Currently have two models
Pay and Wage
Pay has 2 columns (methods) id and name
Wage has 3 columns id, pay_id and name
Pay is set up with:
has_many :wages
Wage is:
belongs_to :pay
First, I believe this is set up correctly , according to Rails idiom.
There are many wages that can be associate with a pay.
However in trying to map wage to pay I''m having a problem with this
line:
(This is an example line:)
<%= select ''model'',''category_id'',
Model.find(@model.id).categories.map
{|x| [x.name, x.id]} %>
The use of ''category_id'' and ''categories'' I
think is throwing me off.
How does category relate to my wage model ?
TIA
Stuart
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Maybe I should provide some additonal explanation in what I''m trying
to accomplish. This is using the KRJS plugin.
In the example:
# View
<%= select ''model'',''id'' %>
<div id=''select-b''>
<%= select ''model'',''category_id'',
Model.find(@model.id).categories.map
{|x| [x.name, x.id]} %>
</div>
#controller:
def on_model_id_change
render :update do |page|
@categories = Model.find(params[:dom_value]).categories
page.replace_html ''select-b'',
:inline=>"<%= select
''model'',''category_id'',
@categories.map {|o|
[o.name, o.id]} %>"
end
end
The thing that is throwing me here is the use of category_id and categories.
Stuart
On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Currently have two models
> Pay and Wage
>
> Pay has 2 columns (methods) id and name
> Wage has 3 columns id, pay_id and name
>
> Pay is set up with:
> has_many :wages
>
> Wage is:
> belongs_to :pay
>
> First, I believe this is set up correctly , according to Rails idiom.
> There are many wages that can be associate with a pay.
>
> However in trying to map wage to pay I''m having a problem with
this line:
> (This is an example line:)
> <%= select ''model'',''category_id'',
Model.find(@model.id).categories.map
> {|x| [x.name, x.id]} %>
> The use of ''category_id'' and
''categories'' I think is throwing me off.
> How does category relate to my wage model ?
>
> TIA
> Stuart
>
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Where does Model and it''s related categories field come from? Jason On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > > Maybe I should provide some additonal explanation in what I''m trying > to accomplish. This is using the KRJS plugin. > > In the example: > # View > <%= select ''model'',''id'' %> > <div id=''select-b''> > <%= select ''model'',''category_id'', Model.find(@model.id).categories.map > {|x| [x.name, x.id]} %> > </div> > > #controller: > def on_model_id_change > render :update do |page| > @categories = Model.find(params[:dom_value]).categories > page.replace_html ''select-b'', :inline=>"<%= select > ''model'',''category_id'', @categories.map {|o| > [o.name, o.id]} %>" > end > end > > The thing that is throwing me here is the use of category_id and > categories. > > Stuart > > > > > > > On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > Currently have two models > > Pay and Wage > > > > Pay has 2 columns (methods) id and name > > Wage has 3 columns id, pay_id and name > > > > Pay is set up with: > > has_many :wages > > > > Wage is: > > belongs_to :pay > > > > First, I believe this is set up correctly , according to Rails idiom. > > There are many wages that can be associate with a pay. > > > > However in trying to map wage to pay I''m having a problem with this > line: > > (This is an example line:) > > <%= select ''model'',''category_id'', Model.find(@model.id).categories.map > > {|x| [x.name, x.id]} %> > > The use of ''category_id'' and ''categories'' I think is throwing me off. > > How does category relate to my wage model ? > > > > TIA > > Stuart > > > > > >--~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
Model in the example is just a holder for the model name I believe. Categories in my model doesn''t exist. so maybe my associations are wrong. In my thinking the pay.id in Pay relates to the pay_id in the Wages table. Yet I keep coming up with nil errors. Stuart On 9/8/06, Jason Roelofs <jameskilton-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Where does Model and it''s related categories field come from? > > Jason > > > On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org > wrote: > > > > Maybe I should provide some additonal explanation in what I''m trying > > to accomplish. This is using the KRJS plugin. > > > > In the example: > > # View > > <%= select ''model'',''id'' %> > > <div id=''select-b''> > > <%= select ''model'',''category_id'', Model.find(@ model.id).categories.map > > {|x| [x.name, x.id]} %> > > </div> > > > > #controller: > > def on_model_id_change > > render :update do |page| > > @categories = Model.find(params[:dom_value]).categories > > page.replace_html ''select-b'', :inline=>"<%= select > > ''model'',''category_id'', > @categories.map {|o| > > [o.name , o.id]} %>" > > end > > end > > > > The thing that is throwing me here is the use of category_id and > categories. > > > > Stuart > > > > > > > > > > > > > > On 9/8/06, Dark Ambient < sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > Currently have two models > > > Pay and Wage > > > > > > Pay has 2 columns (methods) id and name > > > Wage has 3 columns id, pay_id and name > > > > > > Pay is set up with: > > > has_many :wages > > > > > > Wage is: > > > belongs_to :pay > > > > > > First, I believe this is set up correctly , according to Rails idiom. > > > There are many wages that can be associate with a pay. > > > > > > However in trying to map wage to pay I''m having a problem with this > line: > > > (This is an example line:) > > > <%= select ''model'',''category_id'', Model.find(@model.id ).categories.map > > > {|x| [x.name, x.id]} %> > > > The use of ''category_id'' and ''categories'' I think is throwing me off. > > > How does category relate to my wage model ? > > > > > > TIA > > > Stuart > > > > > > > > > > > > > > > >--~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
Your associations and assumptions between Pay and Wage are correct from what you originally posted. Can you post the actual RHTML code that is suspect here? I''m having a hard time understanding the situation here. Jason On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > > Model in the example is just a holder for the model name I believe. > Categories in my model doesn''t exist. > so maybe my associations are wrong. > > In my thinking the pay.id in Pay relates to the pay_id in the Wages > table. > Yet I keep coming up with nil errors.Stuart> > > > On 9/8/06, Jason Roelofs <jameskilton-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > Where does Model and it''s related categories field come from? > > > > Jason > > > > > > On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org > wrote: > > > > > > Maybe I should provide some additonal explanation in what I''m trying > > > to accomplish. This is using the KRJS plugin. > > > > > > In the example: > > > # View > > > <%= select ''model'',''id'' %> > > > <div id=''select-b''> > > > <%= select ''model'',''category_id'', Model.find(@ model.id > ).categories.map > > > {|x| [x.name, x.id]} %> > > > </div> > > > > > > #controller: > > > def on_model_id_change > > > render :update do |page| > > > @categories = Model.find(params[:dom_value]).categories > > > page.replace_html ''select-b'', :inline=>"<%= select > > > ''model'',''category_id'', > > @categories.map {|o| > > > [o.name , o.id]} %>" > > > end > > > end > > > > > > The thing that is throwing me here is the use of category_id and > > categories. > > > > > > Stuart > > > > > > > > > > > > > > > > > > > > > On 9/8/06, Dark Ambient < sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > > Currently have two models > > > > Pay and Wage > > > > > > > > Pay has 2 columns (methods) id and name > > > > Wage has 3 columns id, pay_id and name > > > > > > > > Pay is set up with: > > > > has_many :wages > > > > > > > > Wage is: > > > > belongs_to :pay > > > > > > > > First, I believe this is set up correctly , according to Rails > idiom. > > > > There are many wages that can be associate with a pay. > > > > > > > > However in trying to map wage to pay I''m having a problem with this > > line: > > > > (This is an example line:) > > > > <%= select ''model'',''category_id'', Model.find(@model.id).categories.map > > > > {|x| [x.name, x.id]} %> > > > > The use of ''category_id'' and ''categories'' I think is throwing me > off. > > > > How does category relate to my wage model ? > > > > > > > > TIA > > > > Stuart > > > > > > > > > > > > > > > > > > > > > > > > > > > > >--~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
I''m just going to start this all over - cause I live on the ground
floor so jumping isn''t going to help. I''ve also looked at it
every
which way and Sunday with no luck.
I''m looking at this
linkhttp://www.sciwerks.com/blog/2006/07/07/updating-select-controls-with-ajax/
where it is talking about KRJS plugin. Regardless my particular
question is not related to the plugin ...yet.
The page is talking about updating a second select box based on the
choice user makes in first. It goes on to show an example view:
# View
<%= select ''model'',''id'' %>
<div id=''select-b''>
<%= select ''model'',''category_id'',
Model.find(@model.id).categories.map
{|x| [x.name, x.id]} %>
</div>
So in the example it''s clear that the 2nd select contains a column
that is tied into the first select , category.
