From f4ac55ec79457772f3ad1b0f983b9c1c06947caf Mon Sep 17 00:00:00 2001
From: mertsincan <sincan.mert@gmail.com>
Date: Fri, 17 Apr 2020 12:26:56 +0300
Subject: [PATCH] Fixed #1336 - Add filterLocale property to MultiSelect

---
 src/components/multiselect/MultiSelect.d.ts | 1 +
 src/components/multiselect/MultiSelect.js   | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/components/multiselect/MultiSelect.d.ts b/src/components/multiselect/MultiSelect.d.ts
index 3c221d7810..f540eaf762 100755
--- a/src/components/multiselect/MultiSelect.d.ts
+++ b/src/components/multiselect/MultiSelect.d.ts
@@ -18,6 +18,7 @@ interface MultiSelectProps {
     filterBy?: string;
     filterMatchMode?: string;
     filterPlaceholder?: string;
+    filterLocale?: string;
     tabIndex?: boolean;
     dataKey?: string;
     inputId?: string;
diff --git a/src/components/multiselect/MultiSelect.js b/src/components/multiselect/MultiSelect.js
index 2f89e28419..bc25ca67da 100644
--- a/src/components/multiselect/MultiSelect.js
+++ b/src/components/multiselect/MultiSelect.js
@@ -28,6 +28,7 @@ export class MultiSelect extends Component {
         filterBy: null,
         filterMatchMode: 'contains',
         filterPlaceholder: null,
+        filterLocale: undefined,
         tabIndex: '0',
         dataKey: null,
         inputId: null,
@@ -62,6 +63,7 @@ export class MultiSelect extends Component {
         filterBy: PropTypes.string,
         filterMatchMode: PropTypes.string,
         filterPlaceholder: PropTypes.string,
+        filterLocale: PropTypes.string,
         tabIndex: PropTypes.string,
         dataKey: PropTypes.string,
         inputId: PropTypes.string,
@@ -373,9 +375,9 @@ export class MultiSelect extends Component {
     }
 
     filterOptions(options) {
-        let filterValue = this.state.filter.trim().toLowerCase();
+        let filterValue = this.state.filter.trim().toLocaleLowerCase(this.props.filterLocale);
         let searchFields = this.props.filterBy ? this.props.filterBy.split(',') : [this.props.optionLabel || 'label'];
-        return FilterUtils.filter(options, searchFields, filterValue, this.props.filterMatchMode);
+        return FilterUtils.filter(options, searchFields, filterValue, this.props.filterMatchMode, this.props.filterLocale);
     }
 
     getOptionLabel(option) {