ketanbhatt

def update_with_last_modified_time(qs, **kwargs):
    # This function adds any auto_now field to the update call because QuerySet.update() doesn't do it :X
    model_fields = qs.model._meta.get_fields()
    fields_and_value_map = {}
    for field in model_fields:
        try:
            auto_now = field.__getattribute__('auto_now')
        except AttributeError:
            auto_now = False

ketanbhatt

from django.contrib.admin import ModelAdmin

class MyTableAdmin(ModelAdmin):
    ...
    paginator = LargeTablePaginator
    ...
    

ketanbhatt

WITH user_ids AS
  (SELECT id
   FROM user
   WHERE account_id IN
       (SELECT generate_series(1,1000)))
SELECT purchase.id
FROM purchase
WHERE user_id IN
    (SELECT id
     FROM user_ids);

ketanbhatt

SELECT tablename,
       indexname,
       indexdef
FROM pg_indexes
WHERE tablename = '$$table_name$$'

ketanbhatt

import spray.json._
import DefaultJsonProtocol._


object Main extends App {
  class Card(val cardId: String, val name: String, val cardType: String, val effortHours: Double) {

    def formatCard(idx: Int): String = {
      idx + ". " + name + ": [" + effortHours + " hour(s)]"
    }

ketanbhatt

class Subject(object):
	def __init__(self):
		self.observer_list = []

	def register_observer(obs):
		self.observer_list.append(obs)

	def remove_observer(obs):
		if obs in self.observer_list:
			self.observer_list.remove(obs)

ketanbhatt

class NewsGetterMachine(object):
	def __init__(self):
		self.news = None

	def get_news():
		return self.news

	def news_flash():
		news = self.get_news()

ketanbhatt

# Flying Behavior
class FlyBehavior(object):
	def fly():
		raise NotImplementedError

class FlyWithWings(FlyBehavior):
	def fly():
		print "I am flying!"

class FlyNoWay(FlyBehavior):

ketanbhatt

class Duck(object):
	def quack():
		print "Quack! Quack!"

	def swim():
		print "Yaay I am swimming!"

	def display():
		raise NotImplementedError

ketanbhatt

class MyModelIndex(AutoPrepareTextIndexMixin, CelerySearchIndex, indexes.Indexable):
    model_pk = indexes.IntegerField(model_attr='pk')  # This is required
    text = indexes.EdgeNgramField(document=True)  # This too
    some_boolean = indexes.IntegerField(model_attr='some_boolean')

    # Filters should map to the exact field name that the admin will access them by.
    # Example: foreign keys are accessed by FKModel__id. This is for filters
    rel_model = indexes.IntegerField(model_attr='rel_model__id')

    document_fields = ['name', 'nickname', 'rel_model__title']  # ^_^