can_write_field

Filter user permission to see a custom field in submit forms.

You need to have a working knowledge of Hooks before you get started.

#Parameters

#Boilerplate Code

Use the boilerplate code to start using the filter, and add your own logic to modify the first argument and return it.

Clickfwd\Hook\Filter::add('can_write_field', function($permission, $params)
{
    // Uncomment line below to view available data passed into hook
    // fwd_dd($permission, $params);

    return $permission;
});

#Examples

• Prevent Changes to Custom Fields Content on Listing Updates

#Prevent Changes to Custom Fields Content on Listing Updates

In this example users can fill out the content for fields `jr_fieldone`, `jr_fieldtwo`, `jr_fieldthree` while creating a new listing, but they are prevented from changing them afterwards. Only administrators will have access to the fields while editing listings.

Clickfwd\Hook\Filter::add('can_write_field', function($permission, $params) 
{
	$auth = S2Object::make('auth');

	$fieldNames = ['jr_fieldone','jr_fieldtwo','jr_fieldthree'];

	if ($auth->admin || $params['referrer'] !== 'listing.update')
	{
		return $permission;
	}

	if (in_array($params['field']['name'], $fieldNames))
	{
		return false;
	}

  	return $permission;
});

#Source Files

• /services/authorization/listing_permissions.php