def decimal_validator(node, value):
v = unicode(value)
sep = kw['separator']
prec = kw['precision']
try:
x = float(v.replace(',', '.'))
except ValueError:
raise c.Invalid(node, _('Please enter a number.'))
# if needed, at this point x is the float value to be saved.
if (sep == '.' and v.find(',') != -1) or \
(sep == ',' and v.find('.') != -1):
raise c.Invalid(
node,
_('Wrong separator. Try swapping dot (.) and comma (,).'))
try:
dec = v.split(sep)[1] # capture decimal part
except IndexError:
return None # validation succeeded
if len(dec) > prec:
raise c.Invalid(node, \
_("Maximum of %(p)d decimals.") % {'p': prec})
def _csv_generator(self, form_id, encoding='utf-8'):
'''A generator that returns the entries of a form line by line.
'''
form = sas.query(Form).filter(Form.id == form_id).one()
file = StringIO()
csvWriter = csv.writer(file, delimiter=b',',
quotechar=b'"', quoting=csv.QUOTE_NONNUMERIC)
# write column names
column_names = [self.tr(_('Entry')).encode(encoding),
self.tr(_('Submissions (Date, Time)')) \
.encode(encoding)] + \
[f.label.encode(encoding) for f in form.fields]
csvWriter.writerow(column_names)
for e in form.entries:
# get the data of the fields of the entry e in a list
fields_data = [e.entry_number, str(e.created)[:16]] + \
[f.value(e).format(url=self.request.application_url) \
.encode(encoding) for f in form.fields]
# generator which returns one row of the csv file (=data of the
# fields of the entry e)
csvWriter.writerow(fields_data)
row = file.getvalue()
file.seek(0)
file.truncate()
yield row
sas.remove()
def _csv_generator(self, form_id, encoding="utf-8"):
"""A generator that returns the entries of a form line by line.
"""
form = sas.query(Form).filter(Form.id == form_id).one()
file = StringIO()
csvWriter = csv.writer(file, delimiter=b",", quotechar=b'"', quoting=csv.QUOTE_NONNUMERIC)
# write column names
column_names = [
self.tr(_("Entry")).encode(encoding),
self.tr(_("Submissions (Date, Time)")).encode(encoding),
] + [f.label.encode(encoding) for f in form.fields]
csvWriter.writerow(column_names)
for e in form.entries:
# get the data of the fields of the entry e in a list
fields_data = [e.entry_number, str(e.created)[:16]] + [
f.value(e).format(url=self.request.application_url).encode(encoding) for f in form.fields
]
# generator which returns one row of the csv file (=data of the
# fields of the entry e)
csvWriter.writerow(fields_data)
row = file.getvalue()
file.seek(0)
file.truncate()
yield row
sas.remove()
def edit_category(self):
'''Receives and validates POSTed data. If data is okay, creates the
category. Otherwise, returns the form with errors.
'''
user = self.request.user
controls = self.request.POST.items()
try:
appstruct = new_category_form(user).validate(controls)
except d.ValidationFailure as e:
self.request.override_renderer = 'create_category.genshi'
return dict(pagetitle=_("New category"),
new_category_form=e.render())
user = self.request.user
cat_name = appstruct['name']
cat_desc = appstruct['description']
if cat_name != '':
category = sas.query(FormCategory) \
.filter(FormCategory.name==cat_name) \
.filter(FormCategory.user==user) \
.first()
if category: # If the system found a category, don't create
errors = _("That category already exists.")
return {'errors': errors}
else: # Create a category!
new_category = FormCategory(name=cat_name,
description=cat_desc,
user=user)
sas.add(new_category)
sas.flush()
all_data = user.all_categories_and_forms()
return dict(changed=True, all_data=all_data)
def create_csv(self, encoding='utf-8'):
'''Exports one entry to a form as csv file and initializes
download from the server.
