# Question about form with one-to-one models

**URL:** <https://www.ruby-forum.com/t/question-about-form-with-one-to-one-models/111470>\
**Category:** Rails\
**Created:** [August 7, 2007, 6:21pm UTC](https://www.ruby-forum.com/t/question-about-form-with-one-to-one-models/111470 "2007-08-07T18:21:28Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![huang\_zhimin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/54ee81/32.png) [@huang\_zhimin](https://www.ruby-forum.com/u/huang_zhimin)\
**Post date:** [August 7, 2007, 6:21pm UTC](https://www.ruby-forum.com/t/question-about-form-with-one-to-one-models/111470/1 "2007-08-07T18:21:28Z")

</div>

For example, I have two models Person and Address, that one person has  
one  
address.

class Person \< ActiveRecord::Base  
has\_one :address  
end

class Address \< ActiveRecord::Base  
belongs\_to :person  
end

Now, I want to write a form to create a person including an address

Name  
\<%= text\_field 'person', 'name', :size =\> 10 %\>

......

Country  
\<%= text\_field 'person', 'address.country' %\>

 # i think it will map to person.address.country, but it doesn't work, how can i do it? ......

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