base form class and custom field classes

forms.py

@@ -1,10 +1,38 @@
 from flask_wtf import FlaskForm
-from wtforms import StringField
+from wtforms import StringField as _StringField, SubmitField as _SubmitField
 from wtforms.validators import DataRequired, Email, Length
+from wtforms.fields.html5 import TelField as _TelField, EmailField as _EmailField
 
+class AddArgsMixin(object):
+    _field_args = {}
+
+    def __init__(self, name, field_args, *args, **kwargs):
+        self._field_args = field_args                                
+        super(AddArgsMixin, self).__init__(name, *args, **kwargs)
+
+class StringField(AddArgsMixin, _StringField):
+    pass
+
+
+class SubmitField(AddArgsMixin, _SubmitField):
+    pass
+
+
+class TelField(AddArgsMixin, _TelField):
+    pass
+
+
+class EmailField(AddArgsMixin, _EmailField):
+    pass
 
 class ContactForm(FlaskForm):
-    name = StringField('Name', validators=[DataRequired(), Length(min=-1, max=80, message='You cannot have more than 80 characters')])
-    surname = StringField('Surname', validators=[Length(min=-1, max=100, message='You cannot have more than 100 characters')])
-    email = StringField('E-Mail', validators=[Email(), Length(min=-1, max=200, message='You cannot have more than 200 characters')])
-    phone = StringField('Phone', validators=[Length(min=-1, max=20, message='You cannot have more than 20 characters')])
+    name = StringField('Name', dict(class_='form-control'), validators=[DataRequired(), Length(min=-1, max=80, message='You cannot have more than 80 characters')])
+    surname = StringField('Surname', field_args=dict(class_='form-control'), validators=[
+                          Length(min=-1, max=100, message='You cannot have more than 100 characters')])
+    email = EmailField('E-Mail', field_args=dict(class_='form-control'), validators=[
+                       Email(), Length(min=-1, max=200, message='You cannot have more than 200 characters')])
+    phone = TelField('Phone', field_args=dict(class_='form-control'), validators=[
+                     Length(min=-1, max=20, message='You cannot have more than 20 characters')])
+    add = SubmitField('Add', field_args=dict(class_='btn btn-success'))
+
+