I'm trying to display a drop-down menu by using an instance variable
from a model.
THIS WORKS...
<div class="field">
<%= f.label :duration %><br />
<%= f.select ("duration", {"30 minutes" => "30", "1 hour" => "60"},
:prompt => "Select") %>
</div>
THIS DOESN'T WORK...
Now, I want to populate the values from the model like this
@durations = {"30 minutes" => "30", "1 hour" => "60", "1 hour 30
minutes" => "90", "2 hours" => "120"}
Then in the form partial I have this
<div class="field">
<%= f.label :duration %><br />
<%= f.select ("duration", @durations.map {|d| [d.id, d.name]}, :prompt
=> "Select") %>
</div>
I get this error:
You have a nil object when you didn't expect it!
You might have expected an instance of Array.
The error occurred while evaluating nil.map
How can I initialize an instance variable or instance hash and then use
it on the form for the drop-down menu?
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