Python validators.optional函数代码示例

def formfield_from_modelfield(field):
    field_type = field.__class__.__name__.lower()
    opts = {
        'validators': []
    }

    default = getattr(field, 'default', odis.EMPTY)

    if field_type == 'relfield':
        opts['queryset'] = field.model.obj.all()

    if is_coll_field(field):
        opts['validators'].append(validators.optional())
    elif default != odis.EMPTY or getattr(field, 'nil', False):
        opts['validators'].append(validators.optional())
    else:
        opts['validators'].append(validators.required())

    if default != odis.EMPTY:
        opts['default'] = default

    if getattr(field, 'choices', False):
        opts['choices'] = field.choices

    opts['label'] = field.verbose_name or field.name

    if 'choices' in opts:
        form_field = fields.SelectField
        #opts['coerce'] = field.to_python
    else:
        form_field = fields_table[field_type]

    return form_field(**opts)

 def test_optional(self):
     self.assertEqual(optional()(self.form, DummyField("foobar", raw_data=["foobar"])), None)
     self.assertRaises(StopValidation, optional(), self.form, DummyField("", raw_data=[""]))
     self.assertRaises(StopValidation, optional(), self.form, DummyField(" ", raw_data=[" "]))
     self.assertEqual(optional().field_flags, ("optional",))
     f = DummyField("", ["Invalid Integer Value"], raw_data=[""])
     self.assertEqual(len(f.errors), 1)
     self.assertRaises(StopValidation, optional(), self.form, f)
     self.assertEqual(len(f.errors), 0)

 def test_optional(self):
     self.assertEqual(optional()(self.form, DummyField('foobar', raw_data=['foobar'])), None)
     self.assertRaises(StopValidation, optional(), self.form, DummyField('', raw_data=['']))
     self.assertRaises(StopValidation, optional(), self.form, DummyField(' ', raw_data=[' ']))
     self.assertEqual(optional().field_flags, ('optional', ))
     f = DummyField('', ['Invalid Integer Value'], raw_data=[''])
     self.assertEqual(len(f.errors), 1)
     self.assertRaises(StopValidation, optional(), self.form, f)
     self.assertEqual(len(f.errors), 0)

def build_questionnaire(form, data=None):
    fields = {'groups': []}
    fields['participant'] = StringField(
        u'Participant',
        filters=[partial(filter_participants, form)],
        validators=[validators.required()])

    for group in form.groups:
        groupspec = (group.name, [])

        for field in group.fields:
            # if the field has options, create a list of choices
            if field.options:
                choices = [(v, k) for k, v in field.options.iteritems()]

                if field.allows_multiple_values:
                    fields[field.name] = IntegerSplitterField(
                        field.name,
                        choices=choices,
                        description=field.description,
                        validators=[validators.optional()],
                    )
                else:
                    fields[field.name] = SelectField(
                        field.name,
                        choices=choices,
                        coerce=int,
                        description=field.description,
                        validators=[validators.optional()],
                        widget=widgets.TextInput()
                    )
            else:
                if form.form_type == 'CHECKLIST':
                    fields[field.name] = IntegerField(
                        field.name,
                        description=field.description,
                        validators=[
                            validators.optional(),
                            validators.NumberRange(min=field.min_value,
                                                   max=field.max_value)]
                    )
                else:
                    fields[field.name] = IntegerField(
                        field.name,
                        description=field.description,
                        validators=[validators.optional()]
                    )

        fields['groups'].append(groupspec)

    form_class = type('QuestionnaireForm', (BaseQuestionnaireForm,), fields)


    return form_class(data)

    def load_filters(cls, filters):
        '''Load Filter Fields
            Init a filter form using filter settings

        arguments:
            filters: a dict list with information to form a filter
            with format for each item:
                0. id: unique english name for field
                1. name: always same as the colums name to be filtered
                2. type: using following types
                            - str:  this type will only be used for search
                            - float:  this type will only be filtered
                                      with a min and max val
                            - date:  this type will only be filtered with
                                     an earliest date and a latest date

        throw a INVALID_FILTER_FORMAT error when filters not obey this rule
        '''
        must_keys = ('id', 'name', 'type')

