Odoo 11 Qweb Report empty page - python-3.x

Question

I am trying to create a qweb report for Odoo 11 but without any success. 0 byte pdf I am getting, I edit the report to qweb-html and then only white page. Please help me to solve the issue. Below is my code. I am a beginner and trying to create this report after reading different posts and different modules.
Below is my code in 4 seprate files.
1st file
from odoo import models, fields, api
class TrueReportFields(models.TransientModel):
_name = 'true.report'
#api.multi
def print_true_report(self):
sales = self.env['sale.order'].sudo().search(
[('state', 'in', ('sale', 'done'))])
total_sale = total_cost = 0
for sale in sales:
total_sale += sale.amount_total
for lines in sale.order_line:
total_cost += lines.product_id.standard_price * lines.product_uom_qty
purchases = self.env['purchase.order'].sudo().search(
[('state', 'not in', ('draft', 'canceled'))])
total_purchase = 0
for purchase in purchases:
total_purchase += purchase.amount_total
pos_sales = self.env['pos.order'].sudo().search(
[('state', 'not in', ['cancel', 'draft'])])
total_pos_sale = total_pos_cost = 0
for pos in pos_sales:
total_pos_sale += pos.amount_total
for posl in pos.lines:
total_pos_cost += posl.product_id.standard_price * posl.qty
datas = {
'ids': self,
'model': 'true.report',
'total_sale': total_sale,
'total_cost': total_cost,
'total_purchase': total_purchase,
'total_pos_sale': total_pos_sale,
'total_pos_cost': total_pos_cost
}
return self.env.ref('true_report.action_true_report').report_action(self, data=datas)
2nd file
from odoo import api, models
class TrueReport(models.AbstractModel):
_name = 'report.true_report.report_details'
#api.model
def get_report_values(self, docids, data=None):
return {
'doc_ids': data.get('ids'),
'doc_model': data.get('model'),
'total_sale': data['total_sale'],
'total_cost': data['total_cost'],
'total_purchase': data['total_purchase'],
'total_pos_sale': data['total_pos_sale'],
'total_pos_cost': data['total_pos_cost']
}
xml views
<odoo>
<data>
<record id="view_true_report" model="ir.ui.view">
<field name="name">product.detail.form</field>
<field name="model">true.report</field>
<field name="arch" type="xml">
<form string="True Details">
<!--<group>
<group>
<field name="start_date"/>
</group>
<group>
<field name="end_date"/>
</group>
</group>-->
<footer>
<button string='Print' name="print_true_report" type="object" default_focus="1"
class="oe_highlight"/>
<button string="Cancel" class="btn-default" special="cancel"/>
</footer>
</form>
</field>
</record>
<record id="open_true_report_action" model="ir.actions.act_window">
<field name="name">Top Sold Products</field>
<field name="res_model">true.report</field>
<field name="view_type">form</field>
<field name="view_mode">form</field>
<field name="target">new</field>
<field name="view_id" ref="view_true_report"/>
</record>
<menuitem
id="menu_true_report"
name="True Report"
parent="sale.menu_sale_report"
sequence="4"
action="true_report.open_true_report_action"/>
<report
id="action_true_report"
string="True PDF Report"
model="true.report"
report_type="qweb-pdf"
file="true_report.report_details"
name="true_report.report_details"
/>
</data>
</odoo>
xml templates
<?xml version="1.0" encoding="utf-8"?>
<odoo>
<template id="report_details_documents">
<t t-call="web.html_container">
<t t-set="o" t-value="doc.with_context({'lang':doc.partner_id.lang})" />
<!--<t t-foreach="docs" t-as="o">-->
<!--<t t-foreach="docs" t-as="o">-->
<t t-call="web.external_layout">
<div class="page">
<div class="row">
<div class="oe_structure"/>
<div style="text-align: center;">
<span style="font-size: 25px;">True Report Details</span>
</div>
<!--<div class="row mt32 mb32">
<div class="col-xs-4">
<p>
<t>
<strong>From Date :</strong>
<span t-esc="o.start_date"/>
<br/>
</t>
<t>
<strong>To Date :</strong>
<span t-esc="o.end_date"/>
</t>
</p>
</div>
</div>-->
<table class="table table-condensed">
<thead>
<tr>
<th>Total Sales</th>
<th class="text-right">Total Cost</th>
<th>Total Purchase</th>
<th>Pos Sale</th>
<th>Pos Cost</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<span t-esc="o.total_sale"/>
</td>
<!-- <td class="text-right" style="white-space: text-nowrap;">
<span t-esc="o.total_cost"/>
</td>
<td>
<span t-esc="o.total_purchase"/>
</td>
<td>
<span t-esc="o.total_pos_sale"/>
</td>
<td>
<span t-esc="o.total_pos_cost"/>
</td>-->
</tr>
</tbody>
</table>
</div>
</div>
</t>
<!--</t>-->
</t>
</template>
<template id="report_details">
<t t-call="web.html_container">
<t t-foreach="docs" t-as="o">
<t t-call="true_report.report_details_documents" t-lang="o.company_id.partner_id.lang"/>
</t>
</t>
</template>
</odoo>
Please help me to solve the issue. I will be a great help.
Thanks in advance.

Answer 1

you can try
<t t-call="web.external_layout"> instead of <t t-call="web.html_container">