I am using this code for displaying data to the f.select tag:
<%= f.select :status, STATUSES, {}, :class => 'form-control' %>
The STATUSES hash contains following:
STATUSES = {"A" => 0,
"B" => 1,
"C" => 2,
"D" => 3,
"E" => 4}
How to display from the hash only values smaller than than 4 (so "A", "B", "C" and "D")?
Thank you in advance
Do you mean something like this:
STATUSES.reject { |key, value| value >= 4 }
If so, I would personally create a helper method for it (not sure if you've got access to the STATUSES constant here though):
module StatusHelper
def statuses_collection
STATUSES.reject { |key, value| value >= 4 }
end
end
And in your view:
<%= f.select :status, statuses_collection, {}, :class => 'form-control' %>
STATUSES.select { |key, value| value <=3 } :)
STATUSES.select { |key, value| value < 4 } looks betterI'd reccomend you setup your hash in the controller if that's possible.
However, if you want to do all the business in the select form code you could try something like this:
<%= f.select(:status, options_for_select(STATUSES.map { |key, value| [key, value] if value < 4 }), {}, class: 'form-control') %>
Not perfect but that works in Rails 3.
Without any broader context, I would recommend filtering it in the controller.
def your_controller_method
@statuses = STATUSES.reject{ |k,v| v >= 4 }
end
then in your view:
<%= f.select :status, @statuses, {}, :class => 'form-control' %>
Same as 'reject' above but the conditional looks better
STATUSES.select {|key,value| value < 4}
