Calendar: date_started until Date.current? - css

Question

How can we go from date_started until Date.current?
For example, this code only counts the date_started for a routine:
routines = current_user.routines.group_by {|i| i.date_started.to_date}
classes << "completed" if routines.include?(day)
But I'd like to make "completed", which is the CSS class that makes the td background blue, work like I explain below:
schema
create_table "routines", force: true do |t|
t.datetime "date_started"
t.string "action"
t.integer "user_id"
end
I had followed this tutorial to build the calendar.
FULL calendar_helper.rb
module CalendarHelper
def calendar(date = Date.current, &block)
Calendar.new(self, date, block).table
end
class Calendar < Struct.new(:view, :date, :callback)
HEADER = %w[Sun Mon Tue Wed Thu Fri Sat]
START_DAY = :sunday
delegate :content_tag, :current_user, to: :view
def past
end
def table
content_tag :table, class: "calendar" do
header + week_rows
end
end
def header
content_tag :tr do
HEADER.map { |day| content_tag :th, day }.join.html_safe
end
end
def week_rows
weeks.map do |week|
content_tag :tr do
week.map { |day| day_cell(day) }.join.html_safe
end
end.join.html_safe
end
def day_cell(day)
content_tag :td, view.capture(day, &callback), class: day_classes(day)
end
def day_classes(day)
classes = []
classes << "lastmonth" if day.month < date.month
classes << "nextmonth" if day.month > date.month
###
routines = current_user.routines.group_by {|i| i.date_started.to_date}
classes << "completed" if routines.include?(day)
###
classes.empty? ? nil : classes.join(" ")
end
def weeks
first = date.beginning_of_month.beginning_of_week(START_DAY)
last = date.end_of_month.end_of_week(START_DAY)
(first..last).to_a.in_groups_of(7)
end
end
end

Answer 1

If I'm understanding correctly why not just check if the given day in the calender falls within your specified range of dates?
controller:
#date_started = Date.today - 2.days
#today = Date.today
#given_date = Date.yesterday
html:
<td class="<%= 'completed' if #given_date >= #date_started and #given_date <= #today %>">
EDIT
I suppose #given_date will need to be an array so each day can be iterated in your HTML. It's not clear how to write that without seeing how you're rendering your calender. But the general idea should work.
EDIT2
The tutorial HTML is something like this:
<%= calender do |date| %>
<%= date.day %>
# assuming this is where you add your `completed` css class somehow
# check if date.day falls between the #date_started and #today range
<% end %>
EDIT3
Okay I see why this is confusing now. I think I understand though. You have have many routine objects and you want any date that falls between the routine.date_started and Date.today to be highlighted blue. I believe this will work for you:
def day_classes(day)
classes = []
classes << "lastmonth" if day.month < date.month
classes << "nextmonth" if day.month > date.month
###
routines = current_user.routines.group_by {|i| i.date_started.to_date}
# remove this line:
#classes << "completed" if routines.include?(day)
# in favor of this line:
classes << "completed" if routines.any? {|date_attr, routine_obj| day >= date_attr and day <= Date.today }
###
classes.empty? ? nil : classes.join(" ")
end