yuekui

from django.db.models import Q
from django.db.models.constants import LOOKUP_SEP
from django_filters import rest_framework as django_filters
from django_filters.constants import EMPTY_VALUES


class GroupFilterSet(django_filters.FilterSet):
    def filter_queryset(self, queryset):
        """
        Group the fitlers by the first join table to

sameerkumar18

# Add this code in any Django app's admin.py
# Works for all Task Statuses; you can filter them in line 12.

import ast
import importlib
import json

from django.contrib import admin
from django.contrib import messages
from django.utils.safestring import mark_safe

russmatney

class GroupFilter:
    """
    The work here is largely cherry-picked from this unmerged django-filters PR:
    https://github.com/carltongibson/django-filter/pull/1167/files
    """

    def __init__(self, filter_names):
        self.filter_names = filter_names

    def set_parent(self, parent):

alysivji

# -*- coding: utf-8; mode: django -*-
import graphviz
from optparse import make_option

from django.core.management.base import BaseCommand
from django.utils.encoding import force_text

from django_fsm import FSMFieldMixin, GET_STATE, RETURN_VALUE

try:

loilo

Vue: Pass Slots through from Parent to Child Components

The Situation

• We've got some components A, B and C which provide different slots.

  const A = {
    template: `<div><slot name="a">Default A Content</slot></div>`
  }

const B = {

lovemyliwu

class CustomTask(Task):
    def on_failure(self, exc, task_id, args, kwargs, einfo):
        info = '[{0}] failed: {1}'.format(task_id, exc)
        logger.exception(info, exc_info=exc)
        super(CustomTask, self).on_failure(exc, task_id, args, kwargs, einfo)

    def on_success(self, retval, task_id, args, kwargs):
        global app
        if app.is_warm_shutdown:
            app.consumer.connection._default_channel.do_restore = False

benzkji

# coding: utf-8
from __future__ import unicode_literals
import os
from pdfminer.pdfdocument import PDFEncryptionError

from pdfminer.pdfinterp import PDFResourceManager, PDFPageInterpreter
from pdfminer.converter import TextConverter
from pdfminer.layout import LAParams
from pdfminer.pdfpage import PDFPage
from cStringIO import StringIO

LeCoupa

// XPath CheatSheet
// To test XPath in your Chrome Debugger: $x('/html/body')
// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/


// 0. XPath Examples.
// More: http://xpath.alephzarro.com/content/cheatsheet.html


'//hr[@class="edge" and position()=1]'                // every first hr of 'edge' class

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

Nagyman

Workflows (States) in Django

I'm going to cover a simple, but effective, utility for managing state and transitions (aka workflow). We often need to store the state (status) of a model and it should only be in one state at a time.

Common Software Uses

• Publishing (Draft->Approved->Published->Expired->Deleted)