I found a way to do it. To convert the multi-parameter attributes that are
submitted in the form to a specific time zone, add a method in your
controller to manually convert the params into a datetime object. I chose
to add this to the controller because I did not want to affect the model
behavior. You should still be able to set a date on the model and assume
your date was set correctly.
def create
convert_datetimes_to_pdt("start_date")
convert_datetimes_to_pdt("end_date")
@model = MyModel.new(params[:my_model])
# ...end
def update
convert_datetimes_to_pdt("start_date")
convert_datetimes_to_pdt("end_date")
# ...end
def convert_datetimes_to_pdt(field)
datetime = (1..5).collect {|num| params['my_model'].delete
"#{field}(#{num}i)" }
if datetime[0] and datetime[1] and datetime[2] # only if a date has been set
params['my_model'][field] = Time.find_zone!("Pacific Time (US &
Canada)").local(*datetime.map(&:to_i))
endend
Now the datetime will be adjusted to the correct time zone. However, when
the user goes to edit the time, the form fields will still display the time
in UTC. To fix this, we can wrap the fields in a call toTime.use_zone:
Time.use_zone("Pacific Time (US & Canada)") do
f.datetime_select :start_dateend
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