feat: setting email template content (#15974)

* feat: setting email template content

* perf: tempale list

* perf: custom template render to string

* perf: content serialize valid

* perf: Custom msg template base class

* perf: Template content reset

* perf: Update templates config

* perf: Remove useless code

---------

Co-authored-by: wangruidong <940853815@qq.com>

apps/acls/notifications.py

@@ -5,12 +5,23 @@ from accounts.models import Account
 from acls.models import LoginACL, LoginAssetACL
 from assets.models import Asset
 from audits.models import UserLoginLog
+from common.views.template import custom_render_to_string
 from notifications.notifications import UserMessage
 from users.models import User
 
 
 class UserLoginReminderMsg(UserMessage):
     subject = _('User login reminder')
+    template_name = 'acls/user_login_reminder.html'
+    contexts = [
+        {"name": "city", "label": _('Login city'), "default": "北京"},
+        {"name": "username", "label": _('User'), "default": "zhangsan"},
+        {"name": "ip", "label": "IP", "default": "8.8.8.8"},
+        {"name": "recipient_name", "label": '接收人名称', "default": "zhangsan"},
+        {"name": "recipient_username", "label": '接收人用户名', "default": "张三"},
+        {"name": "user_agent", "label": _('User agent'), "default": "Mozilla/5.0"},
+        {"name": "acl_name", "label": _('ACL name'), "default": "login acl"},
+    ]
 
     def __init__(self, user, user_log: UserLoginLog, acl: LoginACL):
         self.user_log = user_log
@@ -23,11 +34,12 @@ class UserLoginReminderMsg(UserMessage):
             'ip': user_log.ip,
             'city': user_log.city,
             'username': user_log.username,
-            'recipient': self.user,
             'acl_name': self.acl_name,
+            'recipient_name': self.user.name,
+            'recipient_username': self.user.username,
             'user_agent': user_log.user_agent,
         }
-        message = render_to_string('acls/user_login_reminder.html', context)
+        message = custom_render_to_string(self.template_name, context)
 
         return {
             'subject': str(self.subject),
@@ -43,6 +55,18 @@ class UserLoginReminderMsg(UserMessage):
 
 class AssetLoginReminderMsg(UserMessage):
     subject = _('User login alert for asset')
+    template_name = 'acls/asset_login_reminder.html'
+    contexts = [
+        {"name": "city", "label": _('Login city'), "default": "北京"},
+        {"name": "username", "label": _('User'), "default": "zhangsan"},
+        {"name": "name", "label": _('Name'), "default": "zhangsan"},
+        {"name": "asset", "label": _('Asset'), "default": "dev server"},
+        {"name": "recipient_name", "label": '接收人名称', "default": "zhangsan"},
+        {"name": "recipient_username", "label": '接收人用户名', "default": "张三"},
+        {"name": "account", "label": _('Account Input username'), "default": "root"},
+        {"name": "account_name", "label": _('Account name'), "default": "root"},
+        {"name": "acl_name", "label": _('ACL name'), "default": "login acl"},
+    ]
 
     def __init__(
             self, user, asset: Asset, login_user: User,
@@ -51,6 +75,7 @@ class AssetLoginReminderMsg(UserMessage):
     ):
         self.ip = ip
         self.asset = asset
+        self.login_user = login_user
         self.account = account
         self.acl_name = str(acl)
         self.login_user = login_user
@@ -60,7 +85,8 @@ class AssetLoginReminderMsg(UserMessage):
     def get_html_msg(self) -> dict:
         context = {
             'ip': self.ip,
-            'recipient': self.user,
+            'recipient_name': self.user.name,
+            'recipient_username': self.user.username,
             'username': self.login_user.username,
             'name': self.login_user.name,
             'asset': str(self.asset),
@@ -68,7 +94,7 @@ class AssetLoginReminderMsg(UserMessage):
             'account_name': self.account.name,
             'acl_name': self.acl_name,
         }
-        message = render_to_string('acls/asset_login_reminder.html', context)
+        message = custom_render_to_string(self.template_name, context)
 
