From d4469f9b92a460117bb4c24e5cc35da2258a79a9 Mon Sep 17 00:00:00 2001
From: Samuel Gaist <samuel.gaist@idiap.ch>
Date: Thu, 4 Oct 2018 15:19:29 +0200
Subject: [PATCH] [toolchains][admin] Fixed editing

---
 beat/web/toolchains/admin.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/beat/web/toolchains/admin.py b/beat/web/toolchains/admin.py
index 95822f754..037a699c8 100644
--- a/beat/web/toolchains/admin.py
+++ b/beat/web/toolchains/admin.py
@@ -100,7 +100,9 @@ class ToolchainModelForm(forms.ModelForm):
         # make sure we don't pass back a str field as 'file'
         if 'declaration_file' in self.data and \
                 isinstance(self.data['declaration_file'], six.string_types):
-            self.data['declaration_file'] = ContentFile(self.data['declaration_file'], name='unsaved')
+            mutable_data = self.data.copy()
+            mutable_data['declaration_file'] = ContentFile(self.data['declaration_file'], name='unsaved')
+            self.data = mutable_data
 
 
 #----------------------------------------------------------
-- 
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