Hi all,
We're using Moodle 2.4.3. Lately when some students post in the forums it will create 3 of their posts. Usually 2 are posted with the same time and one a second later. Everything is the same in the post. People are using desktops or laptops, not iPads/phones when this happens. Any idea why and what I could do to prevent this?
Interesting, I have been having the same problem this semester. I am running Moodle 2.5.1+.
It doesn't happen for every post, in fact, very few.
My guess is that my server might be a little slow, and students click two times on the Post button, which Moodle then sees twice. It actually happened once to me, so I knew that I has clicked twice.
It might also have something to do with students using the Macintosh (which I use). On the Mac, you can go back by right-swipping the magic mouse or trackpad. I once did this accidentally, the swipped left, then submitted, and I ended up with two posts.
Hey, just for fun, I am going to click-click the "Post to forum" button (below) to see if my post to you gets recorded twice.
Since I now have a Mac, I also wonder if it has something to do with Safari?
We will have to experiment a little more. (Okay, here's my click-click, let's see what happens.)
I wonder if this could be a more common problem for people who use Macs. On a Mac, one typically might click on their browser to make it active (if they are currently in a different app), and then click on a link (or button) to initiate its action. So some Mac users might be more commonly clicking twice (even though their browser is the active application).
Just a few more thoughts on this topic. What do you think?
Is it a "bug" when someone double clicks? Maybe not, but maybe so. Maybe there should be some code that catches this kind of problem. Maybe something like "only act on the first click" because I cannot see why anyone would want to make two identical posts.
I haven't reported it in Tracker. Maybe I could over the next day or so. Let me know if you beat me to it.
Rebecca, I just added this to Moodle Tracker. Please go there and vote for it.
MDL-41730 - Double posts occur when the user double clicks on "Post to Forum" button has been successfully created.
While you are at it, could you vote for MDL-31355. This one suggests that a forum due date be automatically added to the Calendar, which right now it is not. Thanks.
Interesting, I have been having the same problem this semester. I am running Moodle 2.5.1+.
It doesn't happen for every post, in fact, very few.
My guess is that my server might be a little slow, and students click two times on the Post button, which Moodle then sees twice. It actually happened once to me, so I knew that I has clicked twice.
It might also have something to do with students using the Macintosh (which I use). On the Mac, you can go back by right-swipping the magic mouse or trackpad. I once did this accidentally, the swipped left, then submitted, and I ended up with two posts.
Hey, just for fun, I am going to click-click the "Post to forum" button (below) to see if my post to you gets recorded twice.
Since I now have a Mac, I also wonder if it has something to do with Safari?
We will have to experiment a little more. (Okay, here's my click-click, let's see what happens.)
I don't have the knowledge to submit a real fix but I made a script which disables the button on the client side so it can't be double-clicked if the validation code passes
I put it in the head section of my Appearance -> Additional HTML
<script type="text/javascript">
window.onload=function(){
if(document.getElementById("mformforum"))
{
document.getElementById('mformforum').setAttribute("onsubmit",
"try { var myValidator = validate_mod_forum_post_form; } catch(e) { return true; } var result= myValidator(this); if (result){document.getElementById('id_submitbutton').disabled=true}return result;"
);
}
};
</script>
I've only put this here because it might help someone, it's a messy fix which could easily break if you update moodle
