Module: ActiveScaffold::Finder::ClassMethods

Defined in:
lib/active_scaffold/finder.rb

Instance Method Summary collapse

Instance Method Details

#condition_for_column(column, value, text_search = :full) ⇒ Object

Generates an SQL condition for the given ActiveScaffold column based on that column’s database type (or form_ui … for virtual columns?). TODO: this should reside on the column, not the controller



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/active_scaffold/finder.rb', line 39

def condition_for_column(column, value, text_search = :full)
  like_pattern = like_pattern(text_search)
  if self.respond_to?("condition_for_#{column.name}_column")
    return self.send("condition_for_#{column.name}_column", column, value, like_pattern)
  end
  return unless column and column.search_sql and not value.blank?
  search_ui = column.search_ui || column.column.try(:type)
  begin
    sql, *values = if search_ui && self.respond_to?("condition_for_#{search_ui}_type")
      self.send("condition_for_#{search_ui}_type", column, value, like_pattern)
    else
      if column.search_sql.instance_of? Proc
        column.search_sql.call(value)
      else
        case search_ui
        when :boolean, :checkbox
          ["%{search_sql} = ?", column.column ? column.column.type_cast(value) : value]
        when :integer, :decimal, :float
          condition_for_numeric(column, value)
        when :string, :range
          condition_for_range(column, value, like_pattern)
        when :date, :time, :datetime, :timestamp
          condition_for_datetime(column, value)
        when :select, :multi_select, :country, :usa_state, :chosen, :multi_chosen
          ["%{search_sql} in (?)", Array(value)]
        else
          if column.column.nil? || column.column.text?
            ["%{search_sql} #{ActiveScaffold::Finder.like_operator} ?", like_pattern.sub('?', value)]
          else
            ["%{search_sql} = ?", column.column.type_cast(value)]
          end
        end
      end
    end
    return nil unless sql

    conditions = [column.search_sql.collect { |search_sql| sql % {:search_sql => search_sql} }.join(' OR ')]
    conditions += values*column.search_sql.size if values.present?
    conditions
  rescue Exception => e
    logger.error Time.now.to_s + "#{e.inspect} -- on the ActiveScaffold column :#{column.name}, search_ui = #{search_ui} in #{self.name}"
    raise e
  end
end

#condition_for_datetime(column, value, like_pattern = nil) ⇒ Object 



196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
 
# File 'lib/active_scaffold/finder.rb', line 196

def condition_for_datetime(column, value, like_pattern = nil)
  conversion = datetime_conversion_for_condition(column)
  from_value = condition_value_for_datetime(column, value[:from], conversion)
  to_value = condition_value_for_datetime(column, value[:to], conversion)

  if from_value.nil? and to_value.nil?
    nil
  elsif !from_value
    ["%{search_sql} <= ?", to_value.to_s(:db)]
  elsif !to_value
    ["%{search_sql} >= ?", from_value.to_s(:db)]
  else
    ["%{search_sql} BETWEEN ? AND ?", from_value.to_s(:db), to_value.to_s(:db)]
  end
end

#condition_for_null_type(column, value, like_pattern = nil) ⇒ Object 



220
221
222
223
224
225
226
227
228
229
 
# File 'lib/active_scaffold/finder.rb', line 220

def condition_for_null_type(column, value, like_pattern = nil)
  case value.to_sym
  when :null
    ["%{search_sql} is null", []]
  when :not_null
    ["%{search_sql} is not null", []]
  else
    nil
  end
end

#condition_for_numeric(column, value) ⇒ Object 



84
85
86
87
88
89
90
91
92
93
94
95
96
 
# File 'lib/active_scaffold/finder.rb', line 84

def condition_for_numeric(column, value)
  if !value.is_a?(Hash)
    ["%{search_sql} = ?", condition_value_for_numeric(column, value)]
  elsif ActiveScaffold::Finder::NullComparators.include?(value[:opt])
    condition_for_null_type(column, value[:opt])
  elsif value[:from].blank? or not ActiveScaffold::Finder::NumericComparators.include?(value[:opt])
    nil
  elsif value[:opt] == 'BETWEEN'
    ["(%{search_sql} BETWEEN ? AND ?)", condition_value_for_numeric(column, value[:from]), condition_value_for_numeric(column, value[:to])]
  else
    ["%{search_sql} #{value[:opt]} ?", condition_value_for_numeric(column, value[:from])]
  end
end

#condition_for_range(column, value, like_pattern = nil) ⇒ Object 



98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/active_scaffold/finder.rb', line 98

def condition_for_range(column, value, like_pattern = nil)
  if !value.is_a?(Hash)
    if column.column.nil? || column.column.text?
      ["%{search_sql} #{ActiveScaffold::Finder.like_operator} ?", like_pattern.sub('?', value)]
    else
      ["%{search_sql} = ?", column.column.type_cast(value)]
    end
  elsif ActiveScaffold::Finder::NullComparators.include?(value[:opt])
    condition_for_null_type(column, value[:opt], like_pattern)
  elsif value[:from].blank?
    nil
  elsif ActiveScaffold::Finder::StringComparators.values.include?(value[:opt])
    ["%{search_sql} #{ActiveScaffold::Finder.like_operator} ?", value[:opt].sub('?', value[:from])]
  elsif value[:opt] == 'BETWEEN'
    ["(%{search_sql} BETWEEN ? AND ?)", value[:from], value[:to]]
  elsif ActiveScaffold::Finder::NumericComparators.include?(value[:opt])
    ["%{search_sql} #{value[:opt]} ?", value[:from]]
  else
    nil
  end
end

