[FIX] website_slides: changes enroll_msg default value

SPECIFICATION

Changes enroll_msg default value to 'Contact Responsible' instead
of testing if it was empty or not. Since the FieldHtml widget sets
the default value to '<p><br></p>' it was never empty.

LINKS

Task ID : 2127364
PR : #40708

addons/website_slides/models/slide_channel.py

@@ -85,6 +85,9 @@ class Channel(models.Model):
     def _default_access_token(self):
         return str(uuid.uuid4())
 
+    def _get_default_enroll_msg(self):
+        return _('Contact Responsible')
+
     # description
     name = fields.Char('Name', translate=True, required=True)
     active = fields.Boolean(default=True, tracking=100)
@@ -145,7 +148,7 @@ class Channel(models.Model):
         help='Condition to enroll: everyone, on invite, on payment (sale bridge).')
     enroll_msg = fields.Html(
         'Enroll Message', help="Message explaining the enroll process",
-        default=False, translate=tools.html_translate, sanitize_attributes=False)
+        default=_get_default_enroll_msg, translate=tools.html_translate, sanitize_attributes=False)
     enroll_group_ids = fields.Many2many('res.groups', string='Auto Enroll Groups', help="Members of those groups are automatically added as members of the channel.")
     visibility = fields.Selection([
         ('public', 'Public'), ('members', 'Members Only')],

addons/website_slides/views/website_slides_templates_course.xml

@@ -296,8 +296,7 @@
                 </a>
                 <div t-if="not channel.is_member and channel.enroll == 'invite'" class="text-center">
                     <div class="alert my-0 bg-100 p-2">Private Course</div>
-                    <div t-if="channel.enroll_msg" t-field="channel.enroll_msg"/>
-                    <small t-if="not channel.enroll_msg">Contact website administrator.</small>
+                    <div class="o_wslides_enroll_msg mt-2" t-field="channel.enroll_msg"/>
                 </div>
                 <t t-if="channel.is_member">
                     <button class="d-flex align-items-center alert my-0 px-2 px-xl-3 bg-100 w-100 o_wslides_js_channel_unsubscribe"