         return {
             'subject': str(self.subject),

apps/acls/templates/acls/user_login_reminder.html

@@ -1,6 +1,6 @@
 {% load i18n %}
 
-<h3>{% trans 'Dear' %}: {{ recipient.name }}[{{ recipient.username }}]</h3>
+<h3>{% trans 'Dear' %}: {{ recipient_name }}[{{ recipient_username }}]</h3>
 <hr>
 <p>{% trans 'We would like to inform you that a user has recently logged:' %}<p>
 <p><strong>{% trans 'User details' %}:</strong></p>

apps/authentication/notifications.py

@@ -1,14 +1,24 @@
-from django.template.loader import render_to_string
 from django.utils.translation import gettext as _
 
 from common.utils import get_logger
 from common.utils.timezone import local_now_display
+from common.views.template import custom_render_to_string
 from notifications.notifications import UserMessage
 
 logger = get_logger(__file__)
 
 
 class DifferentCityLoginMessage(UserMessage):
+    subject = _('Different city login reminder')
+    template_name = 'authentication/_msg_different_city.html'
+    contexts = [
+        {"name": "city", "label": _('Login city'), "default": "北京"},
+        {"name": "username", "label": _('User'), "default": "zhangsan"},
+        {"name": "name", "label": _('Name'), "default": "zhangsan"},
+        {"name": "ip", "label": "IP", "default": "8.8.8.8"},
+        {"name": "time", "label": _('Login Date'), "default": "2025-01-01 12:00:00"},
+    ]
+
     def __init__(self, user, ip, city):
         self.ip = ip
         self.city = city
@@ -16,18 +26,16 @@ class DifferentCityLoginMessage(UserMessage):
 
     def get_html_msg(self) -> dict:
         now = local_now_display()
-        subject = _('Different city login reminder')
         context = dict(
-            subject=subject,
             name=self.user.name,
             username=self.user.username,
             ip=self.ip,
             time=now,
             city=self.city,
         )
-        message = render_to_string('authentication/_msg_different_city.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -41,6 +49,16 @@ class DifferentCityLoginMessage(UserMessage):
 
 
 class OAuthBindMessage(UserMessage):
+    subject = _('OAuth binding reminder')
+    template_name = 'authentication/_msg_oauth_bind.html'
+    contexts = [
+        {"name": "username", "label": _('User'), "default": "zhangsan"},
+        {"name": "name", "label": _('Name'), "default": "zhangsan"},
+        {"name": "ip", "label": "IP", "default": "8.8.8.8"},
+        {"name": "oauth_name", "label": _('OAuth name'), "default": "WeCom"},
+        {"name": "oauth_id", "label": _('OAuth ID'), "default": "000001"},
+    ]
+
     def __init__(self, user, ip, oauth_name, oauth_id):
         super().__init__(user)
         self.ip = ip
@@ -51,7 +69,6 @@ class OAuthBindMessage(UserMessage):
         now = local_now_display()
         subject = self.oauth_name + ' ' + _('binding reminder')
         context = dict(
-            subject=subject,
             name=self.user.name,
             username=self.user.username,
             ip=self.ip,
@@ -59,7 +76,7 @@ class OAuthBindMessage(UserMessage):
             oauth_name=self.oauth_name,
             oauth_id=self.oauth_id
         )
-        message = render_to_string('authentication/_msg_oauth_bind.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
             'subject': subject,
             'message': message

apps/authentication/templates/authentication/_msg_reset_password.html

@@ -6,12 +6,12 @@
     {% trans 'Please click the link below to reset your password, if not your request, concern your account security' %}
     <br>
     <br>
-    <a href="{{ rest_password_url }}?token={{ rest_password_token}}" class='showLink' target="_blank">
+    <a href="{{ rest_password_url }}?token={{ rest_password_token }}" class='showLink' target="_blank">
         {% trans 'Click here reset password' %}
     </a>
 </p>
 <br>
 <p>
     {% trans 'This link is valid for 1 hour. After it expires' %}
-    <a href="{{ forget_password_url }}?email={{ user.email }}">{% trans 'request new one' %}</a>
+    <a href="{{ forget_password_url }}?email={{ email }}">{% trans 'request new one' %}</a>
 </p>