#condition_for_record_select_type(column, value, like_pattern = nil) ⇒ Object 



212
213
214
215
216
217
218
 
# File 'lib/active_scaffold/finder.rb', line 212

def condition_for_record_select_type(column, value, like_pattern = nil)
  if value.is_a?(Array)
    ["%{search_sql} IN (?)", value]
  else
    ["%{search_sql} = ?", value]
  end
end

#condition_value_for_datetime(column, value, conversion = :to_time) ⇒ Object 



136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
 
# File 'lib/active_scaffold/finder.rb', line 136

def condition_value_for_datetime(column, value, conversion = :to_time)
  if value.is_a? Hash
    Time.zone.local(*[:year, :month, :day, :hour, :minute, :second].collect {|part| value[part].to_i}) rescue nil
  elsif value.respond_to?(:strftime)
    if conversion == :to_time
      # Explicitly get the current zone, because TimeWithZone#to_time in rails 3.2.3 returns UTC.
      # https://github.com/rails/rails/pull/2453
      value.to_time.in_time_zone
    else
      value.send(conversion)
    end
  elsif conversion == :to_date
    Date.strptime(value, I18n.t("date.formats.#{column.options[:format] || :default}")) rescue nil
  else
    parts = Date._parse(value)
    format = I18n.translate "time.formats.#{column.options[:format] || :picker}", :default => '' if ActiveScaffold.js_framework == :jquery
    if format.blank?
      time_parts = [[:hour, '%H'], [:min, '%M'], [:sec, '%S']].collect {|part, format_part| format_part if parts[part].present?}.compact
      format = "#{I18n.t('date.formats.default')} #{time_parts.join(':')} #{'%z' if parts[:offset].present?}"
    else
      if parts[:hour]
        [[:min, '%M'], [:sec, '%S']].each {|part, f| format.gsub!(":#{f}", '') unless parts[part].present?}
      else
        value += ' 00:00:00'
      end
      format += ' %z' if parts[:offset].present? && format !~ /%z/i
    end
    if !parts[:year] && !parts[:month] && !parts[:mday]
      value = "#{Date.today.strftime(format.gsub(/%[HI].*/, ''))} #{value}"
    end
    value = translate_days_and_months(value, format) if I18n.locale != :en
    time = DateTime.strptime(value, format) rescue nil
    if time
      time = Time.zone.local_to_utc(time).in_time_zone unless parts[:offset]
      time = time.send(conversion) unless conversion == :to_time
    end
    time
  end unless value.nil? || value.blank?
end

#condition_value_for_numeric(column, value) ⇒ Object 



176
177
178
179
180
181
182
183
184
185
186
 
# File 'lib/active_scaffold/finder.rb', line 176

def condition_value_for_numeric(column, value)
  return value if value.nil?
  value = column.number_to_native(value) if column.options[:format] && column.search_ui != :number
  case (column.search_ui || column.column.type)
  when :integer   then value.to_i rescue value ? 1 : 0
  when :float     then value.to_f
  when :decimal   then ActiveRecord::ConnectionAdapters::Column.value_to_decimal(value)
  else
    value
  end
end

#create_conditions_for_columns(tokens, columns, text_search = :full) ⇒ Object

Takes a collection of search terms (the tokens) and creates SQL that searches all specified ActiveScaffold columns. A row will match if each token is found in at least one of the columns.



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/active_scaffold/finder.rb', line 11

def create_conditions_for_columns(tokens, columns, text_search = :full)
  # if there aren't any columns, then just return a nil condition
  return unless columns.length > 0
  like_pattern = like_pattern(text_search)

  tokens = [tokens] if tokens.is_a? String

  where_clauses = []
  columns.each do |column|
    Array(column.search_sql).each do |search_sql|
      where_clauses << "#{search_sql} #{(column.column.nil? || column.column.text?) ? ActiveScaffold::Finder.like_operator : '='} ?"
    end
  end
  phrase = where_clauses.join(' OR ')

  tokens.collect do |value|
    columns.inject([phrase]) do |condition, column|
      Array(column.search_sql).size.times do
        condition.push((column.column.nil? || column.column.text?) ? like_pattern.sub('?', value) : column.column.type_cast(value))
      end
      condition
    end
  end
end

#datetime_conversion_for_condition(column) ⇒ Object 



188
189
190
191
192
193
194
 
# File 'lib/active_scaffold/finder.rb', line 188

def datetime_conversion_for_condition(column)
  if column.column
    column.column.type == :date ? :to_date : :to_time
  else
    :to_time
  end
end

#like_pattern(text_search) ⇒ Object 



231
232
233
234
235
236
237
238
 
# File 'lib/active_scaffold/finder.rb', line 231

def like_pattern(text_search)
  case text_search
    when :full then '%?%'
    when :start then '?%'
    when :end then '%?'
    else '?'
  end
end

#translate_days_and_months(value, format) ⇒ Object 



120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
 
# File 'lib/active_scaffold/finder.rb', line 120

def translate_days_and_months(value, format)
  keys = {
    '%A' => 'date.day_names',
    '%a' => 'date.abbr_day_names',
    '%B' => 'date.month_names',
    '%b' => 'date.abbr_month_names'
  }
  keys.each do |f, k|
    if format.include? f
      table = Hash[I18n.t(k).compact.zip(I18n.t(k, :locale => :en).compact)]
      value.gsub!(Regexp.union(table.keys)) { |s| table[s] }
    end
  end
  value
end