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The following commit(s) were added to refs/heads/main by this push:
new c056c86 Add a list of strings form type
c056c86 is described below
commit c056c86e71b32cecc1cd87b23b3701b50de7807d
Author: Sean B. Palmer <[email protected]>
AuthorDate: Tue Nov 11 17:27:53 2025 +0000
Add a list of strings form type
---
atr/form.py | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/atr/form.py b/atr/form.py
index 50683a7..d8fa7d2 100644
--- a/atr/form.py
+++ b/atr/form.py
@@ -381,6 +381,14 @@ def to_int(v: Any) -> int:
raise ValueError(f"Invalid integer value: {v!r}")
+def to_str_list(v: Any) -> list[str]:
+ if isinstance(v, list):
+ return [str(item) for item in v]
+ if isinstance(v, str):
+ return [v]
+ raise ValueError(f"Expected a string or list of strings, got
{type(v).__name__}")
+
+
# Validator types come before other functions
# We must not use the "type" keyword here, otherwise Pydantic complains
@@ -405,6 +413,12 @@ FileList = Annotated[
pydantic.Field(default_factory=list),
]
+StrList = Annotated[
+ list[str],
+ functional_validators.BeforeValidator(to_str_list),
+ pydantic.Field(default_factory=list),
+]
+
Filename = Annotated[
pathlib.Path | None,
functional_validators.BeforeValidator(to_filename),
@@ -483,10 +497,20 @@ def _render_widget( # noqa: C901
case Widget.CHECKBOXES:
choices = _get_choices(field_info)
- if isinstance(field_value, set):
+
+ if (not choices) and isinstance(field_value, list) and field_value:
+ # Render list[str] as checkboxes
+ if isinstance(field_value[0], tuple) and (len(field_value[0])
== 2):
+ choices = field_value
+ selected_values = []
+ else:
+ choices = [(str(v), str(v)) for v in field_value]
+ selected_values = field_value
+ elif isinstance(field_value, set):
selected_values = [item.value for item in field_value]
else:
selected_values = field_value if isinstance(field_value, list)
else []
+
checkboxes = []
for val, label in choices:
checkbox_id = f"{field_name}_{val}"
@@ -699,8 +723,13 @@ def _get_widget_type(field_info:
pydantic.fields.FieldInfo) -> Widget: # noqa:
if args:
first_arg = args[0]
if get_origin(first_arg) is Literal:
+ # Literal[str, ...]
+ return Widget.CHECKBOXES
+ if first_arg is str:
+ # StrList
return Widget.CHECKBOXES
if first_arg is datastructures.FileStorage:
+ # FileList
return Widget.FILES
if hasattr(first_arg, "__value__"):
inner = first_arg.__value__
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