44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
from typing import TypedDict, Tuple
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from flask import current_app
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from flask_sqlalchemy import BaseQuery
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from sqlalchemy import desc
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class PaginationResponse(TypedDict):
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items: list
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max_pages: int
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def order_by_column_name(query: BaseQuery, model_field: str, order_by_col_name: str) -> BaseQuery:
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if order_by_col_name is not None:
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if order_by_col_name == 'asc':
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query = query.order_by(model_field)
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elif order_by_col_name == 'desc':
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query = query.order_by(desc(model_field))
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return query
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def paginate_models(page: str, query: BaseQuery, per_page = 10) -> PaginationResponse or Tuple[dict, int]:
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default_page = 1
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if page is not None:
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try:
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page = int(page)
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except ValueError:
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return {"error": f"Invalid page! Page must be integer!"}, 400
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query = query.paginate(page=page, per_page=per_page, error_out=False)
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else:
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query = query.paginate(page=default_page, per_page=per_page, error_out=False)
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return {
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'items': query.items,
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'max_pages': query.pages
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}
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def is_allowed_extensions(filename: str):
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return '.' in filename and \
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filename.rsplit('.', 1)[1].lower() in current_app.config['ALLOWED_EXTENSIONS']
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