apps/common/views/template.py

@@ -0,0 +1,43 @@
+import logging
+import os
+
+from django.conf import settings
+from django.template import Context
+from django.template import Engine, TemplateSyntaxError
+from django.template.loader import render_to_string
+from django.utils._os import safe_join
+
+logger = logging.getLogger(__name__)
+
+
+def safe_render_to_string(template_name, context=None, request=None, using=None):
+    with open(template_name, encoding="utf-8") as f:
+        template_code = f.read()
+        safe_engine = Engine(
+            debug=False,
+            libraries={},  # 禁用自定义 tag 库
+            builtins=[],  # 不自动加载内置标签
+        )
+        try:
+            template = safe_engine.from_string(template_code)
+        except TemplateSyntaxError as e:
+            logger.error(e)
+            return template_code
+        return template.render(Context(context or {}))
+
+
+def _get_data_template_path(template_name: str):
+    # 保存到 data/template/<原路径>.html
+    # 例如 template_name users/_msg_x.html -> data/template/users/_msg_x.html
+    rel_path = template_name.replace('/', os.sep)
+    return safe_join(settings.DATA_DIR, 'template', rel_path)
+
+
+def custom_render_to_string(template_name, context=None, request=None, using=None):
+    # 如果自定的义模板存在，则使用自定义模板，否则使用系统模板
+    custom_template = _get_data_template_path(template_name)
+    if os.path.exists(custom_template):
+        template = safe_render_to_string(custom_template, context=context, request=request, using=using)
+    else:
+        template = render_to_string(template_name, context=context, request=request, using=using)
+    return template

apps/notifications/api/notifications.py

@@ -1,20 +1,28 @@
+import os
+
+from django.template.loader import render_to_string
+from rest_framework import status
+from rest_framework.decorators import action
 from rest_framework.mixins import ListModelMixin, UpdateModelMixin, RetrieveModelMixin
 from rest_framework.response import Response
 from rest_framework.views import APIView
 
 from common.api import JMSGenericViewSet
-from common.permissions import IsValidUser
+from common.permissions import OnlySuperUser, IsValidUser
+from common.views.template import _get_data_template_path
 from notifications.backends import BACKEND
 from notifications.models import SystemMsgSubscription, UserMsgSubscription
+from notifications.notifications import CustomMsgTemplateBase
 from notifications.notifications import system_msgs
 from notifications.serializers import (
     SystemMsgSubscriptionSerializer, SystemMsgSubscriptionByCategorySerializer,
     UserMsgSubscriptionSerializer,
 )
+from notifications.serializers import TemplateEditSerializer
 
 __all__ = (
     'BackendListView', 'SystemMsgSubscriptionViewSet',
-    'UserMsgSubscriptionViewSet', 'get_all_test_messages'
+    'UserMsgSubscriptionViewSet', 'get_all_test_messages', 'TemplateViewSet',
 )
 
 
@@ -130,3 +138,72 @@ def get_all_test_messages(request):
         <hr />
         """).format(msg_cls.__name__, msg_text)
     return HttpResponse(html_data + text_data)
+
+
+class TemplateViewSet(JMSGenericViewSet):
+    permission_classes = [OnlySuperUser]
+
+    def list(self, request):
+        result = []
+        metas = [cls.as_dict() for cls in CustomMsgTemplateBase._registry]
+        for meta in metas:
+            item = {
+                'template_name': meta['template_name'],
+                'subject': meta.get('subject', ''),
+                'contexts': meta.get('contexts', []),
+                'content': None,
+                'content_error': None,
+                'source': None,
+            }
+
+            data_path = _get_data_template_path(meta['template_name'])
+            try:
+                if os.path.exists(data_path):
+                    with open(data_path, 'r', encoding='utf-8') as f:
+                        item['content'] = f.read()
+                    item['source'] = 'data'
+                else:
+                    ctx = {x.get('name'): x.get('default') for x in item['contexts']}
+                    try:
+                        rendered = render_to_string(meta['template_name'], ctx)
+                        item['content'] = rendered
+                        item['source'] = 'original'
+                    except Exception as e:
+                        item['content_error'] = str(e)
+                        item['source'] = 'original_error'
+            except Exception as e:
+                item['content_error'] = str(e)
+            result.append(item)
+
+        return Response(result)
+
+    @action(detail=False, methods=['patch'], url_path='edit', name='edit')
+    def edit(self, request):
+        """保存前端编辑的模板内容到 data/template/<template_name> 目录"""
+
+        serializer = TemplateEditSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        template_name = serializer.validated_data['EMAIL_TEMPLATE_NAME']
+        content = serializer.validated_data['EMAIL_TEMPLATE_CONTENT']
+
+        data_path = _get_data_template_path(template_name)
+        data_dir = os.path.dirname(data_path)
+        try:
+            os.makedirs(data_dir, exist_ok=True)
+            with open(data_path, 'w', encoding='utf-8') as f:
+                f.write(content)
+        except Exception as e:
+            return Response({'ok': False, 'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+
+        return Response({'ok': True, 'path': data_path})
+
+    @action(detail=False, methods=['post'], url_path='reset', name='reset')
+    def reset(self, request):
+        template_name = request.data.get('template_name')
+        data_path = _get_data_template_path(template_name)
+        try:
+            if os.path.exists(data_path):
+                os.remove(data_path)
+        except Exception as e:
+            return Response({'ok': False, 'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
+        return Response({'ok': True, 'path': data_path})

