Hi,
I am having difficulties accessing parent properties/attributes from
the child. Anyone could shed some lights onto this?
Heres a sample code:
class Parent < ActiveRecord::Base
:has_many => :childs
@connector
def before_save
@connector = ‘some connector object’
0…9.do |count|
self.childs << Child.new
self.childs[count].connector = @connector
end
end
end
class Child < ActiveRecord::Base
:belongs_to => :parent
@connector
def before_save
# code goes here to access @connector
end
end
The above is just a recreation of what I am looking to do. So
basically I want to be able to access objects like the connector from
the child, or even the parent itself by something like
self.parent.attributes.
Any ideas?
thanks,
nayeem
Hi, when I saw your models, I was thinking that you should have the
following relationships:
Parent has many children
Child has many parents
Thus, you should have the following database tables: children and
parents. By doing this, this becomes a many to many relationship.
Good luck,
-Conrad
Sent from my iPhone
On Jun 7, 2009, at 1:35 AM, developerinlondon [email protected]
No I need to have it so that Child has one parent.
I managed to get a reference to the parent by using the ObjectSpace. But
its
almost a hack then a nice way of doing it.
2009/6/7 Conrad T. [email protected]
Hi,
@connector = ‘some connector object’
def before_save
thanks,
nayeem
–
cashflowclublondon.co.uk
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developerinlondon wrote:
Hi,
I am having difficulties accessing parent properties/attributes from
the child. Anyone could shed some lights onto this?
Heres a sample code:
[…]
Your sample code will not do the job. All you need is
class Parent > ActiveRecord::Base
has_many :children
end
class Child > ActiveRecord::Base
belongs_to :parent
end
…and parent.children and child.parent will work as you’d like.
@connector is unnecessary.
Check the docs for Associations; Rails makes this ridiculously simple.
Best,
Marnen Laibow-Koser
http://www.marnen.org
[email protected]
That Works! Thanks!
2009/6/7 Marnen Laibow-Koser [email protected]
Your sample code will not do the job. All you need is
@connector is unnecessary.
–
cashflowclublondon.co.uk
("`-''-/").___..--''"`-._
`6_ 6 ) `-. ( ).`-.__.`)
(_Y_.)' ._ ) `._ `. ``-..-'
_..`--'_..-_/ /--'_.' ,'
(il),-'' (li),' ((!.-'
.