Pydantic Classes Generator

This code generator produces Pydantic classes, which represent the entities and relationships of a B-UML model. These Pydantic classes can be utilized by other code generators to generate code that uses Pydantic classes, such as REST API Generator and Backend Generator.

Let’s generate the code for the Pydantic classes of our Structural model example B-UML model example. You should create a PydanticGenerator object, provide the B-UML model, and use the generate method as follows:

from besser.generators.Pydantic_classes import PydanticGenerator

generator: PydanticGenerator = Pydantic_Generator(model=library_model)
generator.generate()

Upon executing this code, a pydantic_classes.py file containing the Pydantic models will be generated. in the <<current_directory>>/output folder and it will look as follows.

from datetime import datetime, date
from typing import List, Optional, Union,Set
from pydantic import BaseModel

############################################
#
# The classes are defined here
#
############################################

class BookCreate(BaseModel):
    pages: int
    release: datetime
    title: str
    authors: Optional[List[Union["AuthorCreate", int]]] = None  # N:M Relationship
    library_id: int

class AuthorCreate(BaseModel):
    name: str
    email: str
    books: Optional[List[Union["BookCreate", int]]] = None  # N:M Relationship

class LibraryCreate(BaseModel):
    address: str
    name: str