Meke sure always return a list

README.md

@@ -21,7 +21,16 @@ class UserModel(BaseModel):
     friends: list[int]
     active: bool = True
 
-request_data = Multidict(('name', 'John Doe'), ('friends', '2'), ('friends', '3')}
+# This is just an example.
+# You would use the request POST data of your web framework instead,
+# for example `request_data = request.form` in Flask
+from multidict import MultiDict
+request_data = MultiDict([
+  ("name", "John Doe"),
+  ("friends", "2"),
+  ("friends", "3"),
+])
+
 
 # The magic
 form = UserModel.as_form(request_data, object=None)

example.py

@@ -0,0 +1,30 @@
+from fodantic import formable
+from pydantic import BaseModel
+
+@formable
+class UserModel(BaseModel):
+    name: str
+    friends: list[int]
+    active: bool = True
+
+# This is just an example.
+# You would use the request POST data of your web framework instead,
+# for example `request_data = request.form` in Flask
+from multidict import MultiDict
+request_data = MultiDict([
+  ("name", "John Doe"),
+  ("friends", "2"),
+  ("friends", "3"),
+])
+
+# The magic
+form = UserModel.as_form(request_data, object=None)
+
+print(form)
+#> UserModel.as_form(name='John Doe', friends=[2, 3], active=False)
+print(form.fields["name"].value)
+#> John Doe
+print(form.fields["name"].error)
+#> None
+print(form.save())  # Can also update the `object` passed as an argument
+#> {'name': 'John Doe', 'friends': [2, 3], 'active': False}

pyproject.toml

@@ -4,7 +4,7 @@ requires = ["setuptools"]
 
 [project]
 name = "fodantic"
-version = "0.0.4"
+version = "0.0.5"
 description = "Pydantic-based HTTP forms"
 authors = [
   {name = "Juan-Pablo Scaletti", email = "[email protected]"},

src/fodantic/wrappers.py

@@ -18,12 +18,23 @@ def __init__(self, source: t.Any):
 
         """
         self.source: t.Any = {} if source is None else source
-        self.get = self._find_get_method()
-        self.getall = self._find_getall_method()
+        self._get_method = self._find_get_method()
+        self._getall_method = self._find_getall_method()
 
     def __contains__(self, __name: str) -> bool:
         return __name in self.source
 
+    def get(self, key, *args, **kwargs):
+        return self._get_method(key, *args, **kwargs)
+
+    def getall(self, key, *args, **kwargs):
+        """This method always returns a list, even if the
+        key doesn't exists."""
+        try:
+            return self._getall_method(key, *args, **kwargs)
+        except KeyError:
+            return []
+
     def _find_get_method(self) -> t.Callable[[str], t.Any]:
         if hasattr(self.source, "get"):
             return self.source.get