Date calcs and beyond

Rails
1

I am starting to get into a situation where I am going to have to get
totals for the past 12 months and have started playing with code. Here
is where I am at:

def self.tm_beg
Time.now.beginning_of_month
end

def tm_end
Time.now.end_of_month
end

def tm_beg_less_1
tm_beg.last_month.beginning_of_month
end

def tm_end_less_1
tm_end.last_month.end_of_month
end

and so on to tm_beg_less_11/tm_end_less_11

My intention is to use it something like this in the personnel.rb
model…
@clinical_supervisions_tm = ClinicalReview.find(:all,
:conditions => [“personnel_id = ? AND
supv_date BETWEEN tm_beg … tm_end”, self.id])
NOTE: don’t worry about syntax because I will use ez-where to handle the
search

This seems to work fine in console so my questions are:

  • Am I missing a plugin that does this for me? (the date math for 12
    months)

  • If I put these calcs in lib/t_calcs.rb or application.rb or
    application_helper.rb, it seems not to matter because I am going to have
    to call it via Class anyway, is there a preferred way?

  • Does someone have the whole enchilada calendar utilities/engine that
    will make me stop hating date/time calcs (not that I don’t love the
    utility that rails gives me for free)?

Thanks

Craig