Models¶

Models for the mde-viewer app.

Models:

Service(id, dataset, time_range)

param id:: Primary key: ID

ServiceLayer(*args, **kwargs)

A variable that can be visualized by a service

class mde_viewer.models.Service(id, dataset, time_range)¶

Bases: Model

Parameters:

id (BigAutoField) – Primary key: ID
time_range (DateTimeRangeField) – Time range. Minimum and maximum time step of the service

Relationship fields:

Parameters:: dataset (ForeignKey to Dataset) – Dataset. The dataset that this service corresponds to. (related name: service)

Reverse relationships:

Parameters:: servicelayer (Reverse ForeignKey from ServiceLayer) – All service layers of this service (related name of service)

Miscellaneous:

`DoesNotExist`
`MultipleObjectsReturned`

Model Fields:

`dataset`	Type: `ForeignKey` to `Dataset`
`id`	Type: `BigAutoField`
`time_range`	Type: `DateTimeRangeField`

Attributes:

`dataset_id`	Internal field, use `dataset` instead.
`objects`
`servicelayer_set`	Type: Reverse `ForeignKey` from `ServiceLayer`

exception DoesNotExist¶: Bases: ObjectDoesNotExist

exception MultipleObjectsReturned¶: Bases: MultipleObjectsReturned

dataset¶

Type: ForeignKey to Dataset

Dataset. The dataset that this service corresponds to. (related name: service)

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')

dataset_id¶: Internal field, use dataset instead.

id¶

Type: BigAutoField

Primary key: ID

A wrapper for a deferred-loading field. When the value is read from this

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

servicelayer_set¶

Type: Reverse ForeignKey from ServiceLayer

All service layers of this service (related name of service)

Accessor to the related objects manager on the reverse side of a many-to-one relation.

In the example:

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

Parent.children is a ReverseManyToOneDescriptor instance.

Most of the implementation is delegated to a dynamically defined manager

time_range¶

Type: DateTimeRangeField

Time range. Minimum and maximum time step of the service

A wrapper for a deferred-loading field. When the value is read from this

class mde_viewer.models.ServiceLayer(*args, **kwargs)¶

Bases: Model

A variable that can be visualized by a service

Parameters:

id (BigAutoField) – Primary key: ID
name (CharField) – Name
description (TextField) – Description. A more verbose description of the layer.

Relationship fields:

Parameters:: service (ForeignKey to Service) – Service (related name: servicelayer)

Miscellaneous:

`DoesNotExist`
`MultipleObjectsReturned`

Model Fields:

`description`	Type: `TextField`
`id`	Type: `BigAutoField`
`name`	Type: `CharField`
`service`	Type: `ForeignKey` to `Service`

Attributes:

`objects`
`service_id`	Internal field, use `service` instead.

exception DoesNotExist¶: Bases: ObjectDoesNotExist

exception MultipleObjectsReturned¶: Bases: MultipleObjectsReturned

description¶

Type: TextField

Description. A more verbose description of the layer.

A wrapper for a deferred-loading field. When the value is read from this

id¶

Type: BigAutoField

Primary key: ID

A wrapper for a deferred-loading field. When the value is read from this

name¶

Type: CharField

Name

A wrapper for a deferred-loading field. When the value is read from this

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

service¶

Type: ForeignKey to Service

Service (related name: servicelayer)

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')

service_id¶: Internal field, use service instead.