance=self) 341 342 def repr(self): /Users/josh/project/lib/python2.6/site-packages/django/dispatch/dispatcher.pyc in send(self, sender, **named) 160 161 for receiver in self._live_receivers(_make_id(sender)): -- 162 response = receiver(signal=self, sender=sender, **named) 163 responses.append((receiver, response)) 164 return responses /Users/josh/project/python2.6/site-packages/photologue/models.pyc in add_methods(sender, instance, signal, *args, **kwargs) 728 """ 729 if hasattr(instance, 'add_accessor_methods'): -- 730 instance.add_accessor_methods() 731 732 # connect the add_accessor_methods function to the post_init signal TypeError: 'int' object is not callable Can someone explain what is going on? EDIT: I may have been too abstract in the examples, here is some code that is closer to what I actually would use on the website: class Post(models.Model): title = models.CharField(max_length=255) slug = models.SlugField() date_published = models.DateTimeField() content = RichTextField('Content', blank=True, null=True) # Etc... Class CuratedPost(models.Model): post = models.ForeignKey('Post') position = models.PositiveSmallIntegerField() def __getattr__(self, name): ''' If the user tries to access a property of the CuratedPost, return the property of the Post instead... ''' return self.post.name # Etc... While I could create a property for each attribute of the Post class, that would lead to a lot of code duplication. Further more, that would mean anytime I add or edit a attribute of the Post class I would have to remember to make the same change to the CuratedPost class, which seems like a recipe for code rot.

Search Results

Search found 10189 results on 408 pages for 'db 11gr2'.

Page 203/408 | < Previous Page | 199 200 201 202 203 204 205 206 207 208 209 210 | Next Page >

- by Vinni

- by Joshmaker

- by mobibob

- by mr.bio

- by theband

- by Glenn Slaven

- by user326801

- by Abu Hamzah

- by Scott

- by uno

- by Nasser Hajloo

- by Veejay

- by Nathan Campos

- by Rajeev

- by wsd

- by bonefisher

- by Renier

- by user296516

- by Michael

- by Luca Bartoletti

- by Techpriester

- by abovesun

- by Mr Shoubs

- by sms

- by Vijay Bobba

< Previous Page | 199 200 201 202 203 204 205 206 207 208 209 210 | Next Page >