InvokeAI/invokeai/app/services/shared/pagination.py

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from typing import Generic, TypeVar
from pydantic import BaseModel, Field
from pydantic.generics import GenericModel
GenericBaseModel = TypeVar("GenericBaseModel", bound=BaseModel)
class CursorPaginatedResults(GenericModel, Generic[GenericBaseModel]):
"""
Cursor-paginated results
Generic must be a Pydantic model
"""
limit: int = Field(..., description="Limit of items to get")
has_more: bool = Field(..., description="Whether there are more items available")
items: list[GenericBaseModel] = Field(..., description="Items")
class OffsetPaginatedResults(GenericModel, Generic[GenericBaseModel]):
"""
Offset-paginated results
Generic must be a Pydantic model
"""
limit: int = Field(description="Limit of items to get")
offset: int = Field(description="Offset from which to retrieve items")
total: int = Field(description="Total number of items in result")
items: list[GenericBaseModel] = Field(description="Items")
class PaginatedResults(GenericModel, Generic[GenericBaseModel]):
"""
Paginated results
Generic must be a Pydantic model
"""
page: int = Field(description="Current Page")
pages: int = Field(description="Total number of pages")
per_page: int = Field(description="Number of items per page")
total: int = Field(description="Total number of items in result")
items: list[GenericBaseModel] = Field(description="Items")