        # check if filters' format is correct
        for item in filters:
            for mk in must_keys:
                if mk not in item.keys():
                    raise AppError('INVALID_FILTER_FORMAT')

        # init the filter
        for item in filters:
            if item['type'] == 'str':
                setattr(cls, item['id'], TextField(item['name']))
            if item['type'] == 'float':
                setattr(cls,
                        '{}_min'.format(item['id']),
                        DecimalField('min value of {}'.format(item['name']),
                                     [validators.optional()]))
                setattr(cls,
                        '{}_max'.format(item['id']),
                        DecimalField('max value of {}'.format(item['name']),
                                     [validators.optional()]))
            if item['type'] == 'date':
                setattr(cls,
                        '{}_earlier'.format(item['id']),
                        DateField('earlier {}'.format(item['name']),
                                  [validators.optional()]))
                setattr(cls,
                        '{}_later'.format(item['id']),
                        DateField('later {}'.format(item['name']),
                                  [validators.optional()]))

def field_factory(attr):
        kwargs = defaultdict(list)
        kwargs['id'] = attr.name
        kwargs['label'] = attr.comment
        if attr.in_key: kwargs['validators'].append(required())
        if attr.nullable or attr.default is not None:
            kwargs['validators'].append(optional())
        if attr.type.startswith('int'):
            return wtf.IntegerField(**kwargs)
        elif attr.type == 'double' or attr.type == 'float':
            return wtf.FloatField(**kwargs)
        elif attr.type.startswith('varchar'):
            ml = int(attr.type.split('(')[-1][:-1])
            return wtf.StringField(**kwargs) # TODO: can I specify a max length here?
        elif attr.type == 'date':
            kwargs['validators'].append(date_validator)
            return wtf.DateField(format='%Y-%m-%d', default=datetime.date.today(), **kwargs)
        elif attr.type.startswith('enum'):
            choices = [(e[1:-1],e[1:-1]) for e in attr.type[attr.type.find('(')+1:attr.type.rfind(')')].split(',')]
            return wtf.SelectField(choices=choices, **kwargs)
        elif attr.type.startswith('char'):
            l = int(attr.type.split('(')[-1][:-1])
            kwargs['validators'].append(len_validator_factory(l))
            return wtf.StringField(**kwargs) # TODO: can I specify a max length here?
        elif attr.type == 'timestamp':
            return wtf.DateTimeField(format='%Y-%m-%d %H:%M', default=datetime.datetime.today(), **kwargs)
        else:
            raise NotImplementedError('FieldFactory does not know what to do with %s' % (attr.type))

    def scaffold_form(self):
        class NewForm(Form):
            pass

        if self.create_form_class is None:
            return NewForm

        for field in self.create_form_class.DESCRIPTOR.fields:

            if self.form_excluded_columns and field.name in self.form_excluded_columns:
                continue

            field_type = field.type

            if field_type == 11:  # Todo: handle "message" type, which is a nested object
                continue

            FormClass = wtforms_type_map[field_type]
            description = self.swagger['definitions'][
                'lnrpc' + self.create_form_class.__name__]['properties'][
                field.name]
            description = description.get('title') or description.get(
                'description')
            if description:
                description = description.replace('/ ', '')
            form_field = FormClass(field.name,
                                   default=field.default_value or None,
                                   description=description,
                                   validators=[validators.optional()]
                                   )
            setattr(NewForm, field.name, form_field)
        return NewForm

    def convert(self, column):
        kwargs = {
            'label': column.info.get('label', column.name),
            'description': column.description,
            'validators': [],
            'default': column.default and column.default.arg
        }
        
