232 lines
7.3 KiB
Python
232 lines
7.3 KiB
Python
# w.c.s. - web application for online forms
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# Copyright (C) 2005-2017 Entr'ouvert
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>.
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import datetime
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from decimal import Decimal
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from django import template
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from django.template import defaultfilters
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from django.utils import dateparse
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from django.utils.safestring import mark_safe
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from wcs.qommon import evalutils
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from wcs.qommon import tokens
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from wcs.qommon.admin.texts import TextsDirectory
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register = template.Library()
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@register.filter
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def get(mapping, key):
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return mapping.get(key)
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@register.filter
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def startswith(string, substring):
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return string and string.startswith(substring)
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@register.filter
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def split(string, separator=' '):
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return (string or '').split(separator)
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@register.filter
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def parse_date(date_string):
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try:
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return evalutils.make_date(date_string)
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except ValueError:
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pass
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# fallback to Django function
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try:
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return dateparse.parse_date(date_string)
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except (ValueError, TypeError):
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return None
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@register.filter(expects_localtime=True, is_safe=False)
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def date(value, arg=None):
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if arg is None:
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value = parse_date(value)
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if not value:
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return ''
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from wcs.variables import lazy_date
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return lazy_date(parse_date(value))
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if not isinstance(value, (datetime.datetime, datetime.date, datetime.time)):
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value = parse_datetime(value) or parse_date(value)
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return defaultfilters.date(value, arg=arg)
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@register.filter
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def parse_datetime(datetime_string):
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try:
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return evalutils.make_datetime(datetime_string)
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except ValueError:
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pass
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# fallback to Django function
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try:
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return dateparse.parse_datetime(datetime_string)
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except (ValueError, TypeError):
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return None
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@register.filter(name='datetime', expects_localtime=True, is_safe=False)
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def datetime_(value, arg=None):
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if arg is None:
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value = parse_datetime(value)
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if not value:
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return ''
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from wcs.variables import lazy_date
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return lazy_date(parse_datetime(value))
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if not isinstance(value, (datetime.datetime, datetime.date, datetime.time)):
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value = parse_datetime(value)
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return defaultfilters.date(value, arg=arg)
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@register.filter
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def parse_time(time_string):
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# if input is a datetime, extract its time
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try:
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dt = parse_datetime(time_string)
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if dt:
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return dt.time()
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except (ValueError, TypeError):
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pass
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# fallback to Django function
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try:
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return dateparse.parse_time(time_string)
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except (ValueError, TypeError):
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return None
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@register.filter(expects_localtime=True, is_safe=False)
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def time(value, arg=None):
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if arg is None:
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parsed = parse_time(value)
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return parsed if parsed is not None else '' # because bool(midnight) == False
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if not isinstance(value, (datetime.datetime, datetime.date, datetime.time)):
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value = parse_time(value)
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return defaultfilters.date(value, arg=arg)
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def parse_decimal(value):
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if isinstance(value, basestring):
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# replace , by . for French users comfort
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value = value.replace(',', '.')
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try:
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return Decimal(value).quantize(Decimal('1.0000')).normalize()
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except (ArithmeticError, TypeError):
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return None
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@register.filter(is_safe=False)
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def decimal(value, arg=None):
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if hasattr(value, 'get_value'):
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value = value.get_value() # unlazy
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if not isinstance(value, Decimal):
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value = parse_decimal(value)
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if value is None:
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return ''
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if hasattr(arg, 'get_value'):
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arg = arg.get_value() # unlazy
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if arg is None:
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return value
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return defaultfilters.floatformat(value, arg=arg)
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@register.filter(expects_localtime=True, is_safe=False)
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def add_days(value, arg):
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if hasattr(value, 'timetuple'):
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# extract real value in case of lazy object
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value = value.timetuple()
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value = parse_date(value) # consider only date, not hours
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if not value:
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return ''
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from wcs.variables import lazy_date
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arg = parse_decimal(arg)
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if not arg:
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return lazy_date(value)
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result = value + datetime.timedelta(days=float(arg))
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if hasattr(result, 'date'):
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result = result.date()
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return lazy_date(result)
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@register.filter(expects_localtime=True, is_safe=False)
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def add_hours(value, arg):
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if hasattr(value, 'timetuple'):
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# extract real value in case of lazy object
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value = value.timetuple()
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value = parse_datetime(value)
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if not value:
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return ''
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from wcs.variables import lazy_date
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arg = parse_decimal(arg)
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if not arg:
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return lazy_date(value)
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return lazy_date(value + datetime.timedelta(hours=float(arg)))
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@register.filter(expects_localtime=True, is_safe=False)
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def age_in_days(value, now=None):
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try:
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return evalutils.age_in_days(value, now)
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except ValueError:
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return ''
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@register.filter(expects_localtime=True, is_safe=False)
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def age_in_hours(value, now=None):
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# consider value and now as datetimes (and not dates)
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if hasattr(value, 'timetuple'):
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# extract real value in case of lazy object
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value = value.timetuple()
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value = parse_datetime(value)
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if not value:
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return ''
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if now is not None:
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if hasattr(now, 'timetuple'):
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now = now.timetuple()
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now = parse_datetime(now)
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if not now:
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return ''
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else:
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now = datetime.datetime.now()
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return int((now - value).total_seconds() / 3600)
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@register.filter(expects_localtime=True, is_safe=False)
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def age_in_years(value, today=None):
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try:
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return evalutils.age_in_years_and_months(value, today)[0]
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except ValueError:
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return ''
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@register.filter(expects_localtime=True, is_safe=False)
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def age_in_months(value, today=None):
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try:
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years, months = evalutils.age_in_years_and_months(value, today)
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except ValueError:
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return ''
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return years*12 + months
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@register.simple_tag
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def standard_text(text_id):
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return mark_safe(TextsDirectory.get_html_text(str(text_id)))
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@register.simple_tag(takes_context=True)
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def action_button(context, action_id, label, delay=3):
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from wcs.formdef import FormDef
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formdata_id = context.get('form_number_raw')
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formdef_urlname = context.get('form_slug')
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if not (formdef_urlname and formdata_id):
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return ''
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formdef = FormDef.get_by_urlname(formdef_urlname)
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formdata = formdef.data_class().get(formdata_id, ignore_errors=True)
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token = tokens.Token(expiration_delay=delay*86400, size=64)
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token.type = 'action'
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token.context = {
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'form_slug': formdef_urlname,
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'form_number_raw': formdata_id,
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'action_id': action_id,
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'label': label,
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}
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token.store()
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return '---===BUTTON:%s:%s===---' % (token.id, label)
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