#33258: inconsistent use of () and [] for attributes in Admin class - Also class
variables
------------------------------------------+------------------------
Reporter: newearthmartin | Owner: nobody
Type: Bug | Status: new
Component: contrib.admin | Version: 3.2
Severity: Normal | Keywords: Admin
Triage Stage: Unreviewed | Has patch: 0
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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In Django's Admin class, most "lists" are initialized as tuples `()` while
two of them (`inlines` and `actions`)are initialized as lists `[]`
```
list_display = ('__str__',)
list_display_links = ()
list_filter = ()
...
list_editable = ()
search_fields = ()
...
inlines = []
...
actions = []
```
This is inconsistent.
And also there is a Since these are declared in the class, they are shared
among all instances if this value is not set.
I wanted to add an action to an admin subclass so I did
`MyAdmin.actions.append('some_action')` which added this action to all my
admins who had not set a new value to `actions`. While lists are more
semantically correct than tuples, tuples have the advantage of being
immutable, so they force users to reset the value every time.
So, two solutions:
- declare all these attributes as instance variables in the constructor.
Possibly setting them all as lists
- declare all these attributes as tuples, keeping them where they are
--
Ticket URL: <https://code.djangoproject.com/ticket/33258>
Django <https://code.djangoproject.com/>
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