docs(examples): add form_choices usage to peewee_simple example

Author: hasansezertasan

examples/peewee_simple/main.py

@@ -42,6 +42,7 @@ class Post(BaseModel):
     title = CharField(max_length=120)
     text = peewee.TextField(null=False)
     date = peewee.DateTimeField()
+    status = CharField(max_length=20, default="draft")
 
     user = peewee.ForeignKeyField(User)
 
@@ -70,6 +71,15 @@ class PostAdmin(ModelView):
 
     form_ajax_refs = {"user": {"fields": (User.username, "email")}}
 
+    form_choices = {
+        "status": [
+            ("draft", "Draft"),
+            ("review", "In Review"),
+            ("published", "Published"),
+            ("archived", "Archived"),
+        ]
+    }
+
 
 class Book(BaseModel):
     isbn = CharField(max_length=13, primary_key=True)
@@ -131,7 +141,9 @@ def index():
 
     # Create tables first
     with db:
-        db.drop_tables([BookCategory, Post, UserInfo, Book, Category, User], safe=True)
+        db.drop_tables(
+            [BookCategory, Post, UserInfo, Book, Category, User], safe=True
+        )
         db.create_tables(
             [User, UserInfo, Post, Book, Category, BookCategory], safe=True
         )