        if column.info.get('optional', False):
            kwargs['validators'].append(validators.optional())
        elif not column.nullable:
            kwargs['validators'].append(validators.required())
        
        if hasattr(column.type, 'length') and column.type.length is not None:
            kwargs['validators'].append(validators.length(max=column.type.length))
        
        fname = type(column.type).__name__

        if len(column.foreign_keys) > 0:
            return self.conv_ForeignKey(kwargs, column)

        if fname in self.SIMPLE_CONVERSIONS:
            return self.SIMPLE_CONVERSIONS[fname](**kwargs)
        else:
            mod = getattr(self, 'conv_%s' % fname, None)
            if mod is not None:
                return mod(kwargs, column)

 def __init__(self, **kwargs):
     defaults = dict(
         icon='calendar',
         validators=[optional()],
         widget_classes="form-control"
     )
     defaults.update(kwargs)
     super(Date, self).__init__(**defaults)

 def __init__(self, **kwargs):
     warnings.warn("Field has been deprecated", PendingDeprecationWarning)
     defaults = dict(icon='flag',
                     export_key='language',
                     validators=[optional()],
                     widget_classes="form-control")
     defaults.update(kwargs)
     super(LanguageField, self).__init__(**defaults)

def client_global_edit(client_id, dev_id):
    with app.db.session_scope():
        dev = app.db.get_device(dev_id)
        known_items = {}
        class F(Form):
            pass
        for item in dev["parameters"]:
            item = dev["parameters"][item]
            default = item["value"]
            arguments = [Required()]
            # keep track of the known fields
            known_items[item["key"]] = {u"id": item["id"], u"type": item["type"]}
            # build the field
            if item["type"] == "boolean":
                if default == 'y' or default == 1 or default == True: # in db value stored in lowcase
                    default = True
                else:
                    default = False
                field = BooleanField(item["key"], [validators.optional()], default=default) # set to optional field due to WTForm BooleanField return no data for false value (HTML checkbox)
            elif item["type"] == "integer":
                field = IntegerField(item["key"], arguments, default=default)
            elif item["type"] == "float":
                field = DateTimeField(item["key"], arguments, default=default)
            else:
                # time, email, ipv4, ipv6, url
                field = TextField(item["key"], arguments, default=default)
            # add the field
            setattr(F, "{0}-{1}".format(item["id"], item["key"]), field)
        form = F()
        if request.method == 'POST' and form.validate():
            for key, item in known_items.iteritems():
                val = getattr(form, "{0}-{1}".format(item["id"], key)).data
                if item["type"] == "boolean":
                    if val == False:
                        val = 'n' # in db value stored in lowcase
                    else:
                        val = 'y' # in db value stored in lowcase
                app.db.udpate_device_param(item["id"], value=val)
            return redirect("/client/{0}/dmg_devices/known".format(client_id))
            pass
        else:
                return render_template('client_global.html',
                form = form,
                clientid = client_id,
                client_detail = get_client_detail(client_id),
                mactive="clients",
                active = 'devices',
                device = dev)

    def test_optional(self):
        self.assertEqual(optional()(self.form, DummyField('foobar', raw_data=['foobar'])), None)
        self.assertRaises(StopValidation, optional(), self.form, DummyField('', raw_data=['']))
        self.assertEqual(optional().field_flags, ('optional', ))
        f = DummyField('', ['Invalid Integer Value'], raw_data=[''])
        self.assertEqual(len(f.errors), 1)
        self.assertRaises(StopValidation, optional(), self.form, f)
        self.assertEqual(len(f.errors), 0)

