versions.VersionPreview

Model Info

Key

Value

Model Name

VersionPreview

Verbose Name

version preview

Verbose Name Plural

version previews

Docstring

VersionPreview(id, created, modified, version, position, sizes, colors)

Is Abstract

False

Is Proxy

False

Is Managed

True

Ordering

(‘position’, ‘created’)

Permissions

[]

Default Permissions

(‘add’, ‘change’, ‘delete’, ‘view’)

Indexes

[<LongNameIndex: fields=[‘version’] name=’version_previews_version_id_fk_versions_id’>, <Index: fields=[‘version’, ‘position’, ‘created’] name=’version_position_created_idx’>]

Constraints

[]

Database Table

version_previews

Base Manager

None

Default Manager

None

File

/data/olympia/src/olympia/versions/models.py

Starting Line Number

1315

Method Resolution Order

(<class ‘olympia.versions.models.VersionPreview’>, <class ‘olympia.amo.models.BasePreview’>, <class ‘olympia.amo.models.ModelBase’>, <class ‘olympia.amo.models.SaveUpdateMixin’>, <class ‘django.db.models.base.Model’>, <class ‘django.db.models.utils.AltersData’>, <class ‘object’>)

Fields

Field Name

Field Type

Database Column

Database Type

Verbose Name

colors

JSONField

colors

json

colors

created

DateTimeField

created

datetime(6)

created

id (pk)

AutoField

id

integer AUTO_INCREMENT

ID

modified

DateTimeField

modified

datetime(6)

modified

position

IntegerField

position

integer

position

sizes

JSONField

sizes

json

sizes

version

ForeignKey

version_id

integer UNSIGNED

version

Relations

Field Name

Field Type

Database Column

Database Type

Related Model

Related Name

version

ForeignKey

version_id

integer UNSIGNED

versions.Version

previews

fields_reverse_relation=[]

Methods

Other Methods

Method Name

Signature

delete_preview_files

(sender, instance, **kw)

get_admin_absolute_url

(self)

get_admin_url_path

(self)

get_format

(self, for_size)

get_next_by_created

(self, *, field=<django.db.models.fields.DateTimeField: created>, is_next=True, **kwargs)

get_next_by_modified

(self, *, field=<django.db.models.fields.DateTimeField: modified>, is_next=True, **kwargs)

get_previous_by_created

(self, *, field=<django.db.models.fields.DateTimeField: created>, is_next=False, **kwargs)

get_previous_by_modified

(self, *, field=<django.db.models.fields.DateTimeField: modified>, is_next=False, **kwargs)

get_unfiltered_manager

()

reload

(self)

serializable_reference

(self)

update

(self, **kw)

Private Methods

Method Name

Signature

_get_field_value_map

(self, meta, exclude=None)

_image_path

(self, folder, file_ext)

_image_url

(self, folder, file_ext)

Custom Managers

default

Class: ManagerBase

*Base for all managers in AMO.

Returns BaseQuerySets.

If a model has translated fields, they’ll be attached through a transform function.*

Custom Methods

transform(self, fn)

Custom QuerySet

Class: BaseQuerySet

Represent a lazy database lookup for a set of objects.

Custom Methods
no_transforms(self)
only_translations(self)

Remove all transforms except translations.

optimized_count(self)

*Slightly optimized count() for cases where there is a DISTINCT in the queryset.

When a count() call is made on a queryset that has a distinct, that causes django to run the full SELECT (including all fields, distinct, ordering etc) in a subquery and then COUNT() on the result of that subquery, which is costly/innefficient. That’s tracked in https://code.djangoproject.com/ticket/30685. We can’t easily fix the fact that there is a subquery, but we can avoid selecting all fields and ordering in that subquery needlessly.*

pop_transforms(self)
transform(self, fn)

objects

Class: ManagerBase

*Base for all managers in AMO.

Returns BaseQuerySets.

If a model has translated fields, they’ll be attached through a transform function.*

Custom Methods

transform(self, fn)

Custom QuerySet

Class: BaseQuerySet

Represent a lazy database lookup for a set of objects.

Custom Methods
no_transforms(self)
only_translations(self)

Remove all transforms except translations.

optimized_count(self)

*Slightly optimized count() for cases where there is a DISTINCT in the queryset.

When a count() call is made on a queryset that has a distinct, that causes django to run the full SELECT (including all fields, distinct, ordering etc) in a subquery and then COUNT() on the result of that subquery, which is costly/innefficient. That’s tracked in https://code.djangoproject.com/ticket/30685. We can’t easily fix the fact that there is a subquery, but we can avoid selecting all fields and ordering in that subquery needlessly.*

pop_transforms(self)
transform(self, fn)

!!! THIS DOCUMENT WAS AUTOGENERATED ON 2025-07-09 !!!