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  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions

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  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions

peterfarrell

class DocumentFilterSet(FilterSet):
    period = django_filters.ChoiceFilter(
        choices=Periods.choices,
        label='Period',
        field_name='period',
        method='period_filter',
    )
    
    def period_filter(self, queryset, name, value):
        if value:

peterfarrell

# 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

peterfarrell

# Adapted from: http://www.rabbitmq.com/install-debian.html
if [ ! -f /etc/apt/sources.list.d/rabbitmq.list ]
then
    echo "Installing RabbitMQ"
    echo 'deb http://www.rabbitmq.com/debian/ testing main' | sudo tee /etc/apt/sources.list.d/rabbitmq.list
    wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | sudo apt-key add -
    apt update
    apt -y install rabbitmq-server
fi

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from django.db.models.lookups import Lookup


class DateRangeLowerInf(Lookup):
    """
     Use like:

     `MyObject.objects.filter(date_range__lower_inf=True)` for infinity
     `MyObject.objects.filter(date_range__lower_inf=False)` for not infinity
    """

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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

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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)

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# Problem:
#
# If you use git submodules linking two private github repos, you'll need to create a separate deploy key for each.
# Multiple keys are not supported by Ansible, nor does ansible (when running git module) resort to your `.ssh/config` file.
# This means your ansible playbook will hang in this case.
#
# You can however use the ansible git module to checkout your repo in multiple steps, like this:
#
- hosts: webserver
  vars:

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# Written by Senko Rasic <[email protected]>
# Released into Public Domain. Use it as you like.

from django.db import models


class SingletonModel(models.Model):
    """Singleton Django Model

    Ensures there's always only one entry in the database, and can fix the