To get values from 2D array - mysql

Question

I have used this query to retrieve the dates for one particular user's approved leaves -
LeaveRequest.where(user_id: 6).where(status: 1).pluck(:from_date, :to_date)
and I'm getting this array as result -
[[Mon, 12 Sep 2016, Fri, 16 Sep 2016], [Tue, 06 Sep 2016, Tue, 06 Sep 2016], [Thu, 01 Sep 2016, Fri, 02 Sep 2016], [Tue, 30 Aug 2016, Wed, 31 Aug 2016]]
what I want is to fetch all the dates as well as the dates between 12 Sep 2016 and 16 Sep, 2016 (13th 14th and 15th).

Answer 1

I am assuming you mean something like this
require 'date'
#This is to simulate your current Array
current_array = 5.times.map {|n [Date.new(2016,n+1,1).<<(1),Date.new(2016,n+1,1)]}
#map the 2 dates to a Range
new_array = current_array.map{|start_date,end_date| (start_date..end_date)}
new_array.first.class
#=> Range
Calling to_a on the Range will blow it out into all the dates between start_date and end_date
With a rails you could do something like
class LeaveRequest
def self.user_requested_ranges(user_id, status_id)
scoped.
where(user_id: user_id, status: status_id).
pluck(:from_date, :to_date).
map do |from_date, to_date|
#optionally to output the full Array in each Range you could use
#(from_date..to_date).to_a
(from_date..to_date)
end
end
end
Then call as
LeaveRequest.user_requested_ranges(6,1)