eventcally/forms/widgets.py
2020-10-28 08:56:15 +01:00

107 lines
4.2 KiB
Python

from wtforms import DateTimeField, SelectMultipleField, SelectField
from wtforms.widgets import html_params, HTMLString, ListWidget, CheckboxInput
from wtforms.validators import StopValidation
import pytz
from datetime import datetime
from flask_babelex import to_user_timezone, gettext
from dateutils import berlin_tz
class MultiCheckboxField(SelectMultipleField):
widget = ListWidget(prefix_label=False)
option_widget = CheckboxInput()
def create_option_string(count, value):
result = ""
for i in range(count):
selected = " selected" if i == value else ""
result = result + '<option value="%02d"%s>%02d</option>' % (i, selected, i)
return result
class CustomDateTimeWidget:
def __call__(self, field, **kwargs):
id = kwargs.pop('id', field.id)
date = ''
hour = minute = 0
if field.data:
date_value = to_user_timezone(field.data)
date = date_value.strftime("%Y-%m-%d")
hour = date_value.hour
minute = date_value.minute
date_params = html_params(name=field.name, id=id, value=date, **kwargs)
time_hour_params = html_params(name=field.name, id=id + '-hour', **kwargs)
time_minute_params = html_params(name=field.name, id=id + '-minute', **kwargs)
clear_button_id = id + '-clear-button'
return HTMLString('<div class="input-group-prepend mt-1"><input type="text" class="datepicker" {}/><button class="btn btn-outline-secondary" type="button" id="{}"><i class="fa fa-times"></i></button></div><div class="mx-2"></div><div class="input-group-append mt-1"><select {}>{}</select><span class="input-group-text">:</span><select {}>{}</select></div>'.format(date_params, clear_button_id, time_hour_params, create_option_string(24, hour), time_minute_params, create_option_string(60, minute)))
class CustomDateTimeField(DateTimeField):
widget = CustomDateTimeWidget()
def process_formdata(self, valuelist):
if valuelist:
try:
date_str, hour_str, minute_str = valuelist
if not date_str:
self.data = None
return
date = datetime.strptime(date_str, "%Y-%m-%d")
date_time = datetime(date.year, date.month, date.day, int(hour_str), int(minute_str))
self.data = berlin_tz.localize(date_time)
except:
raise ValueError('Not a valid datetime value. Looking for YYYY-MM-DD HH:mm.')
class CustomDateWidget:
def __call__(self, field, **kwargs):
id = kwargs.pop('id', field.id)
date = ''
if field.data:
date_value = to_user_timezone(field.data)
date = date_value.strftime("%Y-%m-%d")
date_params = html_params(name=field.name, id=id, value=date, **kwargs)
return HTMLString('<input type="text" {}/>'.format(date_params))
class CustomDateField(DateTimeField):
widget = CustomDateWidget()
def process_formdata(self, valuelist):
if valuelist:
try:
date_str = valuelist[0]
if not date_str:
self.data = None
return
date = datetime.strptime(date_str, "%Y-%m-%d")
self.data = berlin_tz.localize(date)
except:
raise ValueError('Not a valid date value. Looking for YYYY-MM-DD.')
def try_to_int(value):
if isinstance(value, int):
return value
if isinstance(value, str) and value.isdigit():
try:
return int(value)
except ValueError:
return value
return value
class TagSelectField(SelectField):
def __init__(self, label=None, validators=None, coerce=try_to_int, choices=None, validate_choice=True, **kwargs):
super(TagSelectField, self).__init__(label, validators, coerce, choices, validate_choice, **kwargs)
def pre_validate(self, form):
if self.is_free_text():
if not self.data or not self.data.strip():
raise StopValidation(gettext('This field is required'))
else:
super(TagSelectField, self).pre_validate(form)
def is_free_text(self):
return isinstance(self.data, str)