        # Test for whitespace behavior.
        whitespace_field = DummyField(' ', raw_data=[' '])
        self.assertRaises(StopValidation, optional(), self.form, whitespace_field)
        self.assertEqual(optional(strip_whitespace=False)(self.form, whitespace_field), None)

    def test_optional(self):
        self.assertEqual(optional()(self.form, DummyField("foobar", raw_data=["foobar"])), None)
        self.assertRaises(StopValidation, optional(), self.form, DummyField("", raw_data=[""]))
        self.assertEqual(optional().field_flags, ("optional",))
        f = DummyField("", ["Invalid Integer Value"], raw_data=[""])
        self.assertEqual(len(f.errors), 1)
        self.assertRaises(StopValidation, optional(), self.form, f)
        self.assertEqual(len(f.errors), 0)

        # Test for whitespace behavior.
        whitespace_field = DummyField(" ", raw_data=[" "])
        self.assertRaises(StopValidation, optional(), self.form, whitespace_field)
        self.assertEqual(optional(strip_whitespace=False)(self.form, whitespace_field), None)

    def convert(self, field):
        kwargs = {
            'label': field.verbose_name,
            'description': field.help_text,
            'validators': [],
            'default': field.default,
        }
        if field.blank:
            kwargs['validators'].append(validators.optional())
        if field.max_length is not None and field.max_length > 0:
            kwargs['validators'].append(validators.length(max=field.max_length))

        fname = type(field).__name__

        if field.choices:
            kwargs['choices'] = field.choices
            return f.SelectField(**kwargs)
        elif fname in self.SIMPLE_CONVERSIONS:
            return self.SIMPLE_CONVERSIONS[fname](**kwargs)
        else:
            m = getattr(self, 'conv_%s' % fname, None)
            if m is not None:
                return m(kwargs, field)

#.........这里部分代码省略.........
                    ('.3%', '".3%" | 1234543.210%'),
                    ('.4r', '".4r" | 12350'),
                    ('.3f', '".3f" | 12345.432'),
                    ('+,', '"+," | +12,345.4321'),
                    ('$,.2f', '"$,.2f" | $12,345.43'),
                ],
                "description": _("D3 format syntax for numbers "
                            "https: //github.com/mbostock/\n"
                            "d3/wiki/Formatting")
            }),
            'row_limit': (FreeFormSelectField, {
                "label": _('Row limit'),
                "default": config.get("ROW_LIMIT"),
                "choices": self.choicify(
                    [10, 50, 100, 250, 500, 1000, 5000, 10000, 50000])
            }),
            'limit': (FreeFormSelectField, {
                "label": _('Series limit'),
                "choices": self.choicify(self.series_limits),
                "default": 50,
                "description": _(
                    "Limits the number of time series that get displayed")
            }),
            'rolling_type': (SelectField, {
                "label": _("Rolling"),
                "default": 'None',
                "choices": [(s, s) for s in ['None', 'mean', 'sum', 'std', 'cumsum']],
                "description": _(
                    "Defines a rolling window function to apply, works along "
                    "with the [Periods] text box")
            }),
            'rolling_periods': (IntegerField, {
                "label": _("Periods"),
                "validators": [validators.optional()],
                "description": _(
                    "Defines the size of the rolling window function, "
                    "relative to the time granularity selected")
            }),
            'series': (SelectField, {
                "label": _("Series"),
                "choices": group_by_choices,
                "default": default_groupby,
                "description": _(
                    "Defines the grouping of entities. "
                    "Each serie is shown as a specific color on the chart and "
                    "has a legend toggle")
            }),
            'entity': (SelectField, {
                "label": _("Entity"),
                "choices": group_by_choices,
                "default": default_groupby,
                "description": _("This define the element to be plotted on the chart")
            }),
            'x': (SelectField, {
                "label": _("X Axis"),
                "choices": datasource.metrics_combo,
                "default": default_metric,
                "description": _("Metric assigned to the [X] axis")
            }),
            'y': (SelectField, {
                "label": _("Y Axis"),
                "choices": datasource.metrics_combo,
                "default": default_metric,
                "description": _("Metric assigned to the [Y] axis")
            }),
            'size': (SelectField, {