Add function to change user email

app/auth/forms.py

@@ -1,5 +1,5 @@
 from flask_wtf import FlaskForm
-from wtforms import StringField, PasswordField, BooleanField, SubmitField, ValidationError
+from wtforms import StringField, PasswordField, BooleanField, SubmitField, ValidationError, TextAreaField
 from wtforms.validators import DataRequired, Length, Email, Regexp, EqualTo
 from ..models import User
 
@@ -76,3 +76,18 @@ class ChangePasswordForm(FlaskForm):
         ]
     )
     submit = SubmitField('Update Password')
+
+
+class EditProfileForm(FlaskForm):
+    email = StringField('Change Email', validators=[Length(0, 64),
+                                                    DataRequired()])
+    submit = SubmitField('Change Email')
+
+    def __init__(self, user, *args, **kwargs):
+        super(EditProfileForm, self).__init__(*args, **kwargs)
+        self.user = user
+
+    def validate_email(self, field):
+        if field.data != self.user.email and \
+                User.query.filter_by(email=field.data).first():
+            raise ValidationError('Email already registered!')

app/auth/views.py

@@ -2,7 +2,7 @@ from flask import flash, redirect, render_template, request, url_for
 from flask_login import current_user, login_required, login_user, logout_user
 from . import auth
 from .. import db
-from .forms import ChangePasswordForm, LoginForm, PasswordResetForm, PasswordResetRequestForm, RegistrationForm
+from .forms import ChangePasswordForm, LoginForm, PasswordResetForm, PasswordResetRequestForm, RegistrationForm, EditProfileForm
 from ..email import send_email
 from ..models import User
 
@@ -131,9 +131,9 @@ def password_reset(token):
                            title='Password Reset')
 
 
-@auth.route('/settings', methods=['GET', 'POST'])
+@auth.route('/edit_profile', methods=['GET', 'POST'])
 @login_required
-def settings():
+def edit_profile():
     """
     View where loged in User can change own User information like Password etc.
     """
@@ -144,11 +144,19 @@ def settings():
             db.session.add(current_user)
             db.session.commit()
             flash('Your password has been updated.')
-            return redirect(url_for('auth.settings'))
+            return redirect(url_for('auth.edit_profile'))
         else:
             flash('Invalid password.')
+    change_profile_form = EditProfileForm(user=current_user)
+    if change_profile_form.validate_on_submit():
+        current_user.email = change_profile_form.email.data
+        db.session.add(current_user._get_current_object())
+        db.session.commit()
+        flash('Your email has been updated.')
+    change_profile_form.email.data = current_user.email
     return render_template(
-        'auth/settings.html.j2',
-        form=change_password_form,
-        title='Settings'
+        'auth/edit_profile.html.j2',
+        change_password_form=change_password_form,
+        change_profile_form=change_profile_form,
+        title='Edit Profile'
     )