ImageFile

class database.models.ImageFile(*args, **kwargs)

Bases: database.models.file.File

A manifestation of a SourceInstantiation as an digital image file.

Manifests one and only one SourceInstantiation.

Generated by an Encoder and validated against a SourceInstantiation by a Validator.

file_type

models.CharField – The format of this ImageFile

file_size

models.PositiveIntegerField – The size of the this ImageFile in bytes

version

models.CharField – The version of the encoding schema of this ImageFile

encoding_date

models.DateTimeField – The date this ImageFile was encoded

encoded_with

models.ForeignKey – A reference to the Encoder of this ImageFile

validated_by

models.ForeignKey – A reference to the Validator of this ImageFile

extra_metadata

django.contrib.postgres.fields.JSONField – Any extra metadata associated with this ImageFile

manifests

ForeignKey – The SourceInstantiation manifested by this ImageFile

files

models.FileField – The path to the actual files stored on disk

See also

database.models.File

The super class of ImageFile

database.models.CustomBaseModel, database.models.SourceInstantiation, database.models.Encoder, database.models.Validator

Attributes Summary

encoded_with	Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.
files	A wrapper for a deferred-loading field.
id	A wrapper for a deferred-loading field.
manifests	Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.
manifests_id	A wrapper for a deferred-loading field.
objects
pages	Gets the number of images, which is equal to the number of pages
validated_by	Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

Methods Summary

get_next_by_date_created(*[, field, is_next])
get_next_by_date_updated(*[, field, is_next])
get_previous_by_date_created(*[, field, is_next])
get_previous_by_date_updated(*[, field, is_next])

Attributes Documentation

encoded_with

Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example:

class Child(Model):
    parent = ForeignKey(Parent, related_name='children')

Child.parent is a ForwardManyToOneDescriptor instance.

files

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

manifests

Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example:

class Child(Model):
    parent = ForeignKey(Parent, related_name='children')

Child.parent is a ForwardManyToOneDescriptor instance.

manifests_id

A wrapper for a deferred-loading field. When the value is read from this object the first time, the query is executed.

objects = <django.db.models.manager.Manager object>

pages

Gets the number of images, which is equal to the number of pages

validated_by

Accessor to the related object on the forward side of a many-to-one or one-to-one (via ForwardOneToOneDescriptor subclass) relation.

In the example:

class Child(Model):
    parent = ForeignKey(Parent, related_name='children')

Child.parent is a ForwardManyToOneDescriptor instance.

Methods Documentation

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

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

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

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