How to filter nested ACF fields?

[roccopung]

Hi,

This is not really an issue for wp-graphql, but rather a general question if someone would like to help me figuring out :)

I am working on an app made with Sveltekit + Wordpress + wpgraphql-acf. Currently, each user with role "administrator", has a relationship field that looks like this:

    {
        "key": "group_6654931ec00c4",
        "title": "UserGroup",
        "fields": [
            {
                "key": "field_6654931f16eca",
                "label": "Luoghi Visitati",
                "name": "luoghi_visitati",
                "type": "relationship",
                "post_type": [
                    "luogo"
                ],               
                "filters": [
                    "search",
                    "post_type"
                ],
                "return_format": "object",
                "bidirectional": 0,
                "show_in_graphql": 1,
                "graphql_description": "",
                "graphql_field_name": "luoghiVisitati",
                "graphql_connection_type": "one_to_many",
                "bidirectional_target": []
            }
        ],
        "location": [
            [
                {
                    "param": "user_role",
                    "operator": "==",
                    "value": "administrator"
                }
            ]
        ],
        "show_in_graphql": 1,
        "graphql_field_name": "usergroup",
        "map_graphql_types_from_location_rules": 0,
        "graphql_types": ""
    }
]

The user can pick among the post type "luogo", and add as many as they want to the "luoghiVisitati" field (image attached below):

If I want to execute the same mutation from the frontend, with the updateUser input options, there is nothing related to the luoghiVisitati field, therefore I tried to add it as an input in php. Currently my mutation looks like this:

mutation UpdateUserGroup {
  updateUser(input: {id: "idUser", luoghiVisitati: "title"}) {
    user {
      usergroup {
        luoghiVisitati {
          nodes {
            ... on Luogo {
              id
              title
            }
          }
        }
      }
    }
  }
}

It's not working, obviously. What is the right approach to make this mutation function?

[roccopung]

SOLVED: the solution was to create a small Wordpress plugin that would add an input to the UserUpdate mutation, check if the input would match my custom post type, and then update the luoghiVisitati using a simple update_field from ACF. Here's the plugin's code:

<?php

add_action('graphql_register_types', function () {
    register_graphql_field('UpdateUserInput', 'luogoId', [
        'type' => 'ID',
        'description' => __('ID of the luogo to add', 'wp-graphql')
    ]);
});

add_action('graphql_user_object_mutation_update_additional_data', function ($user_id, $input, $mutation_name, $context, $info) {
    if (isset($input['luogoId'])) {
        // Sanitize and validate the input
        $luogo_id = absint($input['luogoId']);
        $luogo = get_post($luogo_id);
		
		

        // Check if the post is of the type 'luogo'
        if ($luogo && $luogo->post_type !== 'luogo') {
			$luogo = null;
            throw new \GraphQL\Error\UserError('Luogo non è del post type luogo');
        }
		
		
        
        if (!$luogo) {
            throw new \GraphQL\Error\UserError("Invalid luogo ID: . $luogo_id .");
        } 
		
		
		
        $existingLuoghiVisitati = get_field('luoghi_visitati', "user_{$user_id}");
		
		
		
		// Prevent duplicate
		$existingLuoghiVisitati[] = $luogo_id;
        
				
		update_field('luoghi_visitati', $existingLuoghiVisitati,  "user_{$user_id}");
    }
}, 10, 5);