fix upload multi files with the same filename

flask_excel/__init__.py

@@ -9,6 +9,7 @@
     :license: New BSD License
 """
 from flask import Flask, Request, Response
+import pyexcel as pe
 import pyexcel_webio as webio
 
 
@@ -17,10 +18,43 @@ class ExcelRequest(webio.ExcelInputInMultiDict, Request):
     Mix in pyexcel's webio function signatures to Flask request
     """
     def get_file_tuple(self, field_name):
-        filehandle = self.files[field_name]
-        filename = filehandle.filename
-        extension = filename.split(".")[1]
-        return extension, filehandle
+        # will upload multi files with the same filename
+        for filehandle in self.files.getlist(field_name):
+            filename = filehandle.filename
+            extension = filename.split(".")[1]
+            yield extension, filehandle
+
+    def get_array(self, **keywords):
+        """
+        Get a list of lists from the file
+
+        :param sheet_name: For an excel book, there could be multiple
+                           sheets. If it is left unspecified, the
+                           sheet at index 0 is loaded. For 'csv',
+                           'tsv' file, *sheet_name* should be None anyway.
+        :param keywords: additional key words
+        :returns: A list of lists
+        """
+        result = []
+        for params in self.get_params(**keywords):
+            result.extend(pe.get_array(**params))
+        return result
+
+    def get_params(self, field_name=None, **keywords):
+        """
+        Load the single sheet from named form field
+        """
+        for file_type, file_handle in self.get_file_tuple(field_name):
+            if file_type is not None and file_handle is not None:
+                file_content = file_handle.read()
+                file_content = file_content.decode("gbk").encode("utf-8")
+                keywords = {
+                    'file_type': file_type,
+                    'file_content': file_content
+                }
+                yield keywords
+            else:
+                raise Exception("Invalid parameters")
 
 
 # Plug-in the custom request to Flask