Is there a way to create in a new custom field the functionality in an Individuals "Current Employer" field?
For example, trying to create a generic "Organizational Affiliation"...
How to create the relationship between the Individual and this Organization? And if the organization does not already exist then to create it on-the-fly?
Then this field could be added to profile for use contribution page for membership signup.
Edit: This is on Drupal.
Edit: This question turning into "How to create relationships between contacts on contribution pages?" I started out saying "in a new custom field" but new custom field isn't important and as @Coleman points out is bad idea. But some sort of field that allows constituent to enter name of another contact they're related to and have the relationship get created upon form submission.