[IMP] web: add a percentage formatter

This rev. adds a new formatter for numerical values to fieldsUtils.

addons/web/static/src/js/fields/field_utils.js

@@ -29,12 +29,12 @@ var _t = core._t;
 
 /**
  * Convert binary to bin_size
- * 
+ *
  * @param {string} [value] base64 representation of the binary (might be already a bin_size!)
  * @param {Object} [field]
- *        a description of the field (note: this parameter is ignored) 
+ *        a description of the field (note: this parameter is ignored)
  * @param {Object} [options] additional options (note: this parameter is ignored)
- * 
+ *
  * @returns {string} bin_size (which is human-readable)
  */
 function formatBinary(value, field, options) {
@@ -320,7 +320,19 @@ function formatMonetary(value, field, options) {
         return currency.symbol + ' ' + formatted_value;
     }
 }
-
+/**
+ * Returns a string representing the given value (multiplied by 100)
+ * concatenated with '%'.
+ *
+ * @param {number | false} value
+ * @param {Object} [field]
+ * @param {Object} [options]
+ * @returns {string}
+ */
+function formatPercentage(value, field, options) {
+    value = formatFloat(value * 100, field, options) || '0';
+    return parseFloat(value) + "%";
+}
 /**
  * Returns a string representing the value of the selection.
  *
@@ -591,6 +603,7 @@ return {
         many2one: formatMany2one,
         monetary: formatMonetary,
         one2many: formatX2Many,
+        percentage: formatPercentage,
         reference: formatMany2one,
         selection: formatSelection,
         text: formatChar,

addons/web/static/tests/fields/field_utils_tests.js

@@ -4,7 +4,6 @@ odoo.define('web.field_utils_tests', function (require) {
 var core = require('web.core');
 var session = require('web.session');
 var fieldUtils = require('web.field_utils');
-var testUtils = require('web.test_utils');
 
 QUnit.module('fields', {}, function () {
 
@@ -133,7 +132,22 @@ QUnit.test('format binary', function (assert) {
     // base64 estimated size (bytes) = value.length / 1.37 (http://en.wikipedia.org/wiki/Base64#MIME)
     // Here: 4 / 1.37 = 2.91970800 => 2.92 (rounded 2 decimals by utils.human_size)
     assert.strictEqual(fieldUtils.format.binary('Cg=='), '2.92 Bytes');
+});
 
+QUnit.test('format percentage', function (assert) {
+    assert.expect(8);
+
+    assert.strictEqual(fieldUtils.format.percentage(0), '0%');
+    assert.strictEqual(fieldUtils.format.percentage(0.5), '50%');
+    assert.strictEqual(fieldUtils.format.percentage(1), '100%');
+
+    assert.strictEqual(fieldUtils.format.percentage(-0.2), '-20%');
+    assert.strictEqual(fieldUtils.format.percentage(2.5), '250%');
+
+    assert.strictEqual(fieldUtils.format.percentage(0.125), '12.5%');
+    assert.strictEqual(fieldUtils.format.percentage(0.666666), '66.67%');
+
+    assert.strictEqual(fieldUtils.format.percentage(false), '0%');
 });
 
 QUnit.test('parse float', function(assert) {