'''
entry_id = self.request.matchdict['id']
# Assign name of the file dynamically according to form name and
# creation date
entry, form = self._get_entry_and_form_if_belongs_to_user(
entry_id=entry_id)
name = self.tr(_('Entry_{0}_{1}_of_{2}.csv')) \
.format(entry.entry_number,
unicode(entry.created)[:10],
unicode(form.name[:200]).replace(' ', '_'))
file = StringIO()
csvWriter = csv.writer(file,
delimiter=b',',
quotechar=b'"',
quoting=csv.QUOTE_NONNUMERIC)
column_names = [self.tr(_('Entry')).encode(encoding),
self.tr(_('Submissions (Date, Time)')) \
.encode(encoding)] + \
[f.label.encode(encoding) for f in form.fields]
csvWriter.writerow(column_names)
# get the data of the fields of one entry e in a list of lists
fields_data = [entry.entry_number, str(entry.created)[:16]] + \
[f.value(entry).format(url=self.request.application_url). \
encode(encoding) for f in form.fields]
csvWriter.writerow(fields_data)
entryfile = file.getvalue()
return Response(status='200 OK',
headerlist=[(b'Content-Type', b'text/comma-separated-values'),
(b'Content-Disposition', b'attachment; filename={0}' \
.format (name.encode(encoding)))],
body=entryfile)
def edit_category(self):
'''Receives and validates POSTed data. If data is okay, creates the
category. Otherwise, returns the form with errors.
'''
user = self.request.user
controls = self.request.POST.items()
try:
appstruct = new_category_form(user).validate(controls)
except d.ValidationFailure as e:
self.request.override_renderer = 'create_category.genshi'
return dict(pagetitle=_("New category"),
new_category_form=e.render())
user = self.request.user
cat_name = appstruct['name']
cat_desc = appstruct['description']
if cat_name != '':
category = sas.query(FormCategory) \
.filter(FormCategory.name==cat_name) \
.filter(FormCategory.user==user) \
.first()
if category: # If the system found a category, don't create
errors = _("That category already exists.")
return {'errors': errors}
else: # Create a category!
new_category = FormCategory(name=cat_name, description=cat_desc,
user=user)
sas.add(new_category)
sas.flush()
all_data = user.all_categories_and_forms()
return dict(changed=True, all_data=all_data)
def create_csv(self, encoding='utf-8'):
'''Exports one entry to a form as csv file and initializes
download from the server.
'''
entry_id = self.request.matchdict['id']
# Assign name of the file dynamically according to form name and
# creation date
entry, form = self._get_entry_and_form_if_belongs_to_user(
entry_id=entry_id)
name = self.tr(_('Entry_{0}_{1}_of_{2}.csv')) \
.format(entry.entry_number,
unicode(entry.created)[:10],
unicode(form.name[:200]).replace(' ', '_'))
file = StringIO()
csvWriter = csv.writer(file, delimiter=b',',
quotechar=b'"', quoting=csv.QUOTE_NONNUMERIC)
column_names = [self.tr(_('Entry')).encode(encoding),
self.tr(_('Submissions (Date, Time)')) \
.encode(encoding)] + \
[f.label.encode(encoding) for f in form.fields]
csvWriter.writerow(column_names)
# get the data of the fields of one entry e in a list of lists
fields_data = [entry.entry_number, str(entry.created)[:16]] + \
[f.value(entry).format(url=self.request.application_url). \
encode(encoding) for f in form.fields]
csvWriter.writerow(fields_data)
entryfile = file.getvalue()
return Response(status='200 OK',
headerlist=[(b'Content-Type', b'text/comma-separated-values'),
(b'Content-Disposition', b'attachment; filename={0}' \
.format (name.encode(encoding)))],
body=entryfile)
def web_url(node, val):
'''Checks whether the value is an http or https URL.'''
pieces = urlparse(val)
if not all([pieces.scheme, pieces.netloc]):
raise c.Invalid(node, _('The URL must include http or https.\nFor example, http://www.example.com'))
if pieces.scheme not in ('http', 'https'):
raise c.Invalid(node, _('The URL must include http or https.'))
domain, error_message = domain_validator.validate(pieces.netloc)
if error_message:
raise c.Invalid(node, error_message)
def create_category_schema(user):
'''Returns a schema for creation of a category, imperatively built'''
schema = c.SchemaNode(c.Mapping())
schema.add(c.SchemaNode(c.Str(), name="name", title=_('Name'),
validator=c.All(c.Length(**LEN_NAME),
validate_based_on_user(user))))
schema.add(c.SchemaNode(c.Str(), name="description", title=_('Description'),
missing='', validator=c.Length(**LEN_DESCRIPTION)))
return schema
def integer_validator(node, value):
v = unicode(value)
try:
x = float(v.replace(',', '.'))
except ValueError:
raise c.Invalid(node, _('Please enter a number.'))
