Attic Changeset 46, docs

docs

by chrisk, 25 Jun, 2007 09:55 AM

25	46
exercisetracker/trunk/app/controllers/application.rb diff
1	1	# Filters added to this controller apply to all controllers in the application.
2	2	# Likewise, all the methods added will be available for all controllers.
3
4	3	class ApplicationController < ActionController::Base
5	4	helper :all # include all helpers, all the time
6	5	end
7	6
	7
	8
	9
	10	# Extend built-in arrays with some useful math functions.
8	11	class Array
	12	# Extends Array. The sum works using the + operator, so it should works for objects like strings, too.
9	13	def sum
10	14	inject(0) { \|sum, x\| sum + x }
11	15	end
	16
	17	# Extends Array. This relies on the sum method and Array#size. If the array is empty, returns 0.
12	18	def mean
13	19	(size > 0) ? sum.to_f / size : 0
14	20	end

39	46
exercisetracker/trunk/app/models/exercise.rb diff
	1	# An exercise is the instantiation of an activity. We might otherwise call this a "set",
	2	# except that this is a reserved word in Rails. A workout consists of multiple exercises/sets.
1	3	class Exercise < ActiveRecord::Base
2	4	belongs_to :activity
3	5
---	---
10	12	end
11	13
12	14
	15	# Accessor to retrieve created_at in a human-readable format.
13	16	def created_at_string
14	17	created_at.to_s(:long)
15	18	rescue ArgumentError
16	19	Time.now.to_s(:long)
17	20	end
18	21
	22	# Accessor to set created_at using a human-readable string, entered by the user. This falls back
	23	# on <tt>Time.parse</tt>. If <tt>Time.parse</tt> cannot convert the string to a Time object, validation fails.
19	24	def created_at_string=(value)
20	25	self.created_at = Time.parse(value)
21	26	rescue ArgumentError
22	27	@created_at_invalid = true
23	28	end
24	29
25		def validate
26		errors.add(:created_at, 'is invalid') if @created_at_invalid
27		end
28
	30	# Calculate the total weight lifted during this exercise, for exercises that
	31	# use reps and weight. If the exercise does not fit this description, it returns 0.
29	32	def total_weight
30	33	if activity.use_reps? && activity.use_weight?
31	34	reps * weight * ((activity.double_weight?) ? 2 : 1)
---	---
33	36	0
34	37	end
35	38	end
	39
	40
	41
	42
	43	protected
	44
	45	def validate #:nodoc:
	46	errors.add(:created_at, 'is invalid') if @created_at_invalid
	47	end
	48
36	49	end

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