Virtual field type

Use the Virtual field type to define a virtual field.

Supported virtual field types

oik-fields provides two virtual fields which you can use with the fields= parameter for shortcodes that supports it.

Sample code

In this example, taken from oik-shortcodes we create a virtual field called _oik_sc_the_title_cb which is a checkbox indicating whether or not a shortcode will be expanded during the_title filter processing.

You appear to be a bot. Output may be restricted

  $the_title_args = array( "#callback" => "bw_get_shortcode_expands_in_titles"
                         , "#parms" => "_oik_sc_code" 
                         , "#plugin" => "oik"
                         , "#file" => "shortcodes/oik-codes.php"
                         , "#form" => false
                         , "#hint" => "virtual field"
                         ); 
  bw_register_field( "_oik_sc_the_title_cb", "virtual", "Expands in 'the_title'?", $the_title_args );
  bw_register_field_for_object_type( "_oik_sc_the_title_cb", "oik_shortcodes" );
 

Form display

When displayed in the Fields meta box

bw_fields display

When displayed by [bw_fields] it appears like this.

Notes

Related

• bw_form_field_virtual() – Implement bw_form_field_ hook for ‘virtual’ field
• bw_get_shortcode_expands_in_titles() – Return Yes / No to indicate if a shortcode expands in titles
• bw_theme_field_virtual() – Theme a field of type ‘virtual’

• oik-fields – requirements and implementation overview
• oik-fields – Field Types
  • checkbox field type
  • currency field type
  • date field type
  • email field type
  • noderef field type
  • numeric field type
  • select field type
  • text field type
  • textarea field type
  • URL field type
  • Virtual field type
• oik-fields – Field Attributes
• oik-fields – Implementing a new custom field
• oik-fields – unique features