Related items limit exceeded due to GET request query length

[christophrumpel]

Bug Description

When you have a relationship:fieldtype there is currently a limit of related entries to select due to the fact that a GET request is being used to store them.

In our case, the limit was 216, and it failed with trying to add one more. (see screenshot below)

How to Reproduce

• Use a relationship:fieldtype
• Select around ~217 entries
• Click the select button to save
• See the error

Extra Detail

Given error message:

Selecting the entries:

The issue is similar to #3293, except that we haven't customized any limit. (from what I see)

Environment

Statamic 3.2.4 Pro
Laravel 8.60.0
PHP 8.0.8

Install method (choose one):

• Fresh install from statamic/statamic

[jasonvarga]

There's no problem that you're wanting to select so many items, but I am curious what the use case is there.

[christophrumpel]

I can't tell too much, but it's basically a portal where the client can add items to a city.

[christophrumpel]

Hey @jasonvarga, I didn't realize you are working at Statamic.

We are currently using Statamic for a bigger application where we often have to deal with a large number of collections, entities, and related items/selections like here in my shown case. We know Statamic is an opinionated backend and that's fine.

We just want to make sure it is the right tool for our use case. If this is something Statamic is not built for, please let us know, because otherwise, we might run into similar issues more often on the way.

[mynetx]

One could resort to using POST for storing the selection, or to split the GET request into multiple – but I don’t think that second approach would scale too well, since the more selections, the more requests, the longer the user would have to wait.

[jasonvarga]

It was only a GET route because we were using the CRUD methodology. Changing a route to POST isn't the end of the world.

[christophrumpel]

Hey @jasonvarga,

1. are there plans already to fix that?
2. Regarding my question before: Is this something we will run into in other situations as well when we deal with that amount of items? Are we here working at the limits of Statamic? Again, I don't want to offend anyone here, I just need to know if Statamic is the right tool for us here.

[jasonvarga]

This is next on @jesseleite's list.

I don't think there's a problem with doing what you're doing. Once it's addressed you can try it out.

[christophrumpel]

Thanks @jasonvarga.