app/models/search_form.rb

   1 # 検索条件を格納する
   2 # 例: @search = SearchForm.new(params[:search])
   3
   4 class SearchForm < ActiveForm
   5   VALID_NAME = /^[a-zA-Z_][a-zA-Z0-9_]*$/
   6   include ActiveRecord::Validations
   7   def validate
   8     super
   9     # from <= to etc...
  10     attributes.each do | name, value |
  11       value.blank? and next
  12       if (m = name.match(/_from$/))
  13         prefix = m.pre_match
  14         name_to = prefix+'_to'
  15         from = value
  16         to = send(name_to)
  17         next if to.blank?
  18         # 数字だけの場合数値として比較
  19         unless [from, to].any?{|v| v =~ /\D/} # 数字以外が含まれていない
  20           from = from.strftime("%Y%m%d%H%M%S").to_i
  21           to = to.strftime("%Y%m%d%H%M%S").to_i
  22         end
  23         unless from <= to
  24           errors.add name, 'の範囲指定が不正です。'
  25           errors.add name_to, 'の範囲指定が不正です。'
  26         end
  27       end
  28     end
  29   end
  30
  31   # ActiveForm からコピペして改造
  32   def attributes
  33     attributes = instance_variables
  34     attributes.delete("@errors")
  35     attributes.inject({}) do |hash, attribute|
  36       hash[attribute[1..-1]] = instance_variable_get(attribute)
  37       hash
  38     end
  39   end
  40
  41   def attributes=(hash)
  42     hash.each do | key, value |
  43       next if value.nil? || value == ''
  44       # datetime
  45       name = key.to_s
  46       if (m = name.match(/\((\d)i\)$/))
  47         next if m[1] != '1'
  48         name = m.pre_match
  49         if (date = parse_date_select(hash, name))
  50           send(name+'=', date)
  51         end
  52       elsif value.is_a?(String) &&
  53           value =~ /^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}/
  54         # 日時に見える文字列は Date に
  55         send(name+'=', Time.zone.parse(value))
  56       else
  57         send(name+'=', value)
  58       end
  59     end if hash
  60   end
  61
  62   def method_missing(key, *args)
  63     begin
  64       super
  65     rescue NoMethodError
  66       name = key.to_s
  67       if name.size >= 2 && name[-1] == ?= # name =~ /^.+=$/
  68         # set
  69         name = name[0, name.size-1]
  70         value = args.first
  71         instance_variable_set('@'+name, value) if name =~ VALID_NAME
  72       else
  73         # get
  74         instance_variable_get('@'+name) if name =~ VALID_NAME
  75       end
  76     end
  77   end
  78
  79   private
  80
  81   def parse_date_select(params, name)
  82     arr = (1..6).map do |i|
  83       params["%s(%di)" % [name, i]]
  84     end
  85     if arr.join.blank?
  86       return
  87     end
  88     year,month,day,hour,min,sec = arr
  89
  90     selected_date = false
  91     selected_time = false
  92
  93     if year || month || day
  94       selected_date = true
  95     end
  96
  97     if hour || min || sec
  98       selected_time = true
  99     end
 100
 101     now = DateTime.now
 102     if selected_date
 103       if year.blank?
 104         year = now.year.to_s
 105       end
 106       if month.blank?
 107         if ! day.blank?
 108           month = now.month.to_s
 109         elsif year
 110           month = "1"
 111         else
 112           month = now.month.to_s
 113         end
 114       end
 115       if day.blank?
 116         if year || month
 117           day = "1"
 118         else
 119           day = now.day.to_s
 120         end
 121       end
 122     end
 123
 124     if selected_time
 125       if hour.blank?
 126         hour = "00"
 127       end
 128       if min.blank?
 129         if hour
 130           min = "00"
 131         else
 132           min = now.min.to_s
 133         end
 134       end
 135       if sec.blank?
 136         if hour || min
 137           sec = "00"
 138         else
 139           sec = now.sec.to_s
 140         end
 141       end
 142     end
 143     if selected_time
 144       Time.zone.local(year.to_i,month.to_i,day.to_i,hour.to_i,min.to_i,sec.to_i)
 145     else
 146       Time.zone.local(year.to_i,month.to_i,day.to_i)
 147     end
 148   end
 149
 150   ## from ActiveHeart
 151
 152   class << self
 153     def set_field_names(field_names = {})
 154       @field_names = HashWithIndifferentAccess.new unless @field_names
 155       @field_names.update(field_names)
 156     end
 157
 158     alias_method :_human_attribute_name, :human_attribute_name
 159     def human_attribute_name(attribute_key_name)
 160       if @field_names && @field_names[attribute_key_name]
 161         @field_names[attribute_key_name]
 162       else
 163         _human_attribute_name(attribute_key_name)
 164       end
 165     end
 166
 167     def field_names
 168       @field_names
 169     end
 170
 171     def self_and_descendants_from_active_record
 172       [self]
 173     end
 174
 175     def human_name(*args)
 176       name.humanize
 177     end
 178   end
 179
 180 end