I have the following method on my model:

from openerp import models, fields, api, SUPERUSER_ID

class Loan(models.Model):
    _name = 'loan'

    @api.model
    def send_mail_function_model(self):
        template_id = self.env.ref('opencloud_cashflows.email_template_loan')
        if template_id:
           template_id.send_mail(self.id, force_send=True)
        return True

This is my email template:

<?xml version="1.0" ?>
<openerp>
<data noupdate="1">
    <!--Email template -->
    <record id="email_template_loan" model="mail.template">
        <field name="name">Loan - Send by Email</field>
        <field name="email_from">${(object.company_id.loan_email and '%s &lt;%s&gt;' % (object.company_id.name, object.company_id.loan_email) or '')|safe}</field>
        <field name="subject">${object.company_id.name} Invoice (Ref ${object.number or 'n/a'})</field>
        <!--<field name="partner_to">${object.partner_id.id}</field>-->
        <field name="model_id" ref="base.model_res_company"/>
        <field name="auto_delete" eval="True"/>
        <field name="lang">${object.env.user.lang}</field>
        <field name="body_html"><![CDATA[
        ]]></field>
    </record>
</data>
</openerp>

Now, since this method should an email from frontpage (a website page) I've made this javascript function:

odoo.define('opencloud_cashflows.loan_send', function (require) {
"use strict";
var ajax = require('web.ajax');
var core = require('web.core');
var session = require('web.session');
var base = require('web_editor.base');
var _t = core._t;
base.url_translations = '/website/translations';
var _t = core._t;
var Model = require('web.DataModel');
$(document).ready(function(){
    var model = new Model('loan');
    $('#send_mail_function_model').click(function(){

        model.call('send_mail_function_model',[])

    })
});
});

Then I call this from website page like this:

<script type="text/javascript" src="/opencloud_cashflows/static/src/js/email.js"/>

And in the button which should trigger the javascript:

<center><input id="loan_send" class="btn btn-primary btn-lg" name="loan_send" value="Pedir préstamo al Banco" type="submit" style="background-color:#e67e22;"/></center>

But it doesn't do anything, any ideas on what could be wrong here please?