devplacepy/docs_api/_shared.py

@@ -38,6 +38,7 @@ def field(
     example="",
     description="",
     options=None,
+    nullable=False,
 ):
     spec = {
         "name": name,
@@ -46,6 +47,7 @@ def field(
         "required": required,
         "example": example,
         "description": description,
+        "nullable": nullable,
     }
     if options:
         spec["options"] = list(options)

devplacepy/docs_examples.py

@@ -39,7 +39,15 @@ def _unwrap_optional(annotation):
     return annotation
 
 
-def _value(name, annotation, stack):
+def _is_optional(annotation):
+    if get_origin(annotation) is Union:
+        return type(None) in get_args(annotation)
+    return False
+
+
+def _value(name, annotation, stack, is_nullable=False):
+    if is_nullable:
+        return None
     annotation = _unwrap_optional(annotation)
     origin = get_origin(annotation)
     if origin in (list, set, tuple):
@@ -71,7 +79,8 @@ def _from_model(model, stack):
     stack = stack | {model}
     example = {}
     for name, info in model.model_fields.items():
-        example[name] = _value(name, info.annotation, stack)
+        is_nullable = _is_optional(info.annotation)
+        example[name] = _value(name, info.annotation, stack, is_nullable)
     return example
 
 

devplacepy/static/css/docs.css

@@ -218,6 +218,16 @@
     font-weight: 700;
 }
 
+.param-nullable {
+    font-size: 0.625rem;
+    text-transform: uppercase;
+    letter-spacing: 0.05em;
+    color: var(--text-muted);
+    border: 1px dashed var(--border);
+    border-radius: 999px;
+    padding: 0.05rem 0.4rem;
+}
+
 .param-loc {
     font-size: 0.625rem;
     text-transform: uppercase;

devplacepy/static/js/ApiTester.js

@@ -139,6 +139,7 @@ export class ApiTester {
             const label = this.el("div", { class: "param-label" }, [
                 this.el("span", { class: "param-name", text: param.name }),
                 param.required ? this.el("span", { class: "param-required", text: "*" }) : null,
+                param.nullable ? this.el("span", { class: "param-nullable", text: "nullable" }) : null,
                 this.el("span", { class: "param-loc param-loc-" + param.location, text: param.location }),
             ]);
             const allowed = param.type === "enum" && param.options && param.options.length

tests/unit/test_docs_nullable.py

@@ -0,0 +1,59 @@
+# retoor <retoor@molodetz.nl>
+
+from typing import Optional
+
+from pydantic import BaseModel
+
+from devplacepy.docs_api._shared import field
+from devplacepy.docs_examples import _is_optional, schema_example
+
+
+def test_field_nullable_parameter():
+    f = field("bio", "query", "string", False, "", "User biography", nullable=True)
+    assert f["nullable"] is True
+
+    f2 = field("username", "path", "string", True, "alice", "Target username")
+    assert f2["nullable"] is False
+
+
+def test_is_optional_optional_type():
+    assert _is_optional(Optional[str]) is True
+    assert _is_optional(Optional[int]) is True
+    assert _is_optional(Optional[list[str]]) is True
+
+
+def test_is_optional_non_optional():
+    assert _is_optional(str) is False
+    assert _is_optional(int) is False
+    assert _is_optional(list[str]) is False
+    assert _is_optional(dict) is False
+
+
+def test_schema_example_nullable_fields():
+    class NullableModel(BaseModel):
+        name: str
+        bio: Optional[str] = None
+        age: int
+        score: Optional[int] = None
+        tags: Optional[list[str]] = None
+
+    result = schema_example(NullableModel)
+
+    assert result["name"] == "string"
+    assert result["age"] == 0
+    assert result["bio"] is None
+    assert result["score"] is None
+    assert result["tags"] is None
+
+
+def test_schema_example_non_nullable_fields_unaffected():
+    class StrictModel(BaseModel):
+        x: str
+        y: int
+        z: bool
+
+    result = schema_example(StrictModel)
+
+    assert result["x"] == "string"
+    assert result["y"] == 0
+    assert result["z"] is False