Folks,
This is my situation. I have a form where I create a Parent Object and
Two Child object. This is all in one form. In my Controller create.. I
need to do validation on all three(parent and 2 child).
But my child object needs validate a attribute against a attribute of
the parent. To summarize..
Parent{:age => 50}
child {:age => 10}
In child validation a like to say
def validate
if self.age > self.parent.age
# errror
end
end
But the problem is the parent is new and not in the database yet. So the
question is how can I pass a object to the child''s validation. I would
like to say something like child.valid?(parent)
I am using hack right now to have a method on the child object and doing
that. Is there more of a standard way to pass a object rails validation
methods?
AJ
--
Posted via http://www.ruby-forum.com/.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Ruby on Rails: Talk" group.
To post to this group, send email to
rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
For more options, visit this group at
http://groups.google.com/group/rubyonrails-talk
-~----------~----~----~----~------~----~------~--~---
Ajaya Agrawalla wrote:> This is my situation. I have a form where I create a Parent Object and > Two Child object. This is all in one form. In my Controller create.. I > need to do validation on all three(parent and 2 child). > > But my child object needs validate a attribute against a attribute of > the parent. To summarize.. > > Parent{:age => 50} > child {:age => 10} > > In child validation a like to say > def validate > if self.age > self.parent.age > # errror > end > end > > But the problem is the parent is new and not in the database yet. So the > question is how can I pass a object to the child''s validation. I would > like to say something like child.valid?(parent)Just set child.parent to the parent object, even if the parent object is new. This is normally done in the controller as @child = @parent.build_child(params[:child]) which is equivalent to @child = Child.new(params[:child]) @child.parent = @parent -- We develop, watch us RoR, in numbers too big to ignore. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
Well.. Seems like this doesn''t work. @p = Parent.new(params[:parent]) @c = @p.childs.build(params[:child]) @c.parent is set to nil and I see that @c.parent_id is set 1 even id @p is new. The @p.build_child method not there.. Any idea what I am doing wrong? AJ On Oct 8, 6:30 am, Mark Reginald James <m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org> wrote:> Ajaya Agrawalla wrote: > > This is my situation. I have a form where I create a Parent Object and > > Two Child object. This is all in one form. In my Controller create.. I > > need to do validation on all three(parent and 2 child). > > > But my child object needs validate a attribute against a attribute of > > the parent. To summarize.. > > > Parent{:age => 50} > > child {:age => 10} > > > In child validation a like to say > > def validate > > if self.age > self.parent.age > > # errror > > end > > end > > > But the problem is the parent is new and not in the database yet. So the > > question is how can I pass a object to the child''s validation. I would > > like to say something like child.valid?(parent)Just set child.parent to the parent object, even if the parent object is new. > This is normally done in the controller as > > @child = @parent.build_child(params[:child]) > > which is equivalent to > > @child = Child.new(params[:child]) > @child.parent = @parent > > -- > We develop, watch us RoR, in numbers too big to ignore.--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
AJAY A wrote:> Well.. Seems like this doesn''t work. > > @p = Parent.new(params[:parent]) > @c = @p.childs.build(params[:child]) > > @c.parent is set to nil and I see that @c.parent_id is set 1 even id @p > is new.Is params[:child][:parent_id] set? In any case, looking at the core source I see that build does not in fact assign a new parent. You have to use the explicit method I posted: @child = Child.new(params[:child]) @child.parent = @parent> The @p.build_child method not there..Yes, that''s for has_one. You have a has_many. -- We develop, watch us RoR, in numbers too big to ignore. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---
params[:child][:parent_id] is not known until the record is saved. Anyway.. I would use the explicit method. Thanks for the help AJ On Oct 8, 12:08 pm, Mark Reginald James <m...-bzGI/hKkdgQnC9Muvcwxkw@public.gmane.org> wrote:> AJAY A wrote: > > Well.. Seems like this doesn''t work. > > > @p = Parent.new(params[:parent]) > > @c = @p.childs.build(params[:child]) > > > @c.parent is set to nil and I see that @c.parent_id is set 1 even id @p > > is new.Is params[:child][:parent_id] set? > > In any case, looking at the core source I see that build does not in fact > assign a new parent. You have to use the explicit method I posted: > > @child = Child.new(params[:child]) > @child.parent = @parent > > > The @p.build_child method not there..Yes, that''s for has_one. You have a has_many. > > -- > We develop, watch us RoR, in numbers too big to ignore.--~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk-unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk -~----------~----~----~----~------~----~------~--~---