---
url: "https://vueda.dev/v3/reference/api/py/vueda.core.utils/ActionView.md"
title: "ActionView"
---

# ActionView

## Overview

Presents a fixed ``action`` to a permission check, delegating every other attribute
(``get_queryset()`` included) to the wrapped view unchanged.

A permission class reads ``view.action`` to decide which named permission a request needs --
for example ``list`` versus ``read`` for two actions that both use ``GET``. Wrapping the view
this way lets a caller check authorization for one specific action, independently of whatever
action the surrounding response is actually for, without mutating the wrapped view's own
``action`` attribute. ``get_queryset()``, reached through this wrapper, still runs as a bound
method of the wrapped view and reads that view's real ``action``, so it keeps building
whatever queryset the actual request would have built.

``__class__`` reports the wrapped view's own class rather than ``ActionView`` itself, so
``isinstance(action_view, ViewSet)`` is true and a viewset method invoked unbound with this
wrapper standing in for ``self`` (:func:`vueda.core.permissions.check_action_permission` does
exactly this for ``check_object_permissions``) can still reach its own base implementation
through a bare, zero-argument ``super()`` call -- that call requires ``self`` to appear as an
instance of the class defining the method, which this wrapper otherwise would not. Delegation
through ``__getattr__`` is what keeps that safe: a method reached that way still runs bound to
the real view, so this spoof only ever affects the one direct ``isinstance`` check, never which
object a nested call like ``get_queryset()`` actually runs against.

## `__init__` {#--init--}

### Signature {#--init---signature}

`__init__(view, action)`

#### Parameters {#--init---parameters}

| Name | Type | Required | Default | Description |
| --- | --- | --- | --- | --- |
| <span id="--init---param-view">view</span> |  | yes |  |  |
| <span id="--init---param-action">action</span> |  | yes |  |  |

### Source {#--init---source}

`server/vueda/core/utils.py:95`

## `action` {#action}

## Source

`server/vueda/core/utils.py:71`