I''m a noob. I''ve trolled the web and groups for help, but I
just don''t
know enough Rails to apply the solutions to my particular problem. I
even got the screencast from Pragmatic Programmers, but still no dice.
I''m having a problem getting my collection_select to initialize with a
previously stored value. I have items and categories, with many items
to one category. When I edit an item, the category list populates
correctly, but I cannot figure out how to set the default to whatever
category was already stored for that item.
Running Rails 2.3.2, here is the code:
*controller:*
def edit
@observation = Observation.find(params[:id])
end
*view:*
<%= f.label "Category" %><br />
<% collection_select(:observation_category_id,
@category_id,
ObservationCategory.find(:all),
:id,
:name,
{:selected => @observation.observation_category_id})
%>
*models:*
class Observation < ActiveRecord::Base
attr_accessible :name, :icon_url, :observation_catategory_id
belongs_to :observation_category
end
class ObservationCategory < ActiveRecord::Base
has_many :observations
end
*html:*
<label for="observation_Category">Category</label><br
/>
<select id="observation_category_id_"
name="observation_category_id
[]"><option value="1">exercise</option>
<option value="2">finance</option>
<option value="3">nutrition</option>
<option value="4">mood</option>
<option value="5">energy</option>
<option value="6">focus</option>
<option value="7">sleep</option>
<option value="8">junk_cat</option>
<option value="9">satiation</option></select>
--~--~---------~--~----~------------~-------~--~----~
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On Apr 7, 5:21 am, LukeG <lgill...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> I''m a noob. I''ve trolled the web and groups for help, but I just don''t > know enough Rails to apply the solutions to my particular problem. I > even got the screencast from Pragmatic Programmers, but still no dice. > > I''m having a problem getting my collection_select to initialize with a > previously stored value. I have items and categories, with many items > to one category. When I edit an item, the category list populates > correctly, but I cannot figure out how to set the default to whatever > category was already stored for that item.collection_select is like the various model helpers in that you do collection_select ''instance_variable_name'', ''method_name'', ... ie in this instance collection_select ''observation'', ''category_id'', ... Seeing as how you''ve already got a form_for setup, you should be able to do f.collection_select ''category_id'', ... Calling it on the form builder means you don''t need to tell rails which object you are working with. Fred> > Running Rails 2.3.2, here is the code: > > *controller:* > def edit > @observation = Observation.find(params[:id]) > end > > *view:* > <%= f.label "Category" %><br /> > <%> collection_select(:observation_category_id, > @category_id, > ObservationCategory.find(:all), > :id, > :name, > {:selected => @observation.observation_category_id}) > %> > > *models:* > class Observation < ActiveRecord::Base > attr_accessible :name, :icon_url, :observation_catategory_id > belongs_to :observation_category > end > > class ObservationCategory < ActiveRecord::Base > has_many :observations > end > > *html:* > <label for="observation_Category">Category</label><br /> > <select id="observation_category_id_" name="observation_category_id > []"><option value="1">exercise</option> > <option value="2">finance</option> > <option value="3">nutrition</option> > <option value="4">mood</option> > <option value="5">energy</option> > > <option value="6">focus</option> > <option value="7">sleep</option> > <option value="8">junk_cat</option> > <option value="9">satiation</option></select>--~--~---------~--~----~------------~-------~--~----~ 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@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
ive come across this problem and as far as my searching took me, collection_select does not support the :selected option. you can handle this by initializing the "selected" value in the controller for the appropriate attribute before rendering the partial. The code you have shown above is slightly flawed in the syntax of collection_select as Fred has already pointed out. I think you want <%= f.collection_select :observation_category_id, ObservationCategory.find(:all), :id, :name %> So in your case, the problem really was the syntax. The above should work for your edit form ie. the correct option will be selected based on the existing value (built into collection_select). The lack of support for the :selected option in collection_select however, is a side issue. Anyone know if there''s a fix for it? Besides initializing the value for it in the controller before rendering the partial? On Apr 7, 12:43 pm, Frederick Cheung <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> On Apr 7, 5:21 am, LukeG <lgill...