# if needed, at this point x is the float value to be saved.
if v.find('.') != -1 or v.find(',') != -1:
raise c.Invalid(node, _('Please enter an integer number.'))
def integer_validator(node, value):
v = unicode(value)
try:
x = float(v.replace(',', '.'))
except ValueError:
raise c.Invalid(node, _('Please enter a number.'))
# if needed, at this point x is the float value to be saved.
if v.find('.') != -1 or v.find(',') != -1:
raise c.Invalid(node, _('Please enter an integer number.'))
class ContactFormSchema(c.MappingSchema):
name = c.SchemaNode(c.Str(),
title=_('Name'),
validator=c.Length(**LEN_NAME))
email = c.SchemaNode(c.Str(), title=_('Email'), validator=c.Email())
subject = c.SchemaNode(c.Str(),
title=_('Subject'),
validator=c.Length(**LEN_SUBJECT))
message = c.SchemaNode(c.Str(),
title=_('Message'),
widget=TextAreaWidget(cols=40, rows=12),
validator=c.Length(**LEN_MESSAGE))
def copy(self):
form = self._get_form_if_belongs_to_user()
if form:
form_copy = form.copy()
form_copy.name += " " + _("(copy)")
sas.flush()
error = ""
else:
error = _("This form does not exist.")
user = self.request.user
all_data = user.all_categories_and_forms()
return {"errors": error, "all_data": all_data, "form_copy_id": form_copy.id}
class TextAreaField(TextBase):
name = _('Multiline text')
brief = _("multiline text")
defaultValue = dict(defaul='', required=False)
def get_widget(self):
f = self.field
return d.widget.TextAreaWidget(
template='form_textarea',
style='width:{}px; height: {}px;'.format(f.get_option('width'),
f.get_option('height')))
_special_options = 'defaul enableLength minLength maxLength enableWords ' \
'minWords maxWords height width'.split()
def copy(self):
form = self._get_form_if_belongs_to_user()
if form:
form_copy = form.copy()
form_copy.name += " " + _("(copy)")
sas.flush()
error = ''
else:
error = _("This form does not exist.")
user = self.request.user
all_data = user.all_categories_and_forms()
return {'errors': error, 'all_data': all_data,
'form_copy_id': form_copy.id}
def validate_user(node, value):
cat = sas.query(FormCategory) \
.filter(FormCategory.user_id==user.id) \
.filter(FormCategory.name==value).first()
if cat:
raise c.Invalid(node,
_('There is already a category with this name.'))
def date_validation(node, val):
try:
date = datetime.strptime(val,
df.formats[int(self.field.get_option \
('input_date_format'))]['py'])
except ValueError:
raise c.Invalid(node, _("Invalid date format"))
def show_contact_form(self):
'''Displays the contact form'''
# "action" defines where the form POSTs to
contact_form = d.Form(contact_form_schema, buttons=('submit',),
action=self.url('contact'), formid='contactform')
return dict(pagetitle=_("Contact"),
contact_form=contact_form.render())
def save_website_code(self):
'''Responds to the AJAX request and saves a collector.'''
request = self.request
posted = request.POST
id = request.matchdict['id']
form_id = request.matchdict['form_id']
form = FormView(request)._get_form_if_belongs_to_user(form_id=form_id)
if not form:
return dict(error=_("Form not found."))
# Validate `posted` with colander:
try:
posted = website_code_schema.deserialize(posted)
except c.Invalid as e:
return e.asdict()
# Validation passes, so create or update the model.
if id == 'new':
collector = WebsiteCodeCollector(form=form)
sas.add(collector)
else:
collector = self._get_collector_if_belongs_to_user(id)
# Copy the data
self._parse_start_and_end_date(posted)
for k, v in posted.items():
setattr(collector, k, v)
sas.flush()
return collector.to_dict()
def date_validation(node, val):
try:
date = datetime.strptime(val,
df.formats[int(self.field.get_option \
('input_date_format'))]['py'])
except ValueError:
raise c.Invalid(node, _("Invalid date format"))
def _send_email_entry(self, entry):
sender = self.request.registry.settings.get('mail.message.author',
'*****@*****.**')
recipient = entry.form.user.email
subject = _("[MootiroForm] Entry #%(entry_number)d for the form %(form_title)s") \
% {"entry_number": entry.entry_number,
"form_title": entry.form.name}
labels = [f.label for f in entry.form.fields]
value = [f.value(entry) for f in entry.form.fields]
fields = [{
'label': labels[i],
'value': value[i]
} for i in range(len(labels))]
try:
rendered = self.request.registry.settings['genshi_renderer'] \
.fragment('email_entry.genshi',
dict(entry=entry, fields=fields, url=self.url))
except KeyError as e:
raise KeyError(
"Simon says: cd mootiro_web; git pull; ./setup.py develop")
# TODO: Remove this except block after developers have updated.
# 2011-08-11
msg = Message(sender, recipient, self.tr(subject))
msg.rich = rendered
msg.plain = "We've collected an entry for you form. Visit us to see."
