Add filterFunction property

Author: autoantwort

README.md

@@ -67,4 +67,5 @@ And arrays of objects
 | showDefaultOption | sets the select title is set as an option | Boolean | false | |
 | textProp | the option's prop that is displayed as the option's text | String | text | |
 | valueProp | the option's prop that is used to find the selected value | String | value |
+| filterFunction | a function that can be used to do own filtering | Function (options, searchValue) => filteredOptions | lowercase string comparison |
 

src/vue-bootstrap-select.vue

@@ -92,6 +92,10 @@ export default {
     valueProp: {
       type: String,
       default: "value"
+    },
+    filterFunction: {
+      type: Function,
+      default: null
     }
   },
   data() {
@@ -110,6 +114,9 @@ export default {
     },
     filteredOptions() {
       if (this.searchable && this.searchValue.length > 0) {
+        if (this.filterFunction) {
+          return this.filterFunction(this.options, this.searchValue);
+        }
         return this.options.filter(item => {
           if (typeof item === "object") {
             return (