update_field / update_sub_field not working in custom rest-api endpoint

• dankurf

• November 17, 2020 at 12:06 pm

I am trying to update a sub field in a custom rest api endpoint.

Structure of my acf is as follows:

        "fields": [
            {
                "key": "field_5faa2483959b9",
                "label": "field group",
                "name": "field_group",
                "type": "group",
                "instructions": "",
                "required": 0,
                "conditional_logic": [
                    [
                        {
                            "field": "field_5faa23d8959b8",
                            "operator": "==",
                            "value": "content"
                        }
                    ]
                ],
                "wrapper": {
                    "width": "",
                    "class": "",
                    "id": ""
                },
                "layout": "block",
                "sub_fields": [
                    {
                        "key": "field_5fadbecbfcc8a",
                        "label": "field_1",
                        "name": "field_1",
                        "type": "post_object",
                        "instructions": "",
                        "required": 0,
                        "conditional_logic": 0,
                        "wrapper": {
                            "width": "",
                            "class": "",
                            "id": ""
                        },
                        "post_type": [
                            "writer"
                        ],
                        "taxonomy": "",
                        "allow_null": 0,
                        "multiple": 0,
                        "return_format": "id",
                        "ui": 1
                    },
                    {
                        "key": "field_5fa0795d696df",
                        "label": "field_2",
                        "name": "field_2",
                        "type": "text",
                        "instructions": "",
                        "required": 0,
                        "conditional_logic": 0,
                        "wrapper": {
                            "width": "",
                            "class": "",
                            "id": ""
                        },
                        "default_value": "",
                        "placeholder": "",
                        "prepend": "",
                        "append": "",
                        "maxlength": ""
                    }
                ]
    

This is the callback I am running on the endpoint:

function assign_subfield_val( $request ) {

$parameters = $request->get_params();
$project = $parameters['project']; //number
$writer = $parameters['writer']; //number
  if($writer != '' && $project != ''){

	update_sub_field(array('field_5faa2483959b9', 1, 'field_5fadbecbfcc8a'), $writer, 2527);
	
	return gettype($project);
  }else{
	  return $parameters;
  }

}

I have use update_field and update_sub_field, used both names and IDs, nothing is working.

If I try to update a top-level field this way it works, but having issues with the sub field. Please help!

• John Huebner

• November 18, 2020 at 2:53 am

Does row 1 of the repeater already exist?

is $writer the post ID of the post you trying to set the relationship to?

• dankurf

• November 18, 2020 at 3:11 pm

Actually my mistake was this was not a repeater field. What I ended up doing was

`
update_post_meta($project, ‘project_type_content_content_external_writer’, $writer);
`

Which appears to work fine.