additions for base fields

forms.py

@@ -1,12 +1,11 @@
 from flask_wtf import FlaskForm
-from wtforms import StringField, PasswordField, BooleanField
+from wtforms import StringField, PasswordField, BooleanField, Form
 from wtforms.validators import DataRequired, Email, Length, EqualTo
 
-
-class LoginForm(FlaskForm):
-    '''
-    Form Login
-    '''
+class EmailFieldMixin(Form):
+    """
+        mixin class to provide email field to forms
+    """
     email = StringField(
         'Email',
         validators=[
@@ -14,6 +13,24 @@ class LoginForm(FlaskForm):
             Email()
         ]
     )
+
+class PasswordFieldMixin(Form):
+    """
+        mixin class to provide password field
+    """
+    def __init__(self, *args, **kwargs):
+        super(PasswordFieldMixin, self).__init__(*args, **kwargs)
+        password_field = self._fields.pop('password')
+        self._fields['password'] = password_field
+        if 'password_confirm' in self._fields:
+            self._fields['password'].validators.append(
+                EqualTo(
+                    'password_confirm',
+                    'Passwords are not the same.'
+                )
+            )
+            confirm_password_field = self._fields.pop('password_confirm')
+            self._fields['password_confirm'] = confirm_password_field
     password = PasswordField(
         'Password',
         validators=[
@@ -21,8 +38,12 @@ class LoginForm(FlaskForm):
         ]
     )
 
+class LoginForm(FlaskForm, EmailFieldMixin, PasswordFieldMixin):
+    '''
+    Form Login
+    '''
     
-class SignupForm(FlaskForm):
+class SignupForm(FlaskForm, EmailFieldMixin, PasswordFieldMixin):
     '''
     Form signup
     '''
@@ -30,26 +51,10 @@ class SignupForm(FlaskForm):
         'Username',
         validators=[
             DataRequired(),
-            Length(5, 30, '''
-            You can not have less than 5 characters or more 30.
-            ''')
-            ]
-        )
-    email = StringField(
-        'Email',
-        validators=[
-            DataRequired(),
-            Email(),
-            Length(1, 254, 'Too long.')
-            ]
-        )
-    password = PasswordField(
-        'Password',
-        validators=[
-            DataRequired(),
-            EqualTo(
-                'password_confirm',
-                'Passwords are not the same.'
+            Length(
+                5, # min
+                30, # max
+                'You can not have less than 5 characters or more 30.' # error message
             )
         ]
     )    
@@ -60,33 +65,18 @@ class SignupForm(FlaskForm):
             DataRequired('Please accept the terms and conditions.')
         ]
     )
+    def __init__(self, *args, **kwargs):
+        super(SignupForm, self).__init__(*args, **kwargs)
+        tos = self._fields.pop('accept_tos')
+        self._fields['accept_tos'] = tos
 
-
-class EmailResetPasswordForm(FlaskForm):
+class EmailResetPasswordForm(FlaskForm, EmailFieldMixin):
     '''
     Form send email reset password
     '''
-    email = StringField(
-        'Email',
-        validators=[
-            DataRequired(),
-            Email()
-            ]
-        )
-
 
 class ResetPasswordForm(FlaskForm):
     '''
     Form update password
     '''    
-    password = PasswordField(
-        'Password',
-        validators=[
-            DataRequired(),
-            EqualTo(
-                'password_confirm',
-                'Passwords are not the same.'
-                )
-            ]
-        )
     password_confirm = PasswordField('Repeat password')