ActiveRecord Find By Year, Day or Month on a Date field

Question

I have an ActiveRecord model that has a date attribute. Is it possible to utilize that date attribute to find by Year, Day and Month:

Model.find_by_year(201         


        

Answer 1

In your Model:

scope :by_year, lambda { |year| where('extract(year from created_at) = ?', year) }

In your Controller:

@courses = Course.by_year(params[:year])

Answer 2

Another short scope as below:

  class Leave
    scope :by_year, -> (year) {
      where(date:
                Date.new(year).beginning_of_year..Date.new(year).end_of_year)
    }
  end

Call the scope:

Leave.by_year(2020)

Answer 3

If you're looking for just the date, simply do:

Model.where(date: Date.today.beginning_of_day..Date.today.end_of_day)

Answer 4

Simple Implementation for Just The Year

app/models/your_model.rb

scope :created_in, ->( year ) { where( "YEAR( created_at ) = ?", year ) }

Usage

Model.created_in( 1984 )

Answer 5

Try this:

Model.where("MONTH(date_column) = ? and DAY(date_column) = ?", DateTime.now.month, DateTime.now.day)

Answer 6

I usually use:

Model.where('extract(month from birthday_column) = ? and extract(day from birthday_column) = ?', Time.now.month, Time.now.day)