[IMP] website_blog: use teaser in rss and not subtitle

This commit closes PR #17942

addons/website_blog/controllers/main.py

@@ -178,6 +178,7 @@ class WebsiteBlog(http.Controller):
         v['blog'] = blog
         v['base_url'] = request.env['ir.config_parameter'].get_param('web.base.url')
         v['posts'] = request.env['blog.post'].search([('blog_id','=', blog.id)], limit=min(int(limit), 50))
+        v['html2plaintext'] = html2plaintext
         r = request.render("website_blog.blog_feed", v, headers=[('Content-Type', 'application/atom+xml')])
         return r
 

addons/website_blog/views/website_blog_templates.xml

@@ -557,7 +557,7 @@
         <link t-att-href="'%s%s' % (base_url, post.website_url)"/>
         <id t-esc="'%s%s' % (base_url, post.website_url)"/>
         <author><name t-esc="post.sudo().author_id.name"/></author>
-        <summary t-esc="post.subtitle"/>
+        <summary t-esc="html2plaintext(post.teaser)"/>
         <updated t-esc="post.write_date.replace(' ', 'T') + 'Z'"/>
     </entry>
 </feed>