Add GF entry verification against existing Pods object

[Dianei]

Issue Overview

GF entry verification against existing Pods object.

Expected Behavior

Add an option to select entry verification

• Verify whether a Gravity Form entry is duplicating an existing Pods entry, based on selectable criteria/fields. (Ex. if fields: "staff_name" and "date_of_birth" match)

• If yes, provide a message to the user with a link to the potential match, asking if the user to would like to continue (Y/N option).
  If no, create the Pods object as usual

• If the user chooses YES, provide a notification option to be able to flag this entry as a potential duplicate to admin.

Current Behavior

Currently if a user enters a new object that is the same as an existing object, the form processes and creates a new Pods object. The admin must then manually delete the newly created object.

Possible Solution

No idea, but wonder if there might be a nifty code someone may have used in the past as a work-around. I would want to make this available for several forms/Pods on my site.

Steps to Reproduce (for bugs)

Form Upload

``` Upload Gravity Form JSON or Copy and Paste it Here. ```

Pods Package Export

``` Copy and Paste the JSON Export from Pods Migrate: Packages, Export and Paste it Here ```

Related Issues and/or PRs

Todos

• Tests
• Documentation

WordPress Environment

``` Debug Information

WordPress Version: 4.9.8

PHP Version: 7.1.22

MySQL Version: 5.6.40

Server Software: Apache

Your User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Safari/605.1.15

Session Save Path: /tmp

Session Save Path Exists: Yes

Session Save Path Writeable: Yes

Session Max Lifetime: 1440

Opcode Cache:

Apc: No
Memcached: No
OPcache: Yes
Redis: No
Object Cache:

APC: No
APCu: No
Memcache: No
Memcached: Yes
Redis: No
WPDB Prefix: wp_

WP Multisite Mode: No

WP Memory Limit: 128M

Pods Network-Wide Activated: No

Pods Install Location: /home/adoptare/public_html/wp-content/plugins/pods/

Pods Tableless Mode Activated: No

Pods Light Mode Activated: No

Currently Active Theme: Twenty Eleven

Currently Active Plugins:

Akismet Anti-Spam: 4.0.8
bbPress: 2.5.14
BuddyPress: 3.2.0
Collapse-O-Matic: 1.7.9
GP Conditional Logic Dates: 1.0.5
Gravity Forms: 2.3.4
Gravity Forms + Custom Post Types: 3.1.13
Gravity Perks: 2.0.11
Jetpack by WordPress.com: 6.5
Pods - Custom Content Types and Fields: 2.7.9
Pods Gravity Forms Add-On: 1.4 Beta
SG Optimizer: 4.0.7
WP-Members: 3.2.4.2
WP DataTable: 0.2.5
WP GDPR Compliance: 1.4.2

</details>

[brunomac]

+1

[martinderm]

A special case of this feature request is when the feed is used to pre populate form-fields but the intention is not to create a now pod at all, but to have a smarter form.

This is currently not possible.