Server timeout when editing form

Squiz Matrix Support
1

Matrix Version:5.3.4

We have a number of forms that have issues in editing it in Edit+ interface. When trying to navigate to Content screen (second tab) we got the following error. What’s the best way to debug what has caused this?

Screenshot at Aug 08 09-02-04.png588×308 14.9 KB

More information about the form, it has 4 text fields, 2 dropdown list (select field) and 1 checkbox.

One of the dropdown list has 33 options. I don’t know if this will trigger a red flag as potential issue causing this time out.

2

Using Developer Tool, I found the following error message when the script stopped working:

uncaught exception: Unable to parse serialised data

And after some debugging, it seems that it happens around this:

if (self.nonceToken) {
	data.push(['nonce_token', self.nonceToken]);
	self._http({
		params: data,
		onSuccess: function(json) {
			// Every function should have a dataCallback argument
			if (options.hasOwnProperty('dataCallback')) {
				options.dataCallback.call(this,json);
			}// end if
		}
	});
}

Unfortunately I can’t point out what has caused serialisation throws an exception. JSON data seems to be fine.

After some trial and error, I manage to load the Edit+ interface after cutting down the options of the long drop-down list from 33 to 6. Adding another option which makes it 7 will again break Edit+ interface.

Is there any known limitation on how many options we can have in <select> tag?

3

What are the values of the dropdown list? Does Edit+ break regardless of what the 7th value is?
If any of the values contain anything other than text https://squizmap.squiz.net/matrix/9543 could be related.

4

Hi Jason_Douglas, the values in the dropdown list are just letters and some with brackets () But I have tested and the brackets don’t make any difference.

Edit+ breaks regardless of the 7th value but I am sure we have dropdown list with more than 6 options in other forms. It seems a bit random to me.

5

That seems strange indeed, there isn’t really a max value for select options. Might be some other bug in that version. Might be best to upgrade or send a support ticket into Squiz for them to have a look closer and potentially provide a patch.

6

Thanks @Bart. I have done that :slight_smile: