Fields disappearing from template after saving

[Ana]

I had about 300 fields on a template and i was adding on more when after saving they all disappeared i have to re add all again. There was no error message. Has anyone had to deal with this and how was solved? Thanks

 

[zoeck]

Have a look at the log file of your web server to see if an error message appears.

There are also log files from Processwire in this directory: \site\assets\logs

It may be a problem with the PHP setting max_input_vars (that the maximum number has been exceeded)

[Ana]

There are no errors in this directory: \site\assets\logs and my max_input_vars is currently 3000. I will increase and see if that helps. Thanks

[zoeck]

And in the log files from the web server? Are there any entries there?

[Ana]

No there are no errors

[Ana]

unfortunately the increase of my max_input_vars  did not help the fields have disappeared again

[elabx]

@adrian this looks oddly similar to what happened with the repeater matrix

[adrian]

@elabx - yeah, maybe - I think in both cases it would happen if the fieldgroup_fields table was incorrectly updated. @ryan??

[Ana]

Ok so how do i avoid this from happening again?

 

[Ana]

Ok i have successfully saved the template with about 420 fields. Now when i try to populate the fields in the individual pages. I get the error " InputfieldForm: Max number of iterations reached for processing field dependencies - ProcessPageEdit." Any suggestions on how to fix this?

Additional information is 390 fields of the 420 fields  in the  template use field dependecies could that be a problem?

 

 

Edited March 10, 2025 by Aby

[dynweb]

https://github.com/processwire/processwire/blob/4725ece5f86374a8de73d132e54b0ac4c9ae1f09/wire/modules/Inputfield/InputfieldForm.module#L274

There seems to be an upper limit of 255 dependencies, probably for performance reasons.

[Ana]

Thanks.. when i began deleting the dependencies the was no error

[Ana]

The problem has occurred again after 2 weeks. I tried to save some changes and almost all my fields on the template have disappeared again. I need help please.

[wbmnfktr]

Is there a chance you are using RockMigrations and somehow triggered an older migration that removed fields from that template?

Happened to me yesterday and took me a while to find. And to make it clear: it's intended behaviour - see screenshot.

The minus tells RockMigrations to only have listed fields in that template.
Without the minus I could add fields via backend and run migrations without removing manually added fields.

[Ana]

No i do not use RockMigrations. I do not know whether the number of pages using the template and the number of fields on the template can cause this. 

[Jim Bailie]

I don't have the expertise in PW that some here have, so I would just ask in a general sense, isn't 480 fields pushing it a bit?

At that point, aren't you better using the most excellent ProFields module or your own database tables? Just curious...

[Ana]

Ok i have to discuss ProFields since it involves some cost but about the database tables can you give me some more information? I have no idea what that is

 

[elabx]

There is a discussion going on here that could involve what's happening to you (and some of us!): 

https://github.com/processwire/processwire-issues/issues/2061