Rails' collection_select helper method and the “Create item” option at the end
Is it possible to add an at the end of a created with the collection_select helper method?
Right
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Short answer: no.
Long answer: Sure, but you have to be crafty.
Create a class like so:
class New_option_placeholder def id "new" end def name "...or create a new one" end endInstead of passing
@categories, pass@categories+New_option_placeholder.new
If (as indicated by the comments) you're looking for something terser you could
require "ostruct"and then pass@categories + [OpenStruct.new(:id => 'new',:name => '...or create a new one')]to accomplish essentially the same this.讨论(0) -
Agreed on the short answer No and long answer " Be Crafty ", but here's what I just did which I think is simpler than either of these two solutions and worked for me:
Wrap the next line inside erb tags i.e.
<%=and%>:f.collection_select :advertisement_group_id, AdvertisementGroup.find(:all, :order => "name DESC") << AdvertisementGroup.new(:name => "New Group"), :id, :name, :include_blank => trueJust create a new object with
.newand pass in whatever text you want displayed along with:include_blank => true.讨论(0) -
I can't comment otherwise I'd add this to the answer above.
To get the option->value "new","or create a new one".. instead of
f.select(:category_id, @categories.collect {|p| [ p.name, p.id ] } + ['Or create a new one','new'], {:include_blank => 'Please select a category'})do
f.select(:category_id, @categories.collect {|p| [ p.name, p.id ] } + [['Or create a new one','new']], {:include_blank => 'Please select a category'})note the extra [] around the options. This makes the array work as an option,value pair
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You should probably use
selectinstead.Like so:
f.select(:category_id, @categories.collect {|p| [ p.name, p.id ] } + [ [ 'Or create a new one', 'new' ] ], {:include_blank => 'Please select a category'})Good luck!
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