How to override the models in models.js in pos odoo13

Question

How to add a domain to the following model and load it at the point of sale startup.

{
    model:  'res.partner',
    label: 'load_partners',
    fields: ['name','street','city','state_id','country_id','vat',
             'phone','zip','mobile','email','barcode','write_date',
             'property_account_position_id','property_product_pricelist'],
    loaded: function(self,partners){
        self.partners = partners;
        self.db.add_partners(partners);
    },
}

Answer 1

Use load_models function of point_of_sale.models to load res.partner model, (You can find many models using domain in the original models file):

odoo.define('my_module.partners', function (require) {
"use strict";

    var models = require('point_of_sale.models');

    models.load_models([{
        model:  'res.partner',
        fields: ['name','street','city','state_id','country_id','vat', 'phone','zip','mobile','email','barcode','write_date', 'property_account_position_id','property_product_pricelist'],
        domain: function(self){ return [['company_id', '=', self.config.company_id[0]]]; },
        loaded: function(self, partner) {}
    }]);
});

domain: [domain|function] the domain that determines what models need to be loaded. Null loads everything.

Edit:

You can access models using models.PosModel.prototype.models, you will also need to override prepare_new_partners_domain method.

Try the following example:

var _super_pos_model = models.PosModel.prototype;
var _models = models.PosModel.prototype.models;

var _domain = [['id', '<=', 3]];
// partner model is the fifth element in models (index==4)
_models[4]['domain']  = function(self){ return _domain; };

models.PosModel = models.PosModel.extend({
     prepare_new_partners_domain: function(){
        var domain = _super_pos_model.prepare_new_partners_domain.apply(this, arguments);
        domain.push(..._domain);
        console.log("domain", domain);
        return domain;
    },
});

console.log("models", models.PosModel.prototype.models);