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80c9d580eb
The Flask-Caching cache can now properly be configured from the config.py, and redis caching has experimentally been tested and confirmed to be working in theory. We also document that one may want to use CACHE_THRESHOLD to limit the maximum number of items in the simple cache.
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
import os.path
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from flask import abort
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from flask.config import Config
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from flask_assets import Environment
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from flask_caching import Cache
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from flask_debugtoolbar import DebugToolbarExtension
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from flask_sqlalchemy import BaseQuery, Pagination, SQLAlchemy
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assets = Environment()
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db = SQLAlchemy()
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toolbar = DebugToolbarExtension()
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cache = Cache()
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class LimitedPagination(Pagination):
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def __init__(self, actual_count, *args, **kwargs):
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self.actual_count = actual_count
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super().__init__(*args, **kwargs)
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def fix_paginate():
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def paginate_faste(self, page=1, per_page=50, max_page=None, step=5, count_query=None):
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if page < 1:
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abort(404)
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if max_page and page > max_page:
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abort(404)
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# Count all items
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if count_query is not None:
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total_query_count = count_query.scalar()
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else:
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total_query_count = self.count()
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actual_query_count = total_query_count
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if max_page:
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total_query_count = min(total_query_count, max_page * per_page)
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# Grab items on current page
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items = self.limit(per_page).offset((page - 1) * per_page).all()
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if not items and page != 1:
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abort(404)
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return LimitedPagination(actual_query_count, self, page, per_page, total_query_count,
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items)
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BaseQuery.paginate_faste = paginate_faste
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def _get_config():
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# Workaround to get an available config object before the app is initiallized
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# Only needed/used in top-level and class statements
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# https://stackoverflow.com/a/18138250/7597273
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root_path = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
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config = Config(root_path)
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config.from_object('config')
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return config
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config = _get_config()
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