apps/notifications/notifications.py

@@ -54,7 +54,24 @@ def publish_task(receive_user_ids, backends_msg_mapper):
     Message.send_msg(receive_user_ids, backends_msg_mapper)
 
 
-class Message(metaclass=MessageType):
+class CustomMsgTemplateBase:
+    _registry = []
+
+    def __init_subclass__(cls, **kwargs):
+        super().__init_subclass__(**kwargs)
+        if cls is not CustomMsgTemplateBase and getattr(cls, "template_name", None):
+            CustomMsgTemplateBase._registry.append(cls)
+
+    @classmethod
+    def as_dict(cls):
+        return {
+            "template_name": cls.template_name,
+            "subject": cls.subject,
+            "contexts": cls.contexts,
+        }
+
+
+class Message(CustomMsgTemplateBase, metaclass=MessageType):
     """
     这里封装了什么？
         封装不同消息的模板，提供统一的发送消息的接口

apps/notifications/serializers/notifications.py

@@ -1,3 +1,4 @@
+from django.template import Engine, TemplateSyntaxError
 from rest_framework import serializers
 
 from common.serializers import BulkModelSerializer
@@ -40,3 +41,16 @@ class UserMsgSubscriptionSerializer(BulkModelSerializer):
     class Meta:
         model = UserMsgSubscription
         fields = ('user_id', 'receive_backends',)
+
+
+class TemplateEditSerializer(serializers.Serializer):
+    EMAIL_TEMPLATE_NAME = serializers.CharField(max_length=256)
+    EMAIL_TEMPLATE_CONTENT = serializers.CharField()
+
+    def validate_EMAIL_TEMPLATE_CONTENT(self, value):
+        safe_engine = Engine(debug=False, libraries={}, builtins=[])
+        try:
+            safe_engine.from_string(value)
+        except TemplateSyntaxError as e:
+            raise serializers.ValidationError(f'Template syntax error at: {e.token.lineno}')
+        return value

apps/notifications/urls/api_urls.py

@@ -10,9 +10,9 @@ router = BulkRouter()
 router.register('system-msg-subscription', api.SystemMsgSubscriptionViewSet, 'system-msg-subscription')
 router.register('user-msg-subscription', api.UserMsgSubscriptionViewSet, 'user-msg-subscription')
 router.register('site-messages', api.SiteMessageViewSet, 'site-message')
-
+router.register('templates', api.TemplateViewSet, 'template')
 urlpatterns = [
-    path('backends/', api.BackendListView.as_view(), name='backends')
+    path('backends/', api.BackendListView.as_view(), name='backends'),
 ]
 urlpatterns += router.urls
 

apps/settings/serializers/msg.py

@@ -8,7 +8,7 @@ from common.serializers.fields import EncryptedField
 
 __all__ = [
     'MailTestSerializer', 'EmailSettingSerializer',
-    'EmailContentSettingSerializer', 'SMSBackendSerializer',
+    'EmailContentSettingSerializer', 'SMSBackendSerializer'
 ]
 
