set empty default values for the field, without overwriting existing field values

[ahebrank]

The problem and a potential solution is suggested by PR #19 but in practice this seems to overwrite any existing value for the field. Need a way to set null values for a field, but only if the field is actually empty.

[JonatanJJ]

Maybe doing an array_merge would work better?
$field['value'] = array_merge($this->defaults['value'], $field['value']);

This will make sure that only values missing from $field['value'] will be overwritten.

[ahebrank]

@Jontis00, can you describe steps to replicate the original issue? I've never actually seen the PHP warnings.

[JonatanJJ]

Depending on your PHP warning setting the error may or may not show.
On one of my sites I can replicate the issue by editing a page with an empty Link picker field.

The reason for the issue is that $field['value'] defaults to null. But in the render_field function we keep referencing $field['value']['url'] for example which means we are trying the access an index of a null value. Which may cause a warning on some configurations.

[defaria]

So.. how do you go about setting the field's default_value? I tried passing an array, but it didn't work.