[IMP] sms: allow to preview a sms template

Add a way for the user to preview sms content from a sms
template depending of a record (targeted model) and the
installed languages (as for the mail template). Add button
to open this preview on the form of the sms template.

TASK_ID : 2053631

addons/sms/__manifest__.py

@@ -16,6 +16,7 @@ The service is provided by the In App Purchase Odoo platform.
         'data/ir_cron_data.xml',
         'wizard/sms_cancel_views.xml',
         'wizard/sms_composer_views.xml',
+        'wizard/sms_template_preview_views.xml',
         'wizard/sms_resend_views.xml',
         'views/ir_actions_views.xml',
         'views/res_config_settings_views.xml',

addons/sms/views/sms_template_views.xml

@@ -6,6 +6,11 @@
         <field name="arch" type="xml">
             <form string="SMS Templates">
                 <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <button class="oe_stat_button" name="%(sms_template_preview_action)d" icon="fa-search-plus" string="Preview"
+                        type="action" target="new"
+                        context="{'template_id':active_id}"/>
+                    </div>
                     <div class="oe_title">
                         <label for="name" class="oe_edit_only" string="SMS Template"/>
                         <h1><field name="name" required="1"/></h1>

addons/sms/wizard/__init__.py

@@ -3,3 +3,4 @@
 from . import sms_cancel
 from . import sms_composer
 from . import sms_resend
+from . import sms_template_preview

addons/sms/wizard/sms_template_preview.py

@@ -0,0 +1,53 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import api, fields, models
+
+
+class SMSTemplatePreview(models.TransientModel):
+    _inherit = "sms.template"
+    _name = "sms.template.preview"
+    _description = "SMS Template Preview"
+
+    @api.model
+    def _selection_target_model(self):
+        models = self.env['ir.model'].search([])
+        return [(model.model, model.name) for model in models]
+
+    @api.model
+    def _selection_languages(self):
+        return self.env['res.lang'].get_installed()
+
+    @api.model
+    def default_get(self, fields):
+        result = super(SMSTemplatePreview, self).default_get(fields)
+        sms_template = self._context.get('default_sms_template_id') and self.env['sms.template'].browse(self._context['default_sms_template_id']) or False
+        if sms_template and not result.get('res_id'):
+            result['res_id'] = self.env[sms_template.model].search([], limit=1)
+        return result
+
+    sms_template_id = fields.Many2one('sms.template')
+
+    lang = fields.Selection(_selection_languages, string='Template Preview Language')
+    model_id = fields.Many2one('ir.model', related="sms_template_id.model_id")
+    res_id = fields.Integer(string='Record ID')
+    resource_ref = fields.Reference(string='Record reference', selection='_selection_target_model', compute='_compute_resource_ref', inverse='_inverse_resource_ref')
+
+    @api.depends('model_id', 'res_id')
+    def _compute_resource_ref(self):
+        for preview in self:
+            if preview.model_id:
+                preview.resource_ref = '%s,%s' % (preview.model_id.model, preview.res_id or 0)
+
+    def _inverse_resource_ref(self):
+        for preview in self:
+            if preview.resource_ref:
+                preview.res_id = preview.resource_ref.id
+
+    @api.onchange('lang', 'resource_ref')
+    def on_change_resource_ref(self):
+        # Update res_id and body depending of the resource_ref
+        if self.resource_ref:
+            self.res_id = self.resource_ref.id
+        template = self.sms_template_id.with_context(lang=self.lang)
+        self.body = template._render_template(template.body, template.model, self.res_id)

addons/sms/wizard/sms_template_preview_views.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <data>
+        <!-- SMS Template Preview -->
+        <record model="ir.ui.view" id="sms_template_preview_form">
+            <field name="name">sms.template.preview.form</field>
+            <field name="model">sms.template.preview</field>
+            <field name="arch" type="xml">
+                <form string="SMS Preview">
+                    <h3>Preview of <field name="sms_template_id" readonly="1" nolabel="1" class="oe_inline"/></h3>
+                    <div class="o_row">
+                        <span>Choose an example <field name="model_id" readonly="1"/> record:</span>
+                        <div>
+                            <field name="resource_ref" class="oe_inline" options="{'hide_model': True, 'no_create': True, 'no_edit': True, 'no_open': True}"/>
+                            <span class="text-warning" attrs="{'invisible':[('resource_ref','!=', False)]}">No records</span>
+                        </div>
+                    </div>
+                    <p>Choose a language: <field name="lang" class="oe_inline ml8"/></p>
+                    <label for="body" string="SMS content"/>
+                    <hr/>
+                        <field name="body" readonly="1" nolabel="1" options='{"safe": True}'/>
+                    <hr/>
+                    <footer>
+                        <button string="Discard" class="btn-secondary" special="cancel"/>
+                    </footer>
+                </form>
+            </field>
+        </record>
+
+        <record id="sms_template_preview_action" model="ir.actions.act_window">
+            <field name="name">Template Preview</field>
+            <field name="res_model">sms.template.preview</field>
+            <field name="binding_model_id" ref="sms.model_sms_template"/>
+            <field name="type">ir.actions.act_window</field>
+            <field name="view_mode">form</field>
+            <field name="view_id" ref="sms_template_preview_form"/>
+            <field name="target">new</field>
+            <field name="context">{'default_sms_template_id':active_id}</field>
+        </record>
+
+    </data>
+</odoo>