Calling data from different model in Rails
- by Danny McClelland
Hi Everyone,
I need to be able to call data from a different model - not just one field, but any of them.
At the moment I have the following models:
kase
person
company
party
I can call information from the company to the kase and from the person to the kase using this:
<li>Client Company Address: <span class="address"><%=h @kase.company.companyaddress %></span></li>
<li>Case Handler: <span><%=h @kase.person.personname %></span></li>
Those two work, however if I add the following:
<li>Client Company Fax: <span><%=h @kase.company.companyfax %></span></li>
<li>Case Handler Tel: <span><%=h @kase.person.personmobile %></span></li>
<li>Case Handler Email: <span><%=h @kase.person.personemail %></span></li>
Any idea whats wrong?
Thanks,
Danny
EDIT: I get the following error message:
NoMethodError in Kases#show
Showing app/views/kases/show.html.erb where line #37 raised:
You have a nil object when you didn't expect it!
The error occurred while evaluating nil.personname
The lines that are noted are as follows:
34: <div id="clientinfo_showhide" style="display:none">
35: <li>Client Company Address: <span class="address"><%=h @kase.company.companyaddress %></span></li>
36: <li>Client Company Fax: <span><%=h @kase.company.companyfax %></span></li>
37: <li>Case Handler: <span><%=h @kase.person.personname %></span></li>
38: <li>Case Handler Tel: <span><%=h @kase.person.personmobile %></span></li>
39: <li>Case Handler Email: <span><%=h @kase.person.personemail %></span></li>
40: </div>
The model for the kase is as follows:
class Kase
belongs_to :company # foreign key: company_id
belongs_to :person # foreign key in join table
The model for the person is as follows:
class Person
has_many :kases # foreign key in join table
belongs_to :company
The model for the company is as follows:
class Company
has_many :kases
has_many :people
def to_s; companyname; end
Hope this helps!
