Hello there,

I have tried several options to get it done.. But failed each time on the js function.

_inherit  =  'pos.order'
qr  =  fields.Char(string="QR")

Later i wanted to fetch this fields and return from the receipt dictionary so that i can print this on pos receipt, like receipt.qr

For the js function i wrote like this,

var b = this.get_name()
var domain = [['pos_reference', '=', b]];
var model = 'pos.order';
// Use an empty array to read all the fields of the records
var fields = [];
var qr = '';

var df = function () {
    rpc.query({
        model: model,
        method: 'search_read',
        args: [domain, fields],
    }).then(function (data) {
        receipt.qr  =  data[0].qr
    });
};

This, add the 'qr' key and the value in the receipt dicctionary, but i cant find it on the templates by receipt.qr. May be because of the Promise function and await issue.

The receipt dictionary is this,

var receipt = {
        orderlines: orderlines,
        paymentlines: paymentlines,
        subtotal: this.get_subtotal(),
        total_with_tax: this.get_total_with_tax(),
        total_rounded: this.get_total_with_tax() + this.get_rounding_applied(),
        total_without_tax: this.get_total_without_tax(),
        total_tax: this.get_total_tax(),
        total_paid: this.get_total_paid(),
        total_discount: this.get_total_discount(),
        rounding_applied: this.get_rounding_applied(),
        tax_details: this.get_tax_details(),
        change: this.locked ? this.amount_return : this.get_change(),
        name: this.get_name(),
        client: client ? client : null,
        invoice_id: null,   //TODO
        cashier: cashier ? cashier.name : null,
        precision: {
            price: 2,
            money: 2,
            quantity: 3,
        },
        date: {
            year: date.getFullYear(),
            month: date.getMonth(),
            date: date.getDate(),       // day of the month
            day: date.getDay(),         // day of the week
            hour: date.getHours(),
            minute: date.getMinutes(),
            isostring: date.toISOString(),
            localestring: this.formatted_validation_date,
        },
        company: {
            email: company.email,
            website: company.website,
            company_registry: company.company_registry,
            contact_address: company.partner_id[1],
            vat: company.vat,
            vat_label: company.country && company.country.vat_label || _t('Tax ID'),
            name: company.name,
            phone: company.phone,
            logo: this.pos.company_logo_base64,
        },
        currency: this.pos.currency,
    };


    if (is_html(this.pos.config.receipt_header)) {
        receipt.header = '';
        receipt.header_html = render_html(this.pos.config.receipt_header);
    } else {
        receipt.header = this.pos.config.receipt_header || '';
    }

    if (is_html(this.pos.config.receipt_footer)) {
        receipt.footer = '';
        receipt.footer_html = render_html(this.pos.config.receipt_footer);
    } else {
        receipt.footer = this.pos.config.receipt_footer || '';
    }
    return receipt;
},

Here, i want to add a new key names 'qr' and the value will be the return from the rpc.query that i have the domain for current order name and based on that i want to take the 'qr' of this order. 

PLease if anybody can guide or help, then it will be very helpful for me. Thanks