diff --git a/docs/en/docs/how-to/migrate-from-pydantic-v1-to-pydantic-v2.md b/docs/en/docs/how-to/migrate-from-pydantic-v1-to-pydantic-v2.md index c5ae327fa..070eff931 100644 --- a/docs/en/docs/how-to/migrate-from-pydantic-v1-to-pydantic-v2.md +++ b/docs/en/docs/how-to/migrate-from-pydantic-v1-to-pydantic-v2.md @@ -66,11 +66,47 @@ Have in mind that as the Pydantic team no longer supports Pydantic v1 in recent ### Pydantic v1 and v2 on the same app { #pydantic-v1-and-v2-on-the-same-app } -It's **not possible** to have a model of Pydantic v2 with its own fields defined as Pydantic v1 models or vice versa. +It's **not supported** by Pydantic to have a model of Pydantic v2 with its own fields defined as Pydantic v1 models or vice versa. + +```mermaid +graph TB + subgraph "❌ Not Supported" + direction TB + subgraph V2["Pydantic v2 Model"] + V1Field["Pydantic v1 Model"] + end + subgraph V1["Pydantic v1 Model"] + V2Field["Pydantic v2 Model"] + end + end + + style V2 fill:#f9fff3 + style V1 fill:#fff6f0 + style V1Field fill:#fff6f0 + style V2Field fill:#f9fff3 +``` ...but, you can have separated models using Pydantic v1 and v2 in the same app. -In some cases, it's even possible to have both Pydantic v1 and v2 models in the same **path operation**: +```mermaid +graph TB + subgraph "✅ Supported" + direction TB + subgraph V2["Pydantic v2 Model"] + V2Field["Pydantic v2 Model"] + end + subgraph V1["Pydantic v1 Model"] + V1Field["Pydantic v1 Model"] + end + end + + style V2 fill:#f9fff3 + style V1 fill:#fff6f0 + style V1Field fill:#fff6f0 + style V2Field fill:#f9fff3 +``` + +In some cases, it's even possible to have both Pydantic v1 and v2 models in the same **path operation** in your FastAPI app: {* ../../docs_src/pydantic_v1_in_v2/tutorial003_an_py310.py hl[2:3,6,12,21:22] *}