 
@@ -35,7 +35,8 @@ class EmailSettingSerializer(serializers.Serializer):
     )
     EMAIL_HOST_PASSWORD = EncryptedField(
         max_length=1024, required=False, label=_("Password"),
-        help_text=_("Password to use for the email server. It is used in conjunction with `Account` when authenticating to the email server")
+        help_text=_(
+            "Password to use for the email server. It is used in conjunction with `Account` when authenticating to the email server")
     )
     EMAIL_FROM = serializers.CharField(
         max_length=128, allow_blank=True, required=False, label=_('Sender'),

apps/terminal/notifications.py

@@ -8,6 +8,7 @@ from common.sdk.im.wecom import wecom_tool
 from common.utils import get_logger, reverse
 from common.utils import lazyproperty
 from common.utils.timezone import local_now_display
+from common.views.template import custom_render_to_string
 from notifications.backends import BACKEND
 from notifications.models import SystemMsgSubscription
 from notifications.notifications import SystemMessage, UserMessage
@@ -280,7 +281,17 @@ class StorageConnectivityMessage(SystemMessage):
 
 
 class SessionSharingMessage(UserMessage):
+    subject = _('Session sharing')
     message_type_label = _('Session sharing')
+    template_name = 'terminal/_msg_session_sharing.html'
+    contexts = [
+        {"name": "asset", "label": _('Asset'), "default": "dev server"},
+        {"name": "created_by", "label": _('Created by'), "default": "2025-01-01 10:00:00"},
+        {"name": "account", "label": _('Account'), "default": "root"},
+        {"name": "url", "label": _('URL'), "default": "http://example.com/session/xxxx"},
+        {"name": "verify_code", "label": _('Verify code'), "default": "123456"},
+        {"name": "org", "label": _('Organization'), "default": "Default Default"},
+    ]
 
     def __init__(self, user, instance):
         super().__init__(user)
@@ -289,14 +300,14 @@ class SessionSharingMessage(UserMessage):
     def get_html_msg(self) -> dict:
         instance = self.instance
         context = {
-            'asset': instance.session.asset,
+            'asset': str(instance.session.asset),
             'created_by': instance.created_by,
-            'account': instance.session.account,
+            'account': str(instance.session.account),
             'url': instance.url,
             'verify_code': instance.verify_code,
             'org': instance.org_name,
         }
-        message = render_to_string('terminal/_msg_session_sharing.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
             'subject': self.message_type_label + ' ' + self.instance.created_by,
             'message': message

apps/users/notifications.py

@@ -7,10 +7,25 @@ from django.utils import timezone
 from django.utils.translation import gettext as _
 
 from common.utils import reverse, get_request_ip_or_data, get_request_user_agent
+from common.views.template import custom_render_to_string
 from notifications.notifications import UserMessage
 
 
 class UserCreatedMsg(UserMessage):
+    subject = str(settings.EMAIL_CUSTOM_USER_CREATED_SUBJECT)
+    template_name = 'users/_msg_user_created.html'
+    contexts = [
+        {"name": "honorific", "label": _('Honorific'), "default": "zhangsan"},
+        {"name": "content", "label": _('Content'), "default": "Welcome to use our system."},
+        {"name": "username", "label": _('Username'), "default": "zhangsan"},
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "email", "label": _('Email'), "default": "123456@qq.com"},
+        {"name": "rest_password_url", "label": _('Reset password url'),
+         "default": "https://example.com/reset-password"},
+        {"name": "rest_password_token", "label": _('Reset password token'), "default": "abcdefg1234567"},
+        {"name": "forget_password_url", "label": _('Login url'), "default": "https://example.com/forget-password"},
+    ]
+
     def get_html_msg(self) -> dict:
         user = self.user
 