So taking my two models Pay and Wage - where Wage contains a method
pay_id I continue to get nil errors in the place @model.id)
Stuart
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<%= select ''pay'', ''id'',
Pay.find(:all).collect {|p| [p.name, p.id]}%>
<div id=''select-b''>
<%= select ''wage'',''pay_id'',
@pay.wages.map {|x| [x.name, x.id]} %>
</div>
You have a nil object when you didn''t expect it!
The error occured while evaluating nil.wages
Stuart
On 9/8/06, Jason Roelofs
<jameskilton-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:> Your associations and assumptions between Pay and Wage are correct from
what
> you originally posted. Can you post the actual RHTML code that is suspect
> here? I''m having a hard time understanding the situation here.
>
>
> Jason
>
> On 9/8/06, Dark Ambient
<sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >
> > Model in the example is just a holder for the model name I believe.
> > Categories in my model doesn''t exist.
> > so maybe my associations are wrong.
> >
> > In my thinking the pay.id in Pay relates to the pay_id in the Wages
> table.
> > Yet I keep coming up with nil errors.
>
> > Stuart
> >
> >
> >
> > On 9/8/06, Jason Roelofs
<jameskilton-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> > > Where does Model and it''s related categories field come
from?
> > >
> > > Jason
> > >
> > >
> > > On 9/8/06, Dark Ambient <
sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org > wrote:
> > > >
> > > > Maybe I should provide some additonal explanation in what
I''m trying
> > > > to accomplish. This is using the KRJS plugin.
> > > >
> > > > In the example:
> > > > # View
> > > > <%= select
''model'',''id'' %>
> > > > <div id=''select-b''>
> > > > <%= select
''model'',''category_id'', Model.find(@
> model.id).categories.map
> > > > {|x| [x.name, x.id]} %>
> > > > </div>
> > > >
> > > > #controller:
> > > > def on_model_id_change
> > > > render :update do |page|
> > > > @categories =
Model.find(params[:dom_value]).categories
> > > > page.replace_html ''select-b'',
:inline=>"<%= select
> > > > ''model'',''category_id'',
> > > @categories.map {|o|
> > > > [o.name , o.id]} %>"
> > > > end
> > > > end
> > > >
> > > > The thing that is throwing me here is the use of category_id
and
> > > categories.
> > > >
> > > > Stuart
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > On 9/8/06, Dark Ambient <
sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org > wrote:
> > > > > Currently have two models
> > > > > Pay and Wage
> > > > >
> > > > > Pay has 2 columns (methods) id and name
> > > > > Wage has 3 columns id, pay_id and name
> > > > >
> > > > > Pay is set up with:
> > > > > has_many :wages
> > > > >
> > > > > Wage is:
> > > > > belongs_to :pay
> > > > >
> > > > > First, I believe this is set up correctly , according
to Rails
> idiom.
> > > > > There are many wages that can be associate with a pay.
> > > > >
> > > > > However in trying to map wage to pay I''m
having a problem with this
> > > line:
> > > > > (This is an example line:)
> > > > > <%= select
''model'',''category_id'', Model.find(@model.id
> ).categories.map
> > > > > {|x| [x.name, x.id]} %>
> > > > > The use of ''category_id'' and
''categories'' I think is throwing me
> off.
> > > > > How does category relate to my wage model ?
> > > > >
> > > > > TIA
> > > > > Stuart
> > > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > >
> > >
> >
> >
> >
> >
>
>
> >
>
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Well, do you ever set @pay in your controller? Jason On 9/8/06, Dark Ambient <sambient-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> > > I''m just going to start this all over - cause I live on the ground > floor so jumping isn''t going to help. I''ve also looked at it every > which way and Sunday with no luck. > I''m looking at this > > linkhttp://www.sciwerks.com/blog/2006/07/07/updating-select-controls-with-ajax/ > where it is talking about KRJS plugin. Regardless my particular > question is not related to the plugin ...yet. > > The page is talking about updating a second select box based on the > choice user makes in first. It goes on to show an example view: > # View > <%= select ''model'',''id'' %> > <div id=''select-b''> > <%= select ''model'',''category_id'', Model.find(@model.id).categories.map > {|x| [x.name, x.id]} %> > </div> > > So in the example it''s clear that the 2nd select contains a column > that is tied into the first select , category. > > So taking my two models Pay and Wage - where Wage contains a method > pay_id I continue to get nil errors in the place @model.id) > > Stuart > > > >--~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---