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Add index_of_first_element_on_page, index_of_last_element_on_page

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Roman Inflianskas 2018-11-23 15:08:18 +03:00 • committed by Roman Inflianskas
parent d8fdbb853c
commit 8db8f70113
1 changed files with 24 additions and 1 deletions
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25
aiogram/utils/parts.py
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@ -43,6 +43,28 @@ def safe_split_text(text: str, length: int = MAX_MESSAGE_LENGTH) -> typing.List[
return parts
def index_of_first_element_on_page(page: int = 0, limit: int = 10) -> int:
"""
Index of first element on page
:param page: int number of page (default: 0)
:param limit: int items per page (default: 10)
:return: int index of first element on page
"""
return page * limit
def index_of_last_element_on_page(page: int = 0, limit: int = 10) -> int:
"""
Index of last element on page
:param page: int number of page (default: 0)
:param limit: int items per page (default: 10)
:return: int index of last element on page
"""
return index_of_last_element_on_page(page=page, limit=limit) + limit
def paginate(data: typing.Iterable, page: int = 0, limit: int = 10) -> typing.Iterable:
"""
Slice data over pages
@ -56,4 +78,5 @@ def paginate(data: typing.Iterable, page: int = 0, limit: int = 10) -> typing.It
:return: sliced object
:rtype: :obj:`typing.Iterable`
"""
return data[page * limit:page * limit + limit]
return data[index_of_first_element_on_page(page=page, limit=limit):
index_of_last_element_on_page(page=page, limit=limit)]