Manage webservice from odoo - python-3.x

Question

I am new to Odoo 11, I have created a module called 'coupon', for this module I have created a security group and a default user that is added to this group:
<record id="default_coupon_user" model="res.users">
<field name="login">couponuser</field>
<field name="password">couponuser</field>
<field name="password_crypt">couponuser</field>
<field name="name">Default User Coupon</field>
<field name="display_name">Default Coupon User</field>
<field name="customer">False</field>
</record>
<record id="coupon_managers_group" model="res.groups" >
<field name="name">Coupon Managers Group</field>
<field name="comment">Coupon Managers Group that will be used in the Coupon microservice.</field>
<field name="category_id" ref="base.module_category_coupon"/>
<field name="users" eval="[(4, ref('coupon.default_coupon_user'))]"/>
</record>
My module depends on website because I need to create a website, for that site I created an index page:
<!-- === Coupon Page === -->
<template id="index_template">
<t t-call="website.layout">
<div id="wrap">
<div class="container">
<h1>Coupons</h1>
<a href="/payum_coupon/create" class="btn btn-primary btn-lg">
Add
</a>
<p>paginas:
<t t-esc="coupons['pg']"/>
</p>
<p>total:
<t t-esc="coupons['total']"/>
</p>
<ul class="clientes">
<t t-foreach="coupons['items']" t-as="i">
<li>
<a t-attf-href="/payum_coupon/{{i['email']}}">
<t t-esc="i['firstName']"/>
<t t-esc="i['lastName']"/>
-
<t t-esc="i['email']"/>
</a>
</li>
</t>
</ul>
</div>
</div>
</t>
</template>
<record id="coupon_page" model="website.page">
<field name="name">Index Coupon page</field>
<field name="website_published">True</field>
<field name="url">/coupon</field>
<field name="view_id" ref="index_template"/>
<field name="groups">coupon.coupon_managers_group</field>
</record>
and website.menu with the following code:
<record id="coupon_page_link" model="website.menu">
<field name="name">Coupon</field>
<field name="page_id" ref="coupon_page"/>
<field name="parent_id" ref="website.main_menu"/>
</record>
the python code in the controller that will be executed by said menu is this:
#http.route('/coupon', auth='user', website=True)
def index(self, **kw):
#<<my code here>>
I need several things:
when the 'index' page is displayed if the user in session is not in the 'coupon.coupon_managers_group' group then the menu is not shown
And that when the controller method '/coupon' is executed it is verified that the user in session is in the group 'coupon.coupon_managers_group'
This site has a particularity and that my module does not have models, since it is to manage the data of an api rest application, that is, in odoo I have to create the views of list, create, etc., but the data is written and they are read from a remote web service.
I have searched many sites on the internet but I have not found anything, as they always refer to local cases in odoo.

Answer 1

To hide the website menu based on the user group you could do something like this:
from odoo import api, models
class Menu(models.Model):
_inherit = "website.menu"
#api.one
def _compute_visible(self):
if self.clean_url() == '/coupon' and not self.env.user.has_group('coupon.coupon_managers_group'):
return False
return super(Menu, self)._compute_visible()
In the controller of the route /coupon you could check the user group like:
request.env.user.has_group('coupon.coupon_managers_group')