Pass the id of one node by url for new node

Question

I have 2 content types, person and date. Date have a relation with person, in one node of person, you can see the dates of that person.

I want add a link in the nodes of person for add a date for that person (this is easy), i need pass the id of the person node automatically to the new node of date.

I don't know how to do this, anyone can help me?

Thanks.

EDIT:

Will try to explain it better:

I use node reference module for create the relation between the two content types. When i add a node of date, all fields are in blanc, if i add one date node through node of person, the id of that node, will add automatically to the new date node in the field that relation the two content types.

Answer 1

One easy way to do this is with the module

nodereference_url

The Node Reference URL Widget module adds a new widget to the Node Reference field type. It auto-populates a node reference field with a value from the URL, and does not allow this value to be changed once set. It can automatically provide a link on the referencing node types, that will contain the proper URL to prepopulate the field.