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""" |
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byceps.util.templatefilters |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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Provide and register custom template filters. |
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:Copyright: 2006-2019 Jochen Kupperschmidt |
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:License: Modified BSD, see LICENSE for details. |
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""" |
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from datetime import datetime |
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from flask import current_app |
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from jinja2 import evalcontextfilter, Markup |
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from jinja2.filters import do_default, do_trim |
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from pytz import timezone, UTC |
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from .datetime import format as dateformat |
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from . import money |
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@evalcontextfilter |
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def dim(eval_ctx, value): |
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"""Render value in a way so that it looks dimmed.""" |
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dimmed = _dim(value) |
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return _wrap_markup_on_autoescape(eval_ctx, dimmed) |
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def _dim(value): |
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return f'<span class="dimmed">{value}</span>' |
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@evalcontextfilter |
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def fallback(eval_ctx, value, fallback='nicht angegeben'): |
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defaulted = do_trim(do_default(value, '', True)) |
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result = value if defaulted else _dim(fallback) |
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return _wrap_markup_on_autoescape(eval_ctx, result) |
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def _wrap_markup_on_autoescape(eval_ctx, value): |
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return Markup(value) if eval_ctx.autoescape else value |
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def separate_thousands(number: int) -> str: |
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"""Insert locale-specific characters to separate thousands.""" |
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return f'{number:n}' |
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def local_tz_to_utc(dt: datetime): |
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return (_get_timezone() |
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.localize(dt) |
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.astimezone(UTC) |
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# Keep SQLAlchemy from converting it to another zone. |
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.replace(tzinfo=None)) |
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def utc_to_local_tz(dt: datetime) -> datetime: |
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"""Convert naive date/time object from UTC to configured time zone.""" |
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tz = _get_timezone() |
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return UTC.localize(dt).astimezone(tz) |
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def _get_timezone(): |
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return timezone(current_app.config['TIMEZONE']) |
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def register(app): |
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"""Make functions available as template filters.""" |
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functions = [ |
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dateformat.format_custom, |
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dateformat.format_date_iso, |
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dateformat.format_date_short, |
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dateformat.format_date_long, |
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dateformat.format_datetime_iso, |
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dateformat.format_datetime_short, |
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dateformat.format_datetime_long, |
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dateformat.format_time, |
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dim, |
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fallback, |
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money.format_euro_amount, |
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separate_thousands, |
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utc_to_local_tz, |
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] |
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for f in functions: |
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app.add_template_filter(f) |
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byceps /
byceps