@@ -27,13 +42,12 @@ class UserCreatedMsg(UserMessage):
 
         context = {
             **mail_context,
-            'user': user,
+            **user_info,
             'rest_password_url': reverse('authentication:reset-password', external=True),
             'rest_password_token': user.generate_reset_token(),
-            'forget_password_url': reverse('authentication:forgot-password', external=True),
+            'forget_password_url': reverse('authentication:login', external=True),
-            'login_url': reverse('authentication:login', external=True),
         }
-        message = render_to_string('users/_msg_user_created.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
             'subject': mail_context['subject'],
             'message': message
@@ -46,15 +60,25 @@ class UserCreatedMsg(UserMessage):
 
 
 class ResetPasswordMsg(UserMessage):
+    subject = _('Reset password')
+    template_name = 'authentication/_msg_reset_password.html'
+    contexts = [
+        {"name": "email", "label": _('Email'), "default": "123456@qq.com"},
+        {"name": "rest_password_url", "label": _('Reset password url'),
+         "default": "https://example.com/reset-password"},
+        {"name": "rest_password_token", "label": _('Reset password token'), "default": "abcdefg1234567"},
+        {"name": "forget_password_url", "label": _('Login url'), "default": "https://example.com/forget-password"},
+        {"name": "login_url", "label": _('Login url'), "default": "https://example.com/login"},
+    ]
+
     def __init__(self, user):
         super().__init__(user)
         self.reset_passwd_token = user.generate_reset_token()
 
     def get_html_msg(self) -> dict:
         user = self.user
-        subject = _('Reset password')
         context = {
-            'user': user,
+            'email': user.email,
             'rest_password_url': reverse('authentication:reset-password', external=True),
             'rest_password_token': self.reset_passwd_token,
             'forget_password_url': reverse('authentication:forgot-password', external=True),
@@ -62,7 +86,7 @@ class ResetPasswordMsg(UserMessage):
         }
         message = render_to_string('authentication/_msg_reset_password.html', context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -74,6 +98,14 @@ class ResetPasswordMsg(UserMessage):
 
 
 class ResetPasswordSuccessMsg(UserMessage):
+    subject = _('Reset password success')
+    template_name = 'authentication/_msg_rest_password_success.html'
+    contexts = [
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "ip_address", "label": _('IP address'), "default": "192.168.1.1"},
+        {"name": "browser", "label": _('Browser'), "default": "Mozilla/firefox"}
+    ]
+
     def __init__(self, user, request):
         super().__init__(user)
         self.ip_address = get_request_ip_or_data(request)
@@ -82,15 +114,14 @@ class ResetPasswordSuccessMsg(UserMessage):
     def get_html_msg(self) -> dict:
         user = self.user
 
-        subject = _('Reset password success')
         context = {
             'name': user.name,
             'ip_address': self.ip_address,
             'browser': self.browser,
         }
-        message = render_to_string('authentication/_msg_rest_password_success.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -106,6 +137,14 @@ class ResetPasswordSuccessMsg(UserMessage):
 
 
 class ResetPublicKeySuccessMsg(UserMessage):
+    subject = _('Reset public key success')
+    template_name = 'authentication/_msg_rest_public_key_success.html'
+    contexts = [
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "ip_address", "label": _('IP address'), "default": "192.168.1.1"},
+        {"name": "browser", "label": _('Browser'), "default": "Mozilla/firefox"}
+    ]
+
     def __init__(self, user, request):
         super().__init__(user)
         self.ip_address = get_request_ip_or_data(request)
@@ -114,15 +153,14 @@ class ResetPublicKeySuccessMsg(UserMessage):
     def get_html_msg(self) -> dict:
         user = self.user
 
-        subject = _('Reset public key success')
         context = {
             'name': user.name,
             'ip_address': self.ip_address,
             'browser': self.browser,
         }
-        message = render_to_string('authentication/_msg_rest_public_key_success.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -138,9 +176,20 @@ class ResetPublicKeySuccessMsg(UserMessage):
 
 
 class PasswordExpirationReminderMsg(UserMessage):
+    subject = _('Password is about expire')
+    template_name = 'users/_msg_password_expire_reminder.html'
+    contexts = [
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "date_password_expired", "label": _('Password expiration date'), "default": "2025-01-01 12:00:00"},
+        {"name": "update_password_url", "label": _('Update password url'),
+         "default": "https://example.com/update-password"},
+        {"name": "forget_password_url", "label": _('Login url'), "default": "https://example.com/forget-password"},
+        {"name": "email", "label": _('Email'), "default": "123456@qq.com"},
+        {"name": "login_url", "label": _('Login url'), "default": "https://example.com/login"},
+    ]
+
     def get_html_msg(self) -> dict:
         user = self.user
-        subject = _('Password is about expire')
 
