Simplify trigger action

issue9096

locale/ca.po

@@ -302,6 +302,10 @@ msgctxt "selection:electronic.mail.template,engine:"
 msgid "Python"
 msgstr "Python"
 
+msgctxt "selection:ir.trigger,action:"
+msgid "Email Template"
+msgstr "Plantilla correu"
+
 msgctxt "view:electronic.mail.send.template.start:"
 msgid "Body HTML"
 msgstr "HTML body"

locale/es.po

@@ -307,6 +307,10 @@ msgctxt "selection:electronic.mail.template,engine:"
 msgid "Python"
 msgstr "Python"
 
+msgctxt "selection:ir.trigger,action:"
+msgid "Email Template"
+msgstr "Plantilla correu"
+
 msgctxt "view:electronic.mail.send.template.start:"
 msgid "Body HTML"
 msgstr "Texto HTML"

trigger.py

@@ -12,10 +12,15 @@ class Trigger(metaclass=PoolMeta):
     __name__ = 'ir.trigger'
     email_template = fields.Many2One('electronic.mail.template', 'Template')
 
+    @classmethod
+    def __setup__(cls):
+        super().__setup__()
+        cls.action.selection.append(
+            ('electronic.mail.template|mail_from_trigger', "Email Template"),
+            )
+
     @staticmethod
     def default_model():
-        Model = Pool().get('ir.model')
-
         model = Transaction().context.get('model', None)
         if model:
             return model

view/trigger_form.xml

@@ -2,7 +2,7 @@
 <!-- This file is part electronic_mail module for Tryton.
 The COPYRIGHT file at the top level of this repository contains the full copyright notices and license terms. -->
 <data>
-    <xpath expr="/form/field[@name='action_function']" position="after">
+    <xpath expr="/form/field[@name='action']" position="after">
         <label name="email_template"/>
         <field name="email_template" readonly="1"/>
     </xpath>