msg.send()
def export_json(self):
form_dict = dict(form_name=self.name or _('Untitled form'),
form_description=self.description,
fields=[f.to_dict(to_export=True) \
for f in self.fields])
for field in form_dict['fields']:
field.pop('field_id')
return json.dumps(form_dict, indent=4)
def image_validation(node, val):
mimetype = val['mimetype']
size = val['size']
configured = f.get_option('mimeTypes').split('|')
for allowed in [m for m in mt.mimetypes]:
if allowed['desc'] in configured and mimetype in allowed['py']:
return
raise c.Invalid(node, _("Invalid image format"))
def image_validation(node, val):
mimetype = val['mimetype']
size = val['size']
configured = f.get_option('mimeTypes').split('|')
for allowed in [m for m in mt.mimetypes]:
if allowed['desc'] in configured and mimetype in allowed['py']:
return
raise c.Invalid(node, _("Invalid image format"))
def export_json(self):
form_dict = dict(form_name=self.name or _('Untitled form'),
form_description=self.description,
fields=[f.to_dict(to_export=True) \
for f in self.fields])
for field in form_dict['fields']:
field.pop('field_id')
return json.dumps(form_dict, indent=4)
def valid_interval(node, value):
if value['start_date']:
start_date = datetime.strptime(value['start_date'], "%Y-%m-%d %H:%M")
if value['end_date']:
end_date = datetime.strptime(value['end_date'], "%Y-%m-%d %H:%M")
if start_date > end_date:
raise c.Invalid(node, _('The start date must be before'
' the end date'))
def valid_require(node, value):
if self.field.get_option('new_option') == 'true':
if self.field.required:
if list_type != 'radio':
if not value['option'].difference(set([''])) \
and not value['other']:
raise c.Invalid(node, _('Required.'))
else:
if not value['option'] and not value['other']:
raise c.Invalid(node, _('Required.'))
elif self.field.required:
if list_type != 'radio':
if not value['option'].difference(set([''])):
raise c.Invalid(node, _('Required.'))
elif not value['option']:
raise c.Invalid(node, _('Required.'))
def show_contact_form(self):
'''Displays the contact form'''
# "action" defines where the form POSTs to
contact_form = d.Form(contact_form_schema,
buttons=('submit', ),
action=self.url('contact'),
formid='contactform')
return dict(pagetitle=_("Contact"), contact_form=contact_form.render())
def _get_schema_and_form(self, form):
form_schema = create_form_schema(form)
entry_form = make_form(
form_schema,
i_template="form_mapping_item",
buttons=[form.submit_label if form.submit_label else _("Submit")],
action=(self.url("form", action="view", id=form.id)),
)
return form_schema, entry_form
def valid_interval(node, value):
if value['start_date']:
start_date = datetime.strptime(value['start_date'], "%Y-%m-%d %H:%M")
if value['end_date']:
end_date = datetime.strptime(value['end_date'], "%Y-%m-%d %H:%M")
if start_date > end_date:
raise c.Invalid(
node, _('The start date must be before'
' the end date'))
def in_the_future(node, value):
'''Checks whether the date is in the future'''
if value:
try:
date = datetime.strptime(value, "%Y-%m-%d %H:%M")
except:
return
if date and date < datetime.utcnow():
raise c.Invalid(node, _('The end date must be in the future'))
def create_category_schema(user):
'''Returns a schema for creation of a category, imperatively built'''
schema = c.SchemaNode(c.Mapping())
schema.add(
c.SchemaNode(c.Str(),
name="name",
title=_('Name'),
validator=c.All(c.Length(**LEN_NAME),
validate_based_on_user(user))))
schema.add(
c.SchemaNode(c.Str(),
name="description",
title=_('Description'),
missing='',
validator=c.Length(**LEN_DESCRIPTION)))
return schema
def _get_schema_and_form(self, form, slug=None):
if not slug:
slug = self.request.matchdict['slug']
form_schema = create_form_schema(form)
entry_form = make_form(form_schema, i_template='form_mapping_item',
buttons=[form.submit_label if form.submit_label else _('Submit')],
action=(self.url('entry_form_slug', action='save_entry',
slug=slug)))
return form_schema, entry_form
def in_the_future(node, value):
'''Checks whether the date is in the future'''
if value:
try:
date = datetime.strptime(value, "%Y-%m-%d %H:%M")
except:
return
if date and date < datetime.utcnow():
raise c.Invalid(node, _('The end date must be in the future'))
def delete(self):
collector = self._get_collector_if_belongs_to_user()
if collector:
sas.delete(collector)
sas.flush()
error = ''
else:
error = _("This collector does not exist.")
