Added filter parameter of customSearch option (#4533)

site/docs/api/table-options.md

@@ -963,6 +963,7 @@ The table options are defined in `jQuery.fn.bootstrapTable.defaults`.
 
   * `data`: the table data.
   * `text`: the search text.
+  * `filter`: the filter object from `filterBy` method (from 1.15.4).
 
   Example usage:
 

src/bootstrap-table.js

@@ -720,7 +720,7 @@ class BootstrapTable {
     if (this.options.sidePagination !== 'server') {
       if (this.options.customSearch) {
         this.data = Utils.calculateObjectValue(this.options, this.options.customSearch,
-          [this.options.data, this.searchText])
+          [this.options.data, this.searchText, this.filterColumns])
         return
       }