pass _charset parameter by name, because the second positional argument is _subtype

Don't encode text/plain in base64, so that MUA can display it inline


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15893 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/Url.py

@@ -145,16 +145,16 @@ class Url(Coordinate, Base, UrlMixIn):
            subject=None,  attachment_list=None):
     """
     This method was previously named 'SendMail' and is used to send email
-    attachment_list is a list of dictionnary wich has keys :
+
+    * attachment_list is a list of dictionnaries with those keys:
      - name : name of the attachment,
      - content: data of the attachment
      - mime_type: mime-type corresponding to the attachment
     """
     # get the mailhost object
-    try:
-      mailhost=self.getPortalObject().MailHost
-    except:
-      raise AttributeError, "Cannot find a Mail Host object"
+    mailhost = getattr(self.getPortalObject(), 'MailHost', None)
+    if mailhost is None:
+      raise AttributeError, "Cannot find a MailHost object"
     else:
       if from_url is None:
         from_url = self.getUrlString(None)
@@ -194,13 +194,13 @@ class Url(Coordinate, Base, UrlMixIn):
 
         # attach it
         if attachment['mime_type'] == 'text/plain':
-          part = MIMEText(attachment['content'], 'utf-8')
+          part = MIMEText(attachment['content'], _charset='utf-8')
         else:
           #  encode non-plaintext attachment in base64
           part = MIMEBase(*attachment['mime_type'].split('/', 1))
           part.set_payload(attachment['content'])
-
           Encoders.encode_base64(part)
+
         part.add_header('Content-Disposition', 
                         'attachment; filename=%s' % attachment_name)
         message.attach(part)