Class Aggregate

Override the default save method to enforce permissions.

Overrides: django.db.models.base.Model.save

Override the default delete method to enforce permissions.

Overrides: django.db.models.base.Model.delete

Checks whether the aggregate is available or not.

Returns:

True if the aggregate is available, False otherwise.

Get the prefix to append to the beginning of url names when getting default urls.

By default this returns the application name.

Get the URL to use when deleting the project from the Aggregate List. This function will first check if there is a URL defined as <app_label>_aggregate_delete and return that if it exists, attaching "?next=<next>" to the end of the URL.

Parameters:

• next - URL to redirect to after deleting object.

Returns:

URL to go to when requesting the aggregate be deleted.

Gives the aggregate a chance to request additional information for a project. This method should return a URL to redirect to where the user can create or update the additional information the aggregate needs. When done, the view at that URL should use the give_permission function to give the project the "can_use_aggregate" permission:

   from expedient.common.permissions.shortcuts import                 give_permission_to
   
   give_permission_to("can_use_aggregate", self.as_leaf_class(), project)

and then it should redirect to next.

If no extra information is needed, this function can return next, instead of a custom URL, but it still needs to give the project the "can_use_aggregate" permission.

Unless overridden in a subclass, this function will look for a url with name <app_name>_aggregate_project_add by reversing the name with it parameters 'agg_id' and 'proj_id'. It will append '?next=<next>' to the URL if found. Otherwise, it simply gives the permission to the project and returns next.

Similar to add_to_project but does the reverse, deleting the permission from the project using:

   from expedient.common.permissions.shortcuts import                 delete_permission
       
   delete_permission("can_use_aggregate", self.as_leaf_class(), project)

and then redirecting to next. Additionally, if not overridden, this function stops all slices in the project before removing the aggregate. Subclasses should also stop slices.

Works exactly the same as remove_from_project but for a slice. It stops the slice if not overridden. Subclasses should stop the slice before removing the permission.

Works exactly the same as remove_from_project but for a user. Does not stop any slices.

Start the slice in the actual resources.

Subclasses overriding this method should call the parent class to ensure permission checks.

Take out the resource reservation from the aggregates.

Subclasses overriding this method should call the parent class to ensure permission checks.

Overrides: common.extendable.models.Extendable.objects

information

Value:

''' No information available. '''

dummyaggregate

Value:

<django.db.models.fields.related.SingleRelatedObjectDescriptor object at 0x9a544cc>

geniaggregate

Value:

<django.db.models.fields.related.SingleRelatedObjectDescriptor object at 0x8fafacc>

openflowaggregate

Value:

<django.db.models.fields.related.SingleRelatedObjectDescriptor object at 0x8f74b8c>

resource_set

Value:

<django.db.models.fields.related.ForeignRelatedObjectsDescriptor objec t at 0x8d891ac>

name

Type:

str

Value:

models.CharField(max_length= 200, unique= True, help_text= "Use a uniq ue name for this aggregate.")

logo

Type:

models.ImageField

Value:

models.ImageField('Logo', upload_to= settings.AGGREGATE_LOGOS_DIR, edi table= False, blank= True, null= True, help_text= "Select an optional logo.")

location

Type:

a string that is understandable by Google Maps.

Value:

models.CharField("Geographic Location", max_length= 200, default= "", help_text= "This should be a location that can be found using " "Googl e Maps")

available

Type:

bool

Value:

models.BooleanField("Available", default= True, help_text= "Do you wan t to make this\ aggregate available for others to use?")

managers

Get Method:

_get_managers(self) - Gets the list of users who have the "can_edit_aggregate" permission for this aggregate as a QuerySet of User objects.

slice_set

Get Method:

_get_slice_set(self) - Gets the list of slices allowed to use the aggregate