jurrian

from app.forms import FilterColumnsForm
from django.contrib.admin.utils import label_for_field
from django.template.response import TemplateResponse
from django.urls import path
from django.utils.translation import gettext_lazy as _


class FilterColumnsMixin:
    """Allow users to filter the columns in the changelist.
    This will add a "Columns" button to the changelist page to select the columns to display.

jurrian

from datetime import timedelta

from django.db import models
from django.utils.timezone import now


class ExpiringSuperuserMixin:
    _is_superuser = models.DateTimeField(
        _('superuser until'),
        blank=True,

jurrian

class CurrencySerializerField(DecimalField):
    """Serialize CurrencyField with 2 decimal places for presentation, keep 4 decimals for internal.

    This is implemented by BaseSerializer.

    Cannot just set `decimal_places=2` since it will error on input validation when 4 decimals.
    For rounding we use "bankers rounding", this is the most common practise but local law can differ.
    """
    def __init__(self, *args, max_digits=None, decimal_places=None, **kwargs):
        """Some values are hard coded as they are supposed to be the same for all.

jurrian

class CurrencyField(DecimalField):
    """Special DecimalField with defaults for currency.

    Currency should be stored in the database with 4 decimal places so any calculations will not have rounding errors.
    Formfields will use 4 decimal places to avoid rounding errors. Any other display of currency fields uses 2 decimals.
    All fields that process currency should use this field, especially when used in calculations.
    """
    display_decimals = 2  # Representation decimals
    db_decimals = 4  # Database storage decimals
    max_digits = 10

jurrian

{# file: templates/admin/change_list.html #}

{% extends 'admin/change_list.html' %}
{% load i18n admin_urls %}

{% block object-tools-items %}
  {% if cl.pk_attname != 'history_id' %}
  <li>
    {% url opts|admin_urlname:'changelist_history' as history_url %}
    <a href="{% add_preserved_filters history_url %}" class="historylink">{% translate "History" %}</a>

jurrian

import time
from json import JSONDecodeError
from typing import Dict

import requests
from requests import PreparedRequest, RequestException
from requests.auth import AuthBase

REQUEST_TIMEOUT = 30  # Seconds

jurrian

class DiffMixin:
    """Detect changes on a model instance after saving or deleting.

    The original will be retrieved from the db, so any unrelated added attributes are not taken into account.
    It uses save() and delete() as "hooks", but can also be triggered manually using copy_original():

    ```
    class SomeModel(DiffMixin, models.Model):
        some_attribute = models.IntegerField()
    

jurrian

from django.contrib.admin import widgets
from django.contrib.admin.options import get_ul_class
from django.contrib.admin.widgets import AutocompleteSelect
from django.forms import boundfield, models
from django.urls import reverse
from django.urls.exceptions import NoReverseMatch
from django.utils.text import Truncator
from django.utils.translation import gettext_lazy as _

jurrian

import logging
import sentry_sdk

from ratelimitingfilter import RateLimitingFilter
from sentry_sdk.integrations.django import DjangoIntegration
from sentry_sdk.integrations.logging import LoggingIntegration

# Sentry
sentry_logging = LoggingIntegration(
    level=logging.INFO,  # Capture info and above as breadcrumbs