update the value of array of objects in rails

Question

I'm retrieving data from database in ruby on rails.I have to update the Date retrieved with a new formatted date in controller.
Something like this one:-

   @events = 'My Query.'
   @events.each do |eventdata|
      # Since the date is in utc i have to convert it in users time zone.
      eventdata.start_date = eventdata.start_date.strftime("%Y-%m-%d %H:%M:%S")
    end

But its not working. Need some help on this.

It's not working. I see.

Benoît
– Benoît

2012-12-07 06:49:12 +00:00
Commented Dec 7, 2012 at 6:49 — Benoît
– Benoît, Commented Dec 7, 2012 at 6:49

rorra · Accepted Answer · 2012-12-07 07:44:58Z

2

This is a monkey patch to format the date of all the DateTimes when being converted to json:

class ActiveSupport::TimeWithZone
  def as_json(options = {})
      strftime('%Y-%m-%d %H:%M:%S')
  end
end

put that on

/config/initializers/json_date_path.rb

and that's all.

answered Dec 7, 2012 at 7:44

rorra

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1 Comment

Sachin Prasad Over a year ago

Thanks so much ... finally got solved ...was working on this from yesterday :)

rorra · Accepted Answer · 2012-12-07 06:57:50Z

2

You cannot change the format of the field, its a DateTime, you will have to use a method for that

def formated_start_date
  start_date.strftime("%Y-%m-%d %H:%M:%S")
end

However, you can change the format of the datetimes for all the database records, by creating the file config/initializers/date_time_formats.rb and add some content like

Time::DATE_FORMATS[:default] = "%Y-%M-%d %H:%M:%S"

answered Dec 7, 2012 at 6:57

rorra

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3 Comments

Sachin Prasad Over a year ago

And how can i update this value ? eventdata.start_date = eventdata.formated_start_date ?... Actually i'm converting that event object to json which is used in calendar and therefore i have to format it in controller.

rorra Over a year ago

I need more words about what you are trying to do. What you are trying to do is to format the date before the object is converted to json? Or you are trying to change the way you format the DateTime before it is persisted into the database?

Sachin Prasad Over a year ago

I'm trying to format the date before the object is converted to json

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