Hi,
I wish to re-open the same topic from here
<https://groups.google.com/d/msg/trac-users/x3_djxbf6SE/O_206kVvHQAJ>. I am
ready to share my code here as well.
Client side code below
$.savePermissions = function(user_roles,new_roles) {
params = { 'change' : true, 'user_roles' : user_roles,
'new_roles':new_roles };
var href = window.location.pathname;
$(".ui-wait").show();
$.ajax({
type: "POST",
url: href,
data: params,
dataType: "json",
success: function (data) {
console.log(data);
if ( data.errors.length ) {
$.addWarnings(data.errors);
}
else if ( data.notices.length ) {
$.addNotices(data.notices);
}
$(".ui-wait").hide();
},
error: function (jqXHR, exception,errorThrown) {
console.log(errorThrown);
$.addWarnings(["Error in updating permissions"]);
$(".ui-wait").hide();
}
});
};
That ajax call is failing sometimes. But the RuntimeError occurs even if
the ajax call is success. I found the error is logged in log file.
Server side code below
if req.args.get('change'):
try:
accounts = [token.split('|')
for token in get_list_on_scalar(req.
args.get('user_roles'))
if token]
for username, role in accounts:
userrole = req.args.get("new_roles").split(',');
if not userrole:
add_warning(req, "There was some problem in
getting role preference for user - %s, failed to proceed." % username)
errors.append("There was some problem in
getting role preference for user - %s, failed to proceed." % username)
else:
# account_manager.modify_role(req, username,
userrole)
# add_notice(req, "The user roles are updated")
# notices.append("The user - %s role %s have
been updated"% (username, ','.join(userrole)))
notices.append("Role of user - '%s' is updated
as '%s'"% (username, ','.join(userrole)))
data['notices'] = notices
data['errors'] = errors
message = "The user - %s role %s have been
updated" % (username, userrole)
EventLogManagement(self.env).log_event(req.
authname, self.env.project_name, Modules.ADMIN, message, req.remote_addr,
Keys.INFO)
self.respond(req, data)
except:
(self.log.debug(traceback.format_exception(*sys.exc_info
())))
self.respond(req, data)
That respond method goes like this,
def respond(self, req, data, code=200):
"""Respond to the JSON request by sending the JSON-encoded data
back."""
json_data = json.dumps(data)
self.env.log.debug("JS_on")
self.env.log.debug(json_data)
req.send_response(code)
req.send_header('Content-Type', 'application/json')
req.send_header('Content-Length', len(json_data))
req.write(json_data)
raise RequestDone
Basically what I am doing here is, getting some data from the user and
storing it to database. Returning a json response back to browser. The
problem is, save operations is not properly done. after the ajax is over,
my understanding is the save action is done. So I refreshed the page but my
page showed me the previous state of the page. I am confused here!
It would be better if I can get a clear sample of how one should make
the ajax call properly in trac.
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