return {'errors': error}
def date_string(node, value):
'''Checks whether the date is of the correct format to transform it into a
datetime object'''
if value:
try:
datetime.strptime(value, "%Y-%m-%d %H:%M")
except:
raise c.Invalid(node, _('Please enter a valid date of the format'
' yyyy-mm-dd hh:mm'))
def collectors(self):
'''Displays all collectors of a form.'''
# TODO Don't convert to int here, use the regex in Pyramid routes
form_id = int(self.request.matchdict['id'])
form = FormView(self.request)._get_form_if_belongs_to_user(form_id=form_id)
collectors = [c.to_dict(translator=self.tr) for c in form.collectors]
collectors_json = safe_json_dumps(collectors)
return dict(form=form, collectors_json=collectors_json,
pagetitle=_('Collectors for {0}').format(form.name))
def delete_entry(self):
entry_id = self.request.matchdict['id']
entry, form = self._get_entry_and_form_if_belongs_to_user(
entry_id=entry_id)
if entry and form:
if entry.new:
form.new_entries -= 1
entry.delete_entry()
return dict(errors=None, entry=entry_id)
return _("You cannot delete this entry.")
def list(self):
'''Displays a list of the entries of a form.'''
form_id = int(self.request.matchdict['id'])
form = FormView(self.request)._get_form_if_belongs_to_user(form_id)
entries = [e.to_dict() for e in entry.pagination(form_id)]
entries_json = safe_json_dumps(entries)
return dict(form=form, form_id=form.id, entries_json=entries_json,
entries=form.entries,
pagetitle=_('Entries for {0}').format(form.name))
def delete_entry(self):
entry_id = self.request.matchdict['id']
entry, form = self._get_entry_and_form_if_belongs_to_user(
entry_id=entry_id)
if entry and form:
if entry.new:
form.new_entries -= 1
entry.delete_entry()
return dict(errors=None,entry=entry_id)
return _("You cannot delete this entry.")
def min_and_max_words_validator(node, val):
'''This is a colander validator that checks the number of words in the
value.
A colander validator is a callable which accepts two positional
arguments: node and value. It returns None if the value is valid.
It raises a colander.Invalid exception if the value is not valid.
'''
word_count = len(val.split())
# TODO Pluralize these error messages
if word_count < node.min_words:
raise c.Invalid(node,
_('Text contains {} words, the minimum is {}.') \
.format(word_count, node.min_words))
if word_count > node.max_words:
raise c.Invalid(node,
_('Text contains {} words, the maximum is {}.') \
.format(word_count, node.max_words))
return None
def min_and_max_words_validator(node, val):
'''This is a colander validator that checks the number of words in the
value.
A colander validator is a callable which accepts two positional
arguments: node and value. It returns None if the value is valid.
It raises a colander.Invalid exception if the value is not valid.
