add null.toJS() crash 的问题 review by daiqiang

@@ -120,12 +120,12 @@ export default class GuangDetailProductCell extends Component {
     render() {
         let {data, sourceType, similarIndex, rowID} = this.props;
         let name = data.get('product_name') ? data.get('product_name') : '';
-        let yh_exposureData = data.get('yh_exposureData', null).toJS();
-		let prd_id = data.get('product_id') ? data.get('product_id') : '';
-		let isGlobal = data.get('is_global') && data.get('is_global') == 'Y'; // 是否全球购商品
-		let is_limitbuy = data.get('is_limitbuy') && data.get('is_limitbuy') == 'Y'; // product.is_limitbuy=='Y'?true:false;
-		let product_skn = data.get('product_skn') ? data.get('product_skn') : '';
-
+        let yh_exposureData = data && data.get('yh_exposureData') ? data.get('yh_exposureData').toJS() : {};
+    		let prd_id = data.get('product_id') ? data.get('product_id') : '';
+    		let isGlobal = data.get('is_global') && data.get('is_global') == 'Y'; // 是否全球购商品
+    		let is_limitbuy = data.get('is_limitbuy') && data.get('is_limitbuy') == 'Y'; // product.is_limitbuy=='Y'?true:false;
+    		let product_skn = data.get('product_skn') ? data.get('product_skn') : '';
+    
         return (
             <TouchableOpacity
                 style={styles.container}

@@ -44,7 +44,7 @@ export default class RecommentProducts extends React.Component {
         let price = '¥' + salePrice.toFixed(2);
         let product_id = rowData.get('product_id')?rowData.get('product_id'):0;
         let rec_id = rowData.get('rec_id')?rowData.get('rec_id'):'';
-        let yh_exposureData = rowData.get('yh_exposureData', null).toJS();
+        let yh_exposureData = rowData && rowData.get('yh_exposureData') ? rowData.get('yh_exposureData').toJS() : {};
 
         return (
             <TouchableOpacity activeOpacity={0.5} yh_exposureData={yh_exposureData} onPress={() => {