a workaround for fixing the _ module missing

packages/react-bootstrap-table2-toolkit/context.js

@@ -40,18 +40,33 @@ class ToolkitProvider extends statelessDrcorator(React.Component) {
     this.state = {
       searchText: ''
     };
+    this._ = null;
     this.onSearch = this.onSearch.bind(this);
+    this.setDependencyModules = this.setDependencyModules.bind(this);
   }
 
   onSearch(searchText) {
     this.setState({ searchText });
   }
 
+  /**
+   * 
+   * @param {*} _ 
+   * this function will be called only one time when table render
+   * react-bootstrap-table-next/src/context/index.js will call this cb for passing the _ module
+   * Please consider to extract a common module to handle _ module.
+   * this is just a quick fix
+   */
+  setDependencyModules(_) {
+    this._ = _;
+  }
+
   render() {
     const baseProps = {
       keyField: this.props.keyField,
       columns: this.props.columns,
-      data: this.props.data
+      data: this.props.data,
+      setDependencyModules: this.setDependencyModules
     };
     if (this.props.search) {
       baseProps.search = {

packages/react-bootstrap-table2-toolkit/src/csv/exporter.js

@@ -19,6 +19,7 @@ export const getMetaInfo = columns =>
 export const transform = (
   data,
   meta,
+  getValue,
   {
     separator,
     ignoreHeader
@@ -36,7 +37,7 @@ export const transform = (
   content += data
     .map((row, rowIndex) =>
       visibleColumns.map((m) => {
-        let cellContent = row[m.field];
+        let cellContent = getValue(row, m.field);
         if (m.formatter) {
           cellContent = m.formatter(cellContent, row, rowIndex, m.formatExtraData);
         }

packages/react-bootstrap-table2-toolkit/src/op/csv.js

@@ -18,7 +18,7 @@ export default Base =>
           ...csvDefaultOptions,
           ...exportCSV
         };
-      const content = transform(data, meta, options);
+      const content = transform(data, meta, this._.get, options);
       save(content, options);
     }
   };

packages/react-bootstrap-table2/src/bootstrap-table.js

@@ -179,7 +179,8 @@ BootstrapTable.propTypes = {
   search: PropTypes.shape({
     searchText: PropTypes.string,
     searchContext: PropTypes.func
-  })
+  }),
+  setDependencyModules: PropTypes.func
 };
 
 BootstrapTable.defaultProps = {

packages/react-bootstrap-table2/src/contexts/index.js

@@ -47,6 +47,10 @@ const withContext = Base =>
         this.SearchContext = props.search.searchContext(
           _, this.isRemoteSearch, this.handleRemoteSearchChange);
       }
+
+      if (props.setDependencyModules) {
+        props.setDependencyModules(_);
+      }
     }
 
     renderBase() {