[FIX] web_export_view: Remove newlines from fields having many2many_tags

web_export_view/static/src/js/web_export_view.js

@@ -88,7 +88,14 @@ odoo.define('web_export_view', function (require) {
                                         ? _t("True") : _t("False")
                                 );
                             } else {
-                                var text = $cell.text().trim();
+                                var is_m2m = $cell.hasClass('o_many2many_tags_cell');
+                                if (is_m2m) {
+                                    var tags = $cell.find('span.o_badge_text');
+                                    var tags_text_list = tags.map((i, el) => el.innerText.trim()).get();
+                                    var text = tags_text_list.join('\n');
+                                } else {
+                                    var text = $cell.text().trim();
+                                }
                                 var is_number =
                                     $cell.hasClass('o_list_number') &&
                                     !$cell.hasClass('o_float_time_cell');

web_export_view/static/tests/web_export_view_tests.js

@@ -0,0 +1,121 @@
+odoo.define('web_export_view.data_export_tests', function (require) {
+"use strict";
+
+var ListView = require('web.ListView');
+var testUtils = require('web.test_utils');
+
+var createView = testUtils.createView;
+
+QUnit.module('web_export_view', {
+    beforeEach: function () {
+        this.data = {
+            user: {
+                fields: {
+                    name: {
+                        string: "Name",
+                        type: "char",
+                        },
+                    company_ids: {
+                        string: "Companies",
+                        type: "one2many",
+                        relation: "company",
+                        },
+                },
+                records: [
+                    {
+                        id: 1,
+                        name: "User in all companies",
+                        company_ids: [1, 2],
+                    },
+                    {
+                        id: 2,
+                        name: "User in company 1",
+                        company_ids: [1],
+                    },
+                    {
+                        id: 3,
+                        name: "User in company 2",
+                        company_ids: [2],
+                    },
+                    {
+                        id: 4,
+                        name: "User in no company",
+                        company_ids: [],
+                    },
+                ]
+            },
+            company: {
+                fields: {
+                    name: {
+                        string: "Name",
+                        type: "char",
+                        },
+                },
+                records: [
+                    {
+                        id: 1,
+                        name: "Company 1",
+                        display_name: "Display company 1",
+                    },
+                    {
+                        id: 2,
+                        name: "Company 2",
+                        display_name: "Display company 2",
+                    },
+                ]
+            },
+        };
+    }
+}, function () {
+
+    QUnit.test('Exporting many2many_tags widget', function (assert) {
+        var data_companies = this.data.company.records;
+        assert.expect(1 + data_companies.length);
+
+        var list = createView({
+            View: ListView,
+            model: 'user',
+            data: this.data,
+            arch:
+                '<tree>' +
+                    '<field name="name"/>' +
+                    '<field name="company_ids" widget="many2many_tags"/>' +
+                '</tree>',
+            viewOptions: {
+                hasSidebar: true,
+                },
+            session: {
+                get_file: function (params) {
+                    // Find line for user in all companies
+                    var rows = JSON.parse(params.data.data).rows;
+                    var file_companies_text = rows.find(r => r[0] === "User in all companies")[1];
+                    var file_companies = file_companies_text.split('\n');
+
+                    // Check that there is exactly one line per company
+                    assert.equal(
+                        file_companies.length,
+                        data_companies.length,
+                        "Companies field in file has as many lines as defined companies"
+                        );
+                    for (let data_company of data_companies) {
+                        assert.ok(
+                            file_companies.includes(data_company.display_name),
+                            "Company " + data_company.id + " is exported"
+                            );
+                    }
+
+                    params.complete();
+                },
+            },
+        });
+
+        // Select all lines and export
+        list.$('thead th.o_list_record_selector input').click();
+        list.sidebar.$("button.export_treeview_xls").click();
+
+        // Cleanup
+        list.destroy();
+    });
+});
+
+});

web_export_view/views/web_export_view_view.xml

@@ -6,4 +6,9 @@
             <script type="text/javascript" src="/web_export_view/static/src/js/web_export_view.js"></script>
         </xpath>
     </template>
+    <template id="qunit_suite" name="web_export_view tests" inherit_id="web.qunit_suite">
+        <xpath expr="//t[@t-set='head']" position="inside">
+            <script type="text/javascript" src="/web_export_view/static/tests/web_export_view_tests.js"/>
+        </xpath>
+    </template>
 </odoo>