Fixed #31262 -- Added support for mappings on model fields and ChoiceField's choices.

docs/topics/db/managers.txt

@@ -154,9 +154,7 @@ For example::
     class Person(models.Model):
         first_name = models.CharField(max_length=50)
         last_name = models.CharField(max_length=50)
-        role = models.CharField(
-            max_length=1, choices=[("A", _("Author")), ("E", _("Editor"))]
-        )
+        role = models.CharField(max_length=1, choices={"A": _("Author"), "E": _("Editor")})
         people = models.Manager()
         authors = AuthorManager()
         editors = EditorManager()
@@ -259,9 +257,7 @@ custom ``QuerySet`` if you also implement them on the ``Manager``::
     class Person(models.Model):
         first_name = models.CharField(max_length=50)
         last_name = models.CharField(max_length=50)
-        role = models.CharField(
-            max_length=1, choices=[("A", _("Author")), ("E", _("Editor"))]
-        )
+        role = models.CharField(max_length=1, choices={"A": _("Author"), "E": _("Editor")})
         people = PersonManager()
 
 This example allows you to call both ``authors()`` and ``editors()`` directly from

docs/topics/db/models.txt

@@ -185,11 +185,11 @@ ones:
 
 
         class Person(models.Model):
-            SHIRT_SIZES = [
-                ("S", "Small"),
-                ("M", "Medium"),
-                ("L", "Large"),
-            ]
+            SHIRT_SIZES = {
+                "S": "Small",
+                "M": "Medium",
+                "L": "Large",
+            }
             name = models.CharField(max_length=60)
             shirt_size = models.CharField(max_length=1, choices=SHIRT_SIZES)