UUID attribute type failing validation check on Create and Update.

[chaitanyya]

Describe the bug
After migrating to Strapi v3.2.x all our models that have attribute "type": "uuid" fail for Create and Update requests. Once I removed the attribute definitions from the model settings all Create and Update requests work as expected. I believe it's because of the failing validation check.

Steps to reproduce the behavior

1. Define a model with an attribute with "type": "uuid"
2. Try to create or update an entry from this model.
3. The request fails with HTTP 500
4. You see Error: invalid.input in the logs.

Expected behavior
The request should not fail and the entry should be created in the database. I'm using Postgres default UUID generator to handle the generation part so no check or support is required on the Strapi side as long as Strapi allows this type to exist in the model. Basically return whatever is in the database.

Code snippets

Model Definition:

{
  "kind": "collectionType",
  "collectionName": "tests",
  "info": {
    "name": "Test"
  },
  "options": {
    "increments": true,
    "timestamps": true
  },
  "attributes": {
    "uField": {
      "type": "uuid",
      "configurable": false
    },
    "Name": {
      "type": "string"
    },
    "Type": {
      "type": "string"
    }
  }
}

Error Logged:

[2020-10-12T10:17:09.055Z] error Error: invalid.input
  at formatYupErrors (/srv/app/node_modules/strapi-utils/lib/validators.js:45:11)
  at Object.validateEntityUpdate (/srv/app/node_modules/strapi/lib/services/entity-validator/index.js:177:65)
  at Object.update (/srv/app/node_modules/strapi-plugin-content-manager/controllers/ContentManager.js:316:34)
  at async /srv/app/node_modules/strapi/lib/middlewares/router/utils/routerChecker.js:79:22
  at async module.exports (/srv/app/node_modules/strapi-plugin-content-manager/config/policies/routing.js:52:3)
  at async /srv/app/node_modules/strapi-utils/lib/policy.js:68:5
  at async /srv/app/node_modules/strapi/lib/middlewares/parser/index.js:48:23
  at async /srv/app/node_modules/strapi/lib/middlewares/xss/index.js:26:9
[2020-10-12T10:17:09.055Z] debug PUT /content-manager/explorer/application::test.test/2 (57 ms) 500

System

• Node.js version: 12.18.2
• Yarn version: 1.22.4
• Strapi version: 3.2.3
• Database: Postgres
• Operating system: MacOS

[sam899]

I'm seeing the same error, but I dont have a UUID field in my models. Still trying to track down which attribute is causing the issue.

[chaitanyya]

Interesting, for me it only happens when there is an UUID attribute. Maybe you found another attribute that might cause the issue. For now I've removed all UUID fields.

[sam899]

Looks like for me, I have some custom fields that seems to be the cause of the issue.

I created the field types as per:
https://strapi.io/documentation/v3.x/plugin-development/frontend-field-api.html#registering-a-new-field

I can't remove these fields, so I'll have to rollback a version until this is resolved.