Files
centurion_erp/app/accounting/models/asset_base.py
2025-05-19 20:32:43 +09:30

366 lines
8.1 KiB
Python

from django.apps import apps
from django.db import models
from rest_framework.reverse import reverse
from access.fields import AutoCreatedField, AutoLastModifiedField
from access.models.tenancy import TenancyObject
class AssetBase(
TenancyObject,
):
"""Asset Base Model
This model forms the base of ALL asset models and contains the core
features for all sub-models.
**Don't** use this model directly, it should be used via a sub-model.
"""
app_namespace = 'accounting'
@property
def _base_model(self):
return AssetBase
class Meta:
ordering = [
'id'
]
sub_model_type = 'asset'
verbose_name = "Asset"
verbose_name_plural = "Assets"
def validate_not_null(field):
if field is None:
return False
return True
is_global = None
id = models.AutoField(
blank = False,
help_text = 'Ticket ID Number',
primary_key = True,
unique = True,
verbose_name = 'Number',
)
asset_number = models.CharField(
blank = True,
help_text = 'Number or tag to use to track this asset',
max_length = 30,
null = True,
unique = True,
verbose_name = 'Asset Number',
)
serial_number = models.CharField(
blank = True,
help_text = 'Serial number of this asset assigned by manufacturer.',
max_length = 30,
null = True,
unique = True,
verbose_name = 'Serial Number',
)
# category = models.ForeignKey(
# TicketCategory,
# blank = False,
# help_text = 'Category for this asset',
# on_delete = models.PROTECT,
# verbose_name = 'Category',
# )
"""Category & Subcategory: Assets are grouped into broad categories like IT
equipment, vehicles, furniture, or heavy machinery, with further
subcategorization to increase granularity. This classification
facilitates reporting, lifecycle planning, and policy enforcement for
different asset types.
"""
# Status
# model (manufacturer / model)
@property
def get_model_type(self):
"""Fetch the Ticket Type
You can safely override this function as long as it's called or the
logic is included in your over-ridden function.
Returns:
str: The models `Meta.verbose_name` in lowercase and without spaces
None: The ticket is for the Base class. Used to prevent creating a base ticket.
"""
sub_model_type = str(self._meta.sub_model_type).lower().replace(' ', '_')
if sub_model_type == 'asset':
return None
return sub_model_type
def get_model_type_choices():
choices = []
if apps.ready:
all_models = apps.get_models()
for model in all_models:
if(
( isinstance(model, AssetBase) or issubclass(model, AssetBase) )
and AssetBase._meta.sub_model_type != 'asset'
):
choices += [ (model._meta.sub_model_type, model._meta.verbose_name) ]
return choices
asset_type = models.CharField(
blank = True,
choices = get_model_type_choices,
default = Meta.sub_model_type,
help_text = 'Asset Type. (derived from asset model)',
max_length = 30,
null = False,
validators = [
validate_not_null
],
verbose_name = 'Asset Type',
)
created = AutoCreatedField(
editable = True,
)
modified = AutoLastModifiedField()
page_layout: list = [
{
"name": "Details",
"slug": "details",
"sections": [
{
"layout": "double",
"left": [
'organization',
'asset_type',
'asset_number',
'serial_number',
],
"right": [
'model_notes',
'created',
'modified',
]
}
]
},
{
"name": "Knowledge Base",
"slug": "kb_articles",
"sections": [
{
"layout": "table",
"field": "knowledge_base",
}
]
},
{
"name": "Tickets",
"slug": "tickets",
"sections": [
{
"layout": "table",
"field": "tickets",
}
],
},
{
"name": "Notes",
"slug": "notes",
"sections": []
},
]
table_fields: list = [
'id',
{
"field": "display_name",
"type": "link",
"key": "_self"
},
'asset_type',
'asset_number',
'serial_number',
'organization',
'created'
]
def __str__(self):
return self.asset_type + ' - ' + self.asset_number
def get_related_field_name(self) -> str:
meta = getattr(self, '_meta')
for related_object in getattr(meta, 'related_objects', []):
if not issubclass(related_object.related_model, self._base_model):
continue
if getattr(self, related_object.name, None):
if(
not str(related_object.name).endswith('history')
and not str(related_object.name).endswith('notes')
):
return related_object.name
return ''
def get_related_model(self):
"""Recursive model Fetch
Returns the lowest model found in a chain of inherited models.
Args:
model (models.Model, optional): Model to fetch the child model from. Defaults to None.
Returns:
models.Model: Lowset model found in inherited model chain
"""
related_model_name = self.get_related_field_name()
related_model = getattr(self, related_model_name, None)
if related_model_name == '':
related_model = None
elif related_model is None:
related_model = self
elif hasattr(related_model, 'get_related_field_name'):
if related_model.get_related_field_name() != '':
related_model = related_model.get_related_model()
return related_model
def get_url( self, request = None ) -> str:
kwargs = self.get_url_kwargs()
url_path_name = '_api_v2_asset_sub'
if self._meta.sub_model_type == 'asset':
url_path_name = '_api_v2_asset'
if request:
return reverse(f"v2:accounting:{url_path_name}-detail", request=request, kwargs = kwargs )
return reverse(f"v2:accounting:{url_path_name}-detail", kwargs = kwargs )
def get_url_kwargs(self) -> dict:
kwargs = {
'asset_model': self.asset_type,
}
if self._meta.sub_model_type == 'asset':
kwargs = {}
if self.id:
kwargs.update({
'pk': self.id
})
return kwargs
def save(self, force_insert=False, force_update=False, using=None, update_fields=None):
related_model = self.get_related_model()
if related_model is None:
related_model = self
if self.asset_type != str(related_model._meta.sub_model_type).lower().replace(' ', '_'):
self.asset_type = str(related_model._meta.sub_model_type).lower().replace(' ', '_')
super().save(force_insert=force_insert, force_update=force_update, using=using, update_fields=update_fields)
def save_history(self, before: dict, after: dict) -> bool:
from accounting.models.asset_base_history import AssetBaseAuditHistory
history = super().save_history(
before = before,
after = after,
history_model = AssetBaseAuditHistory
)
return history