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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