models

management.models

Classes

PermissionsBase

Bases: Model

Base model for models that require permissions.

Functions

set_model_permissions() classmethod

Set model-level add permissions.

Source code in management/models.py

@classmethod
def set_model_permissions(cls):
    """Set model-level add permissions."""
    apply_add_permissions_to_standard_group(cls)

set_object_permissions()

Set object-level delete, change and view permissions.

Source code in management/models.py

def set_object_permissions(self):
    """Set object-level delete, change and view permissions."""
    delete, change, view, add = _get_perm_codenames(self.__class__)
    standard_group = Group.objects.get(name="Standard")
    anonymous_user = get_anonymous_user()

    # View permissions based on permissions level
    if self.visibility in ["public", "internal"]:
        assign_perm(view, standard_group, self)
        assign_perm(view, anonymous_user, self)
        if self.owner:
            remove_perm(view, self.owner, self)
    elif self.visibility == "private" and self.owner:
        remove_perm(view, standard_group, self)
        remove_perm(view, anonymous_user, self)
        if self.owner:
            assign_perm(view, self.owner, self)

    # Assign change and delete permissions for owner
    for perm in [change, delete]:
        remove_perm(perm, standard_group, self)
        remove_perm(perm, anonymous_user, self)
        if self.owner:
            assign_perm(perm, self.owner, self)

ThingsboardCredentials

Bases: Model

Credentials for Thingsboard integration.

User

Bases: AbstractUser

Custom user model.

All users are given staff status and added to the standard group.

Functions

_get_perm_codenames(model)

Helper function to get delete, change and view permission codenames for a given model.

Source code in management/models.py

def _get_perm_codenames(model):
    """Helper function to get delete, change and view permission codenames for a
    given model.
    """
    return (
        f"delete_{model._meta.model_name}",
        f"change_{model._meta.model_name}",
        f"view_{model._meta.model_name}",
        f"add_{model._meta.model_name}",
    )

apply_add_permissions_to_standard_group(model)

Apply model-level add permissions to the standard user group.

Parameters:

Name	Type	Description	Default
model	Model	Model to apply permissions to.	required

Source code in management/models.py

def apply_add_permissions_to_standard_group(model):
    """Apply model-level add permissions to the standard user group.

    Args:
        model (Model): Model to apply permissions to.

    """
    delete, change, view, add = _get_perm_codenames(model)
    standard_group = Group.objects.get(name="Standard")
    content_type = ContentType.objects.get_for_model(model)
    permission, created = Permission.objects.get_or_create(
        codename=add, content_type=content_type
    )
    standard_group.permissions.add(permission)