[IMP] website_sale_slides: support payment channels in new channel homepage

Purpose of this commit is to effectively support payment channels in the
new channel homepage. Specifications

 * display a 'Buy Course' button on payment based channels;
 * redirect to eCommerce;
 * display price;

We used everything available from eCommerce and product configurator to
find a real price to display. I must say I am quite happy with it.

This commit is linked to task ID 1936153 and PR #30770.

Co-Authored-By: Aurélien Warnon <awa@odoo.com>
Co-Authored-By: Thibault Delavallee <tde@odoo.com>

addons/website_sale_slides/__init__.py

@@ -1,4 +1,5 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from . import controllers
 from . import models

addons/website_sale_slides/__manifest__.py

@@ -13,5 +13,6 @@
     'data': [
         'data/website_sale_slides_demo.xml',
         'views/slide_channel_views.xml',
+        'views/website_slides_templates.xml',
     ]
 }

addons/website_sale_slides/controllers/__init__.py

@@ -0,0 +1,4 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import slides

addons/website_sale_slides/controllers/slides.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo import http, _
+from odoo.exceptions import AccessError, UserError
+from odoo.http import request
+from odoo.osv import expression
+
+from odoo.addons.website_slides.controllers.main import WebsiteSlides
+
+
+class WebsiteSaleSlides(WebsiteSlides):
+
+    def _prepare_additional_channel_values(self, values, **kwargs):
+        values = super(WebsiteSaleSlides, self)._prepare_additional_channel_values(values, **kwargs)
+        channel = values['channel']
+        if channel.visibility == 'payment' and channel.product_id:
+            pricelist = request.website.get_current_pricelist()
+            values['product_info'] = channel.product_id.product_tmpl_id._get_combination_info(product_id=channel.product_id.id, pricelist=pricelist)
+            values['product_info']['currency_id'] = request.website.currency_id
+        return values

addons/website_sale_slides/views/website_slides_templates.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" ?>
+<odoo><data>
+
+<template id='course_main' inherit_id="website_slides.course_main">
+    <!-- Channel main template: override button to join channel -->
+    <xpath expr="//div[hasclass('o_wslides_join_channel')]" position="inside">
+        <t t-if="not channel.is_member and channel.visibility == 'payment'">
+            <t t-if="channel.product_id.website_published">
+                <h4>
+                    <!-- original discounted price, if any -->
+                    <span t-att-class="'text-danger oe_default_price %s' % ('' if product_info['has_discounted_price'] else 'd-none')"
+                        style="text-decoration: line-through; white-space: nowrap;"
+                        t-esc="product_info['list_price']"
+                        t-options="{'widget': 'monetary', 'display_currency': product_info['currency_id']}"/>
+                        <!-- real price -->
+                    <b class="oe_price" style="white-space: nowrap;"
+                        t-esc="product_info['price']"
+                        t-options="{'widget': 'monetary', 'display_currency': product_info['currency_id']}"/>
+                    <span itemprop="price" style="display:none;" t-esc="product_info['price']"/>
+                    <span itemprop="priceCurrency" style="display:none;" t-esc="product_info['currency_id'].name"/>
+                </h4>
+                <a role="button" class="col-10 btn btn-primary" t-att-href="channel.product_id.website_url">
+                    <span class="cta-title text_small_caps">Buy Course</span>
+                </a>
+            </t>
+            <t t-else="">
+                <a role="button" class="col-10 btn btn-light" href="#">
+                    <span class="cta-title text_small_caps">Course Not Buyable</span>
+                </a>
+            </t>
+        </t>
+    </xpath>
+</template>
+
+</data></odoo>