Ruby on Rails 3 Select Helper Question

Have have t开发者_开发问答his line of code in my form when I create a new item. Though when I edit the item, the default selection isn't the one that is selected. Do I need to set the initial value?

<%= f.select :category, options_for_select(Item::CATEGORIES) %>

options_for_select accepts second param which identifies the selected value.

try

<%= f.collection_select :category_id, Item::CATEGORIES, :downcase, :titleize %>

It assumes your Item::CATEGORIES gives a array of strings of categories.

for each category in Item::CATEGORIES, category.downcase will be used as the option's value, while category.titleize will be used as the option's text.

ie.

<option value="<%= cate.downcase %>"><%= cate.titleize %></option>

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or you could:

<%= f.select :category, options_for_select(Item::CATEGORIES, @cur_obj.category.id) %>