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > I''m a noob. I''ve trolled the web and groups for help, but I just don''t > > know enough Rails to apply the solutions to my particular problem. I > > even got the screencast from Pragmatic Programmers, but still no dice. > > > I''m having a problem getting my collection_select to initialize with a > > previously stored value. I have items and categories, with many items > > to one category. When I edit an item, the category list populates > > correctly, but I cannot figure out how to set the default to whatever > > category was already stored for that item. > > collection_select is like the various model helpers in that you do > collection_select ''instance_variable_name'', ''method_name'', ... > ie in this instance collection_select ''observation'', > ''category_id'', ... > > Seeing as how you''ve already got a form_for setup, you should be able > to do f.collection_select ''category_id'', ... > Calling it on the form builder means you don''t need to tell rails > which object you are working with. > > Fred > > > > > Running Rails 2.3.2, here is the code: > > > *controller:* > > def edit > > @observation = Observation.find(params[:id]) > > end > > > *view:* > > <%= f.label "Category" %><br /> > > <%> > collection_select(:observation_category_id, > > @category_id, > > ObservationCategory.find(:all), > > :id, > > :name, > > {:selected => @observation.observation_category_id}) > > %> > > > *models:* > > class Observation < ActiveRecord::Base > > attr_accessible :name, :icon_url, :observation_catategory_id > > belongs_to :observation_category > > end > > > class ObservationCategory < ActiveRecord::Base > > has_many :observations > > end > > > *html:* > > <label for="observation_Category">Category</label><br /> > > <select id="observation_category_id_" name="observation_category_id > > []"><option value="1">exercise</option> > > <option value="2">finance</option> > > <option value="3">nutrition</option> > > <option value="4">mood</option> > > <option value="5">energy</option> > > > <option value="6">focus</option> > > <option value="7">sleep</option> > > <option value="8">junk_cat</option> > > <option value="9">satiation</option></select>--~--~---------~--~----~------------~-------~--~----~ 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@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
Thanks for the replies. The code, as y''all noted, was incorrect. This fixed it: collection_select(:observation, :observation_category_id, ObservationCategory.find(:all), :id, :name) I read somewhere that if the :method parameter returns a value in the :value parameter, that value will default to the selected item in the list, and this turned out to be true, thus eliminating the need for :selected. If I understand your points, the f.collection_select syntax is preferred over what I have. I''ll make that update, and thanks for the advice. -Luke On Apr 7, 11:56 pm, Ram <yourstruly.vi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> ive come across this problem and as far as my searching took me, > collection_select does not support the :selected option. > you can handle this by initializing the "selected" value in the > controller for the appropriate attribute before rendering the partial. > > The code you have shown above is slightly flawed in the syntax of > collection_select as Fred has already pointed out. I think you want > > <%= f.collection_select :observation_category_id, > ObservationCategory.find(:all), :id, :name %> > > So in your case, the problem really was the syntax. The above should > work for your edit form ie. the correct option will be selected based > on the existing value (built into collection_select). > > The lack of support for the :selected option in collection_select > however, is a side issue. Anyone know if there''s a fix for it? Besides > initializing the value for it in the controller before rendering the > partial? > > On Apr 7, 12:43 pm, Frederick Cheung <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > wrote: > > > On Apr 7, 5:21 am,LukeG<lgill...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > > I''m a noob. I''ve trolled the web and groups for help, but I just don''t > > > know enough Rails to apply the solutions to my particular problem. I > > > even got the screencast from Pragmatic Programmers, but still no dice. > > > > I''m having a problem getting my collection_select to initialize with a > > > previously stored value. I have items and categories, with many items > > > to one category. When I edit an item, the category list populates > > > correctly, but I cannot figure out how to set the default to whatever > > > category was already stored for that item. > > > collection_select is like the various model helpers in that you do > > collection_select ''instance_variable_name'', ''method_name'', ... > > ie in this instance collection_select ''observation'', > > ''category_id'', ... > > > Seeing as how you''ve already got a form_for setup, you should be able > > to do f.collection_select ''category_id'', ... > > Calling it on the form builder means you don''t need to tell rails > > which object you are working with. > > > Fred > > > > Running Rails 2.3.2, here is the code: > > > > *controller:* > > > def edit > > > @observation = Observation.find(params[:id]) > > > end > > > > *view:* > > > <%= f.label "Category" %><br /> > > > <%> > > collection_select(:observation_category_id, > > > @category_id, > > > ObservationCategory.find(:all), > > > :id, > > > :name, > > > {:selected => @observation.observation_category_id}) > > > %> > > > > *models:* > > > class Observation < ActiveRecord::Base > > > attr_accessible :name, :icon_url, :observation_catategory_id > > > belongs_to :observation_category > > > end > > > > class ObservationCategory < ActiveRecord::Base > > > has_many :observations > > > end > > > > *html:* > > > <label for="observation_Category">Category</label><br /> > > > <select id="observation_category_id_" name="observation_category_id > > > []"><option value="1">exercise</option> > > > <option value="2">finance</option> > > > <option value="3">nutrition</option> > > > <option value="4">mood</option> > > > <option value="5">energy</option> > > > > <option value="6">focus</option> > > > <option value="7">sleep</option> > > > <option value="8">junk_cat</option> > > > <option value="9">satiation</option></select>--~--~---------~--~----~------------~-------~--~----~ 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@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
hey.. thanx man.. i was wondering why my code wasn''t working.. well my problem was similar to yours, but a little bit different.. but you gave me a concrete solution to my problem through this thread.. thanx.. good luck :) On 4월9일, 오전1시19분, LukeG <lgill...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:> Thanks for the replies. The code, as y''all noted, was incorrect. This > fixed it: > > collection_select(:observation, > :observation_category_id, > ObservationCategory.find(:all), > :id, > :name) > > I read somewhere that if the :method parameter returns a value in > the :value parameter, that value will default to the selected item in > the list, and this turned out to be true, thus eliminating the need > for :selected. > > If I understand your points, the f.collection_selectsyntax is > preferred over what I have. I''ll make that update, and thanks for the > advice. > > -Luke > > On Apr 7, 11:56 pm, Ram <yourstruly.vi...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > ive come across this problem and as far as my searching took me, > >collection_selectdoes not support the :selected option. > > you can handle this by initializing the "selected" value in the > > controller for the appropriate attribute before rendering the partial. > > > The code you have shown above is slightly flawed in the syntax of > >collection_selectas Fred has already pointed out. I think you want > > > <%= f.collection_select:observation_category_id, > > ObservationCategory.find(:all), :id, :name %> > > > So in your case, the problem really was the syntax. The above should > > work for your edit form ie. the correct option will be selected based > > on the existing value (built intocollection_select). > > > The lack of support for the :selected option incollection_select > > however, is a side issue. Anyone know if there''s a fix for it? Besides > > initializing the value for it in the controller before rendering the > > partial? > > > On Apr 7, 12:43 pm, Frederick Cheung <frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> > > wrote: > > > > On Apr 7, 5:21 am,LukeG<lgill...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > > > > > I''m a noob. I''ve trolled the web and groups for help, but I just don''t > > > > know enough Rails to apply the solutions to my particular problem. I > > > > even got the screencast from Pragmatic Programmers, but still no dice. > > > > > I''m having a problem getting mycollection_selectto initialize with a > > > > previously stored value. I have items and categories, with many items > > > > to one category. When I edit an item, the category list populates > > > > correctly, but I cannot figure out how to set the default to whatever > > > > category was already stored for that item. > > > >collection_selectis like the various model helpers in that you do > > >collection_select''instance_variable_name'', ''method_name'', ... > > > ie in this instancecollection_select''observation'', > > > ''category_id'', ... > > > > Seeing as how you''ve already got a form_for setup, you should be able > > > to do f.collection_select''category_id'', ... > > > Calling it on the form builder means you don''t need to tell rails > > > which object you are working with. > > > > Fred > > > > > Running Rails 2.3.2, here is the code: > > > > > *controller:* > > > > def edit > > > > @observation = Observation.find(params[:id]) > > > > end > > > > > *view:* > > > > <%= f.label "Category" %><br /> > > > > <%> > > > collection_select(:observation_category_id, > > > > @category_id, > > > > ObservationCategory.find(:all), > > > > :id, > > > > :name, > > > > {:selected => @observation.observation_category_id}) > > > > %> > > > > > *models:* > > > > class Observation < ActiveRecord::Base > > > > attr_accessible :name, :icon_url, :observation_catategory_id > > > > belongs_to :observation_category > > > > end > > > > > class ObservationCategory < ActiveRecord::Base > > > > has_many :observations > > > > end > > > > > *html:* > > > > <label for="observation_Category">Category</label><br /> > > > > <select id="observation_category_id_" name="observation_category_id > > > > []"><option value="1">exercise</option> > > > > <option value="2">finance</option> > > > > <option value="3">nutrition</option> > > > > <option value="4">mood</option> > > > > <option value="5">energy</option> > > > > > <option value="6">focus</option> > > > > <option value="7">sleep</option> > > > > <option value="8">junk_cat</option> > > > > <option value="9">satiation</option></select>