mirror of https://github.com/alerta/alerta.git
34 lines
979 B
Python
34 lines
979 B
Python
from flask import current_app
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from werkzeug.datastructures import MultiDict
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from alerta.exceptions import ApiError
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class Page:
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def __init__(self, page: int = 1, page_size: int = None, items: int = 0) -> None:
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self.page = page
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self.page_size = page_size or current_app.config['DEFAULT_PAGE_SIZE']
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self.items = items
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if items and self.page > self.pages or self.page < 1:
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raise ApiError(f'page out of range: 1-{self.pages}', 416)
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@staticmethod
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def from_params(params: MultiDict, items: int) -> 'Page':
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# page, page-size, limit (deprecated)
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page = params.get('page', 1, int)
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limit = params.get('limit', 0, int)
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page_size = params.get('page-size', limit, int)
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return Page(page, page_size, items)
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@property
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def pages(self) -> int:
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return ((self.items - 1) // self.page_size) + 1
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@property
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def has_more(self) -> bool:
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return self.page < self.pages
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