[ADD] salesperson_in_pos: adding salesperson button in POS

- inherit the pos.order model to use the app point_of_sale in form and list view
  of orders.
- Also add salesperson button in pos dashboard

Author: prbo-odoo

salesperson_in_pos/__init__.py

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+from . import models

salesperson_in_pos/__manifest__.py

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+{
+    'name': "Salesperson_Pos",
+    'version': "1.0",
+    'summary': "Add salesperson field in POS app",
+    'description': """
+        This module will add a button in the POS dashboard to assign a salesperson to respective orders.
+    """,
+    'author': "priyansi borda",
+    'depends': ['base', 'point_of_sale', 'hr'],
+    'data': [
+        "views/pos_view.xml",
+    ],
+    'assets': {
+    'point_of_sale._assets_pos': [
+        'salesperson_in_pos/static/src/**/*',
+    ],
+},
+    'application': False,
+    'installable': True,
+    'license': 'LGPL-3',
+}

salesperson_in_pos/models/__init__.py

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+from . import pos_order
+from . import pos_session

salesperson_in_pos/models/pos_order.py

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+from odoo import models, fields
+
+
+class PosOrder(models.Model):
+    _inherit = "pos.order"
+    salesperson_id = fields.Many2one('hr.employee', string='Salesperson', help='Salesperson who created the order')

salesperson_in_pos/models/pos_session.py

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+from odoo import models
+
+
+class PosSession(models.Model):
+    _inherit = 'pos.session'
+
+    def _load_pos_data_models(self, config_id):
+        data = super()._load_pos_data_models(config_id)
+        data.append("hr.employee")
+        return data

salesperson_in_pos/static/src/control_button/control_button.js

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+import { patch } from "@web/core/utils/patch";
+import { ControlButtons } from "@point_of_sale/app/screens/product_screen/control_buttons/control_buttons";
+import { SelectSalespersonButton } from "@salesperson_in_pos/salesperson_button/salesperson_button";
+
+patch(ControlButtons, {
+    components: {
+        ...ControlButtons.components,
+        SelectSalespersonButton,
+    },
+});

salesperson_in_pos/static/src/control_button/control_button.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<templates id="template" xml:space="preserve">
+    <t t-name="pos_salesperson_assignment.ControlButtons" t-inherit="point_of_sale.ControlButtons" t-inherit-mode="extension">
+        <xpath expr="//button[@t-if='!props.showRemainingButtons and !ui.isSmall and props.onClickMore']" position="before">
+            <SelectSalespersonButton/>
+        </xpath>
+    </t>
+</templates>

salesperson_in_pos/static/src/models/pos_order.js

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+import { patch } from "@web/core/utils/patch";
+import { PosOrder } from "@point_of_sale/app/models/pos_order";
+
+patch(PosOrder.prototype, {
+    setSalesperson(sales_person) {
+        this.update({ salesperson: sales_person });
+    },
+    getSalesperson(){
+        return this.salesperson;
+    },
+});

salesperson_in_pos/static/src/salesperson_button/salesperson_button.js

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+import { Component } from "@odoo/owl";
+import { usePos } from "@point_of_sale/app/store/pos_hook";
+import { useService } from "@web/core/utils/hooks";
+import { _t } from "@web/core/l10n/translation";
+import { makeAwaitable } from "@point_of_sale/app/store/make_awaitable_dialog";
+import { SelectionPopup } from "@point_of_sale/app/utils/input_popups/selection_popup";
+
+export class SelectSalespersonButton extends Component {
+    static template = "point_of_sale.SelectSalespersonButton";
+    static props = ["salesperson?"]
+    setup() {
+        this.pos = usePos();
+        this.dialog = useService("dialog");
+        const currentOrder = this.pos.get_order();
+        if (currentOrder) {
+            const currentSalesperson = currentOrder.getSalesperson();
+            if (currentSalesperson) {
+                this.props.salesperson = currentSalesperson;
+            }
+            else{
+                return;
+            }
+        }
+    }
+    async selectSalesperson(){
+        const currentOrder = this.pos.get_order();
+        if (!currentOrder) {
+            return false;
+        }
+        const salesperson_list = this.pos.models['hr.employee'].map((sp) => {
+            return {
+                id: sp.id,
+                item: sp,
+                label: sp.name,
+                isSelected: currentOrder.getSalesperson()?.id === sp.id || false 
+            }
+        });
+        console.log(this.pos.models['hr.employee'].getAll());
+        const selectedSalesperson = await makeAwaitable(this.dialog, SelectionPopup, {
+            title: _t("Select salesperson"),
+            list: salesperson_list,
+        });
+
+        if (selectedSalesperson) {
+            if (currentOrder.getSalesperson()?.id === selectedSalesperson.id) {
+                this.props.salesperson = null;
+                currentOrder.setSalesperson("");
+            }
+            else {
+                this.props.salesperson = selectedSalesperson;
+                currentOrder.setSalesperson(selectedSalesperson);
+            }
+        }
+        else{
+            return;
+        }
+    }
+}

salesperson_in_pos/static/src/salesperson_button/salesperson_button.xml

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+<templates id="temnplate" xml:space="preserve">
+    <t t-name="point_of_sale.SelectSalespersonButton">
+        <button class="btn btn-light btn-lg lh-lg text-truncate w-auto" t-on-click="() => this.selectSalesperson()">
+            <div t-if="props.salesperson" t-esc="props.salesperson.name" class="text-truncate text-action"></div>
+            <div t-else="">
+                Salesperson
+            </div>
+        </button>
+    </t>
+</templates>