         date_password_expired_local = timezone.localtime(user.date_password_expired)
         update_password_url = urljoin(settings.SITE_URL, '/ui/#/profile/index')
@@ -153,9 +202,9 @@ class PasswordExpirationReminderMsg(UserMessage):
             'email': user.email,
             'login_url': reverse('authentication:login', external=True),
         }
-        message = render_to_string('users/_msg_password_expire_reminder.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -167,17 +216,23 @@ class PasswordExpirationReminderMsg(UserMessage):
 
 
 class UserExpirationReminderMsg(UserMessage):
+    subject = _('Account is about expire')
+    template_name = 'users/_msg_account_expire_reminder.html'
+    contexts = [
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "date_expired", "label": _('Expiration date'), "default": "2025-01-01 12:00:00"}
+    ]
+
     def get_html_msg(self) -> dict:
-        subject = _('Account is about expire')
         date_expired_local = timezone.localtime(self.user.date_expired)
         date_expired = date_expired_local.strftime('%Y-%m-%d %H:%M:%S')
         context = {
             'name': self.user.name,
             'date_expired': date_expired
         }
-        message = render_to_string('users/_msg_account_expire_reminder.html', context)
+        message = render_to_string(self.template_name, context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -189,16 +244,22 @@ class UserExpirationReminderMsg(UserMessage):
 
 
 class ResetSSHKeyMsg(UserMessage):
+    subject = _('Reset SSH Key')
+    template_name = 'users/_msg_reset_ssh_key.html'
+    contexts = [
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "url", "label": _('Update SSH Key url'), "default": "https://example.com/profile/password-and-ssh-key"}
+    ]
+
     def get_html_msg(self) -> dict:
-        subject = _('Reset SSH Key')
         update_url = urljoin(settings.SITE_URL, '/ui/#/profile/password-and-ssh-key/?tab=SSHKey')
         context = {
             'name': self.user.name,
             'url': update_url,
         }
-        message = render_to_string('users/_msg_reset_ssh_key.html', context)
+        message = custom_render_to_string(self.template_name, context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 
@@ -210,15 +271,21 @@ class ResetSSHKeyMsg(UserMessage):
 
 
 class ResetMFAMsg(UserMessage):
+    subject = _('Reset MFA')
+    template_name = 'users/_msg_reset_mfa.html'
+    contexts = [
+        {"name": "name", "label": _('Name'), "default": "张三"},
+        {"name": "url", "label": _('Reset MFA url'), "default": "https://example.com/profile/mfa"}
+    ]
+
     def get_html_msg(self) -> dict:
-        subject = _('Reset MFA')
         context = {
             'name': self.user.name,
             'url': reverse('authentication:user-otp-enable-start', external=True),
         }
-        message = render_to_string('users/_msg_reset_mfa.html', context)
+        message = custom_render_to_string('users/_msg_reset_mfa.html', context)
         return {
-            'subject': subject,
+            'subject': self.subject,
             'message': message
         }
 

apps/users/templates/users/_msg_user_created.html

@@ -1,7 +1,7 @@
 {% load i18n %}
 
 <p>
-    {{ honorific }} {{ user }},
+    {{ honorific }} {{ name }},
 </p>
 
 <div>
@@ -9,15 +9,15 @@
         {{ content | safe }}
     </p>
     <p>
-        {% trans 'Username' %}: {{ user.username }} <br />
+        {% trans 'Username' %}: {{ username }} <br/>
         {% trans 'Password' %}:
-        <a href="{{ rest_password_url}}?token={{ rest_password_token }}">
+        <a href="{{ rest_password_url }}?token={{ rest_password_token }}">
             {% trans 'click here to set your password' %}
         </a>
     </p>
     <br>
     <p>
-          {% trans 'This link is valid for 1 hour. After it expires' %}
+        {% trans 'This link is valid for 1 hour. After it expires' %}
-          <a href="{{ forget_password_url }}?email={{ user.email }}">{% trans 'request new one' %}</a>
+        <a href="{{ forget_password_url }}?email={{ email }}">{% trans 'request new one' %}</a>
     </p>
 </div>