'''
word_count = len(val.split())
# TODO Pluralize these error messages
if word_count < node.min_words:
raise c.Invalid(node,
_('Text contains {} words, the minimum is {}.') \
.format(word_count, node.min_words))
if word_count > node.max_words:
raise c.Invalid(node,
_('Text contains {} words, the maximum is {}.') \
.format(word_count, node.max_words))
return None
def file_validation(node, val):
mimetype = val['mimetype']
size = val['size']
is_mimetype_allowed = False
for allowed in mt.mimetypes:
if mimetype == allowed['py']:
is_mimetype_allowed = True
if not is_mimetype_allowed:
raise c.Invalid(node, _("Invalid file format"))
def file_validation(node, val):
mimetype = val['mimetype']
size = val['size']
is_mimetype_allowed = False
for allowed in mt.mimetypes:
if mimetype == allowed['py']:
is_mimetype_allowed = True
if not is_mimetype_allowed:
raise c.Invalid(node, _("Invalid file format"))
def min_choices(node, value):
try:
int(min_num)
except ValueError:
return
if self.field.get_option('new_option') == 'true':
add = 1 if value['other'] != '' else 0
else:
add = 0
lacking_options = int(min_num) - \
len(value['option'].difference(set(['']))) + add
if lacking_options > 0:
if lacking_options == 1:
raise c.Invalid(node,
_('Please select one more option.'))
else:
raise c.Invalid(node,
_('Please select {0} more options.'). \
format(lacking_options))
def entry_data(self):
entry_id = self.request.matchdict['id']
entry, form = self._get_entry_and_form_if_belongs_to_user(
entry_id=entry_id)
if entry and form:
if entry.new:
entry.new = False
form.new_entries -= 1
return entry.fields_data(field_idx="FIELD_LABEL",
request=self.request)
return _("Access denied")
def date_string(node, value):
'''Checks whether the date is of the correct format to transform it into a
datetime object'''
if value:
try:
datetime.strptime(value, "%Y-%m-%d %H:%M")
except:
raise c.Invalid(
node,
_('Please enter a valid date of the format'
' yyyy-mm-dd hh:mm'))
def _get_schema_and_form(self, form, slug=None):
if not slug:
slug = self.request.matchdict['slug']
form_schema = create_form_schema(form)
entry_form = make_form(
form_schema,
i_template='form_mapping_item',
buttons=[form.submit_label if form.submit_label else _('Submit')],
action=(self.url('entry_form_slug', action='save_entry',
slug=slug)))
return form_schema, entry_form
def delete(self):
form = self._get_form_if_belongs_to_user()
if form:
sas.delete(form)
sas.flush()
error = ''
else:
error = _("This form does not exist.")
user = self.request.user
all_data = user.all_categories_and_forms()
return {'error': error, 'all_data': all_data}
def entry_data(self):
entry_id = self.request.matchdict['id']
entry, form = self._get_entry_and_form_if_belongs_to_user(
entry_id=entry_id)
if entry and form:
if entry.new:
entry.new = False
form.new_entries -= 1
return entry.fields_data(field_idx="FIELD_LABEL",
request=self.request)
return _("Access denied")
def delete(self):
form = self._get_form_if_belongs_to_user()
if form:
sas.delete(form)
sas.flush()
error = ""
else:
error = _("This form does not exist.")
user = self.request.user
all_data = user.all_categories_and_forms()
return {"error": error, "all_data": all_data}
def max_choices(node, value):
try:
imax_num = int(max_num)
except ValueError:
return
if self.field.get_option('new_option') == 'true':
add = 1 if value['other'] != '' else 0
else:
add = 0
excess_number = \
len(value['option'].difference(set(['']))) + \
add - imax_num
if imax_num != 0 and excess_number > 0:
if excess_number == 1:
raise c.Invalid(node,
_('Please deselect one option.'))
else:
raise c.Invalid(node,
_('Please deselect {0} options.'). \
format(excess_number))
def rename(self):
cat_id = self.request.matchdict.get('id')
cat_name = self.request.POST['category_name']
if cat_name != '':
category = sas.query(FormCategory).filter(FormCategory.id==cat_id)\
.one()
if category:
category.name = cat_name
sas.flush()
errors = ''
else:
errors = _("Error finding category")
return {'errors': errors}
def decimal_validator(node, value):
v = unicode(value)
sep = kw['separator']
prec = kw['precision']
try:
x = float(v.replace(',', '.'))
except ValueError:
raise c.Invalid(node, _('Please enter a number.'))
# if needed, at this point x is the float value to be saved.
if (sep == '.' and v.find(',') != -1) or \
(sep == ',' and v.find('.') != -1):
raise c.Invalid(node, _('Wrong separator. Try swapping dot (.) and comma (,).'))
try:
dec = v.split(sep)[1] # capture decimal part
except IndexError:
return None # validation succeeded
if len(dec) > prec:
raise c.Invalid(node, \
_("Maximum of %(p)d decimals.") % {'p': prec})