Inspection of the postgres slow queries log showed that the "narrow to
personals with a particular user" database queries were taking a long
time to run (0.5s+). Further investigation determined that the OR
gate construction used here was causing the entire zephyr_message
table to be scanned; primarily I think because we were using the
implicit constraint that the logged in user had received messages.
This change makes that query explicit (improving performance), while
cleaning up the code to avoid an unnecessary query and read a little
more clearly.
After this change, the relevant database query takes 10s of milliseconds.
(imported from commit 020f5af5846c958386615e37ea9318383bf99ca0)
Alternatively the server could return a successful result with an empty list of
messages. But I prefer the solution in this commit, because it would allow us
in the future to warn the user about the problem. It does allow users to
determine if a given stream exists, but we haven't tried to hide that
information so far.
(imported from commit a91e12c90b12d3c870c0b637c3f1d6d3cef88491)
It's cleaner if the filtering code recognizes only one value.
We can add this back in by converting in the parser.
(imported from commit 453b7b01e094955c6d66be63b5d997cc56b50a35)
Show the buttons iff
- the search input is focused,
- the search input has non-empty contents, or
- we are narrowed.
(imported from commit f5c98471a2db4ab522160960dd1271471a9db555)
We don't require that the parsed form be lower case; that's handled by
narrow.activate. However we unparse as lower case, in order to give the user a
hint that matching is not case sensitive.
(imported from commit 2882b440deb59a049b095db7a13cfc18e047caec)
Also removed .show()s for the alert on does-not-exist and not-subscribed, where
a blank error would display. This should fix the underlying issue with #166:
that hiding the composebox before send_message() was called would hide server
errors.
(imported from commit a8a50cdf82ddf1d15f1e405432ff3bbfdb7a491a)
Add maxlength attribute to the textarea which displays a tool tip (in Chrome)
for the user, telling them they are over the limit, so that the error is caught
before the send_message step (which is too late for Create and Send).
Fixes trac ticket #166.
(imported from commit 36b211a17f42dc8345e2235b4b4ca74c8f4e86c4)
This is needed to avoid exceptions trying to do internal_send_message
in any test against a simple populate_db database.
(imported from commit 36927f57cbbb7e30ae249b5f1a0549fb352827f5)
If you have a lot of subscriptions that you're trying to modify,
jumping back up to the top of the page is very disruptive. We still
show the success message, which has the effect of scrolling the page
and is thus surprising, but that's better than the user completely
losing their place.
We do need a story for informing users about failures to subscribe or
unsubscribe, though. We currently jump back to the top so they can
see the error, but that's not optimal.
(imported from commit 48d938ddc47f286a72e2147f4459b91ca5684e36)
Waseem Daher
Tim Abbott
Keegan McAllister
Jeff Arnold
Reid Barton
Jessica McKellar
Tyler Hallada
Zev Benjamin