AddToCalendar

A ruby gem to generate 'Add To Calendar' URLs for Android, Apple, Google, Office 365, Outlook, Outlook.com and Yahoo calendars.

If this gem brings you some value feel free to buy me a coffee :)

Add this line to your application's Gemfile:

gem 'add_to_calendar'

And then execute:

$ bundle

Or install it yourself as:

$ gem install add_to_calendar

• Ruby 2.0 or higher

# create new instance, adding your event attributes
@cal = AddToCalendar::URLs.new(
        start_datetime: Time.new(2020,12,12,13,30,00,0), 
        title: "Christmas party!", 
        timezone: 'Europe/London'
      )

# access 'add to calendar' URLs
@cal.google_url
#=> "https://www.google.com/calendar/render?action=TEMPLATE&text=Christmas%20party%21&dates=20201212T133000/20201212T143000&ctz=Europe/London"

@cal.yahoo_url
#=> "https://calendar.yahoo.com/?v=60&view=d&type=20&title=Christmas%20party%21&st=20201212T133000Z&dur=0100"

@cal.office365_url
#=> "https://outlook.office.com/calendar/0/deeplink/compose?path=/calendar/action/compose&rru=addevent&subject=Christmas%20party%21&startdt=2020-12-12T13:30:00Z&enddt=2020-12-12T14:30:00Z"

# For outlook.com, different to Outlook the desktop application below
@cal.outlook_com_url
#=> "https://outlook.live.com/calendar/0/deeplink/compose?path=/calendar/action/compose&rru=addevent&subject=Christmas%20party%21&startdt=2020-12-12T13:30:00Z&enddt=2020-12-12T14:30:00Z"

# ical provides a data-uri which will download a properly formatted *.ics file (see 'Creating HTML links' section)
@cal.ical_url
#=> "data:text/calendar;charset=utf8,BEGIN:VCALENDAR%0AVERSION:2.0%0ABEGIN:VEVENT%0ADTSTART:20201212T133000Z%0ADTEND:20201212T143000Z%0ASUMMARY:Christmas%20party%21%0AUID:-20201212T133000Z-Christmas%20party%21%0AEND:VEVENT%0AEND:VCALENDAR"

# android_url, apple_url and outlook_url are simply helper methods that call ical_url and return the same string.

<!-- Simply pass the url into the href Eg. in ERB -->
<a href="<%= @cal.google_url %>">Add to Google Calendar</a>

<a href="<%= @cal.yahoo_url %>">Add to Yahoo Calendar</a>

<!-- for ical_url, android_url, apple_url and outlook_url you can set the filename like so -->
<a download="calendar-event.ics" href="<%= @cal.ical_url %>">Download iCal</a>

event_attributes = {
    start_datetime: Time.new(2020,12,12,9,00,00,0), # required
    end_datetime: Time.new(2020,12,12,17,00,00,0),
    title: "Ruby Conference", # required
    timezone: 'America/New_York', # required
    location: "20 W 34th St, New York, NY 10001", 
    url: "https://www.ruby-lang.org/en/",
    description: "Join us to learn all about Ruby.",
    add_url_to_description: true # defaults to true
}

cal = AddToCalendar::URLs.new(event_attributes)

• Offset values eg. "2020-05-13 15:31:00 +05:00" are ignored. It is only important that you have the correct date and time numbers set. The timezone is set directly using its own attribute timezone.
• You must set a timezone so that when users add the event to their calendar it shows at their correct local time.
  • Eg. London event @ 2020-05-13 13:30:00 will save in a New Yorker's calendar as local time 2020-05-13 17:30:00

• IE11 and lower will not work for ical_url, apple_url and outlook_url (IE does not properly support data-uri links. See #16).
• IE11 will also not work with Yahoo, but this is because Yahoo is deprecating IE 11 support and only offers a simplified interface which does not work with the add event URL.
• Office 365 and Outlook.com do not work on mobile. This seems to be an issue on Microsoft's side. Their mobile web interface does not support the 'create event' URLs and the links do not open the apps if you have them installed.

• Read the Wiki for more specific details

I couldn't find an approriate gem or javascript library that did exactly what I wanted. So I decided to scratch my own itch to solve a problem for a startup I'm working on: https://www.littlefutures.org

• https://rubygems.org/gems/add_to_calendar

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/jaredlt/add_to_calendar.

The gem is available as open source under the terms of the MIT License.