Colin, thanks for your response. I have moved a bit further on my original
problem of updating the through table.
I now have in my *controller*:
def new
@style = Style.new
@style.stylefeatures.build
@features = Feature.all
end
def create
@style = Style.new(params[:style])
@style.stylefeatures.build
@style.save
end
...and in my *style* *model*
*
*
attr_accessible :stylefeatures_attributes
has_many :stylefeatures
has_many :features, :through => :stylefeatures, :foreign_key =>
:feature_id
accepts_nested_attributes_for :stylefeatures
... and in my *stylefeature model*
belongs_to :style
belongs_to :feature
accepts_nested_attributes_for :feature
... and in my *feature model*
attr_accessible :description, :fullname, :name
has_many :stylefeatures
has_many :styles, :through => :stylefeatures, :foreign_key => :style_id
... and in my *create form*
<%= m.simple_fields_for :stylefeatures do |p| %>
<%= p.input :feature_id, :label => "Features", :collection =>
@features, :input_html => { :multiple => true } %>
<% end %>
Now when I save the new Style, the stylefeatures table is updated with the
appropriate style_id, but with two useless entries. The first is an array
with all of the feature ids which have been selected in the form. The
second is a blank entry with the appropriate style_id and nothing in the
feature_id column.
Do you have any clue of what I might be doing wrong, or how to spread the
collected feature_id's into the table as desired?
Thanks,
Abram
On Mon, May 21, 2012 at 9:15 AM, Colin Law <clan...@googlemail.com> wrote:
> On 20 May 2012 21:01, Abram <funkdif...@gmail.com> wrote:
> > I have a form used to create a 'Style'. The style may have any number of
> > 'features' which correspond to 'Feature' models in the features table. I
> > would like to add the appropriate entries to a relationship table
> > ('stylefeatures') whenever a Style is created. Here is a breakdown of my
> > models:
> >
> > class Style < ActiveRecord::Base
> >
> >
> > has_many :stylefeatures
> >
> >
> > has_many :features, :through => :stylefeatures, :foreign_key =>
> > :feature_id
> >
> >
> > accepts_nested_attributes_for :stylefeatures
> >
> >
> > end
> >
> >
> >
> > class Feature < ActiveRecord::Base
> >
> >
> > has_many :stylefeatures
> >
> >
> > has_many :styles, :through => :stylefeatures, :foreign_key => :style_id
> >
> >
> > end
> >
> >
> >
> > class Stylefeature < ActiveRecord::Base
> >
> >
> > belongs_to :style
> >
> >
> > belongs_to :feature
> >
> >
> > accepts_nested_attributes_for :features
>
> I don't know whether this is part or all of the problem, but you can't
> have :features here as it is belongs_to, so it should be singular (if
> you need it at all).
>
> By the way please don't post html, or at least not complex html, it
> makes the reply quoting very messy as you can see.
>
>
> Colin
>
> >
> >
> > end
> >
> >
> > ...and here is my controller for the 'new' action:
> >
> > def new
> >
> >
> > @style = Style.new
> >
> >
> > @features = Feature.all
> >
> >
> > end
> >
> >
> > ...and here is my form:
> >
> > <%= simple_form_for @style, :html => { :class => 'form-horizontal' } do
> |m|
> > %>
> >
> >
> > <%= m.simple_fields_for :features do |p| %>
> >
> >
> > <%= p.input :name, :label => "Features", :collection => @features,
> > :input_html => { :multiple => true } %>
> >
> >
> > <% end %>
> >
> >
> > [....]
> > <% end %>
> >
> >
> > Right, so the list of features DOES load up into the multiple select box
> > within my form. So that's sweet. However, when I go to submit I receive
> the
> > error: No association found for name 'features'. Has it been defined yet?
> >
> > I get the exact same error when adding @style.features.build to the
> > controller 'new' action.
> >
> > This is what the params hash looks like. It carries the ID of the feature
> > name selected.
> >
> > "features"=>{"name"=>["","7"]}
> >
> >
> > So my question is, how do I go about loading the features listed in the
> > features table for the nested form, and on form submission, handle the
> > selected features for addition to the stylefeatures relationship table.
> >
> > Thanks very much
> >
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