Rails Activesupport Date Calculations

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ActiveSupport::Duration - Ruby on Rails

    https://api.rubyonrails.org/classes/ActiveSupport/Duration.html
    Provides accurate date and time measurements using Date#advance and Time#advance, respectively. It mainly supports the methods on Numeric. 1.month.ago # equivalent to Time.now.

Module: ActiveSupport::CoreExtensions::Date::Calculations

    https://api.rubyonrails.org/v2.3/classes/ActiveSupport/CoreExtensions/Date/Calculations.html
    Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00) and then subtracts the specified number of seconds

Module: ActiveSupport::CoreExtensions::DateTime::Calculations

    https://api.rubyonrails.org/v2.3/classes/ActiveSupport/CoreExtensions/DateTime/Calculations.html
    Returns a new DateTime where one or more of the elements have been changed according to the options parameter. The time options (hour, minute, sec) reset cascadingly, so if only the hour is passed, then minute and sec is set to 0.

beginning_of_day (ActiveSupport::CoreExtensions::Date ...

    https://apidock.com/rails/ActiveSupport/CoreExtensions/Date/Calculations/beginning_of_day
    Time#beginning_of_day beginning_of_day () public Converts Date to a Time (or DateTime if necessary) with the time portion set to the beginning of the day (0:00)

beginning_of_year (ActiveSupport::CoreExtensions::Date ...

    https://apidock.com/rails/ActiveSupport/CoreExtensions/Date/Calculations/beginning_of_year
    beginning_of_year() public Returns a new Date/DateTime representing the start of the year (1st of january; DateTime objects will have time set to 0:00) Show source

DateAndTime::Calculations - Ruby on Rails

    https://api.rubyonrails.org/classes/DateAndTime/Calculations.html
    Returns a new date/time representing the given day in the next week. today = Date.today # => Thu, 07 May 2015 today.next_week # => Mon, 11 May 2015

Working with dates on Ruby on Rails - Nando Vieira

    https://nandovieira.com/working-with-dates-on-ruby-on-rails
    Working with dates on Ruby on Rails. By Nando Vieira. December 09, 2015 . Read in 8 minutes. Working with dates can be hard. You need to consider time zones, understand how to store dates in your database, parse strings into dates or even format dates and display them to the user.

ruby on rails - Calculate difference in days ActiveSupport ...

    https://stackoverflow.com/questions/3049941/calculate-difference-in-days-activesupporttimewithzone-in-the-most-rubyish-st
    (Time.zone.now.to_date - myActiveRecord.visit_date.to_date).to_i This will work with inputs in Time or DateTime due to the conversion. Another possible solution would be to first call beginning_of_day on each of the Times or DateTimes but in my case, the minutes were important.

Date

    https://api.rubyonrails.org/classes/Date.html
    Returns the week start (e.g. :monday) for the current request, if this has been set (via Date.beginning_of_week=).If Date.beginning_of_week has not been set for the current request, returns the week start specified in config.beginning_of_week.If no config.beginning_of_week was specified, returns :monday.

ruby on rails - convert string to ActiveSupport::Duration ...

    https://stackoverflow.com/questions/34506174/convert-string-to-activesupportduration
    In Rails month or 'months' are Integer methods.. So when you use: 1.month You are applying Integer#month to 1 (which is an integer).. However '1.month' is just a string. You can write anything between quotes and they are treated a String and not evaluated in any way unless you specifically ask for it.



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