jro_apps/redmine Commit - r10742:093ecdfc730f

Fixed syntax for ruby1.8....

Jean-Philippe Lang -

r10742:093ecdfc730f

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r10742:093ecdfc730f

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app/models/query.rb +1 -1

              # Redmine - project management software
              # Copyright (C) 2006-2012  Jean-Philippe Lang
              #
              # This program is free software; you can redistribute it and/or
              # modify it under the terms of the GNU General Public License
              # as published by the Free Software Foundation; either version 2
              # of the License, or (at your option) any later version.
              #
              # This program is distributed in the hope that it will be useful,
              # but WITHOUT ANY WARRANTY; without even the implied warranty of
              # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
              # GNU General Public License for more details.
              #
              # You should have received a copy of the GNU General Public License
              # along with this program; if not, write to the Free Software
              # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
              class QueryColumn
                attr_accessor :name, :sortable, :groupable, :default_order
                include Redmine::I18n
                def initialize(name, options={})
                  self.name = name
                  self.sortable = options[:sortable]
                  self.groupable = options[:groupable] || false
                  if groupable == true
                    self.groupable = name.to_s
                  end
                  self.default_order = options[:default_order]
                  @inline = options.key?(:inline) ? options[:inline] : true
                  @caption_key = options[:caption] || "field_#{name}"
                end
                def caption
                  l(@caption_key)
                end
                # Returns true if the column is sortable, otherwise false
                def sortable?
                  !@sortable.nil?
                end
                def sortable
                  @sortable.is_a?(Proc) ? @sortable.call : @sortable
                end
                def inline?
                  @inline
                end
                def value(object)
                  object.send name
                end
                def css_classes
                  name
                end
              end
              class QueryCustomFieldColumn < QueryColumn
                def initialize(custom_field)
                  self.name = "cf_#{custom_field.id}".to_sym
                  self.sortable = custom_field.order_statement || false
                  self.groupable = custom_field.group_statement || false
                  @inline = true
                  @cf = custom_field
                end
                def caption
                  @cf.name
                end
                def custom_field
                  @cf
                end
                def value(object)
                  cv = object.custom_values.select {|v| v.custom_field_id == @cf.id}.collect {|v| @cf.cast_value(v.value)}
                  cv.size > 1 ? cv.sort {|a,b| a.to_s <=> b.to_s} : cv.first
                end
                def css_classes
                  @css_classes ||= "#{name} #{@cf.field_format}"
                end
              end
              class Query < ActiveRecord::Base
                class StatementInvalid < ::ActiveRecord::StatementInvalid
                end
                belongs_to :project
                belongs_to :user
                serialize :filters
                serialize :column_names
                serialize :sort_criteria, Array
                attr_protected :project_id, :user_id
                validates_presence_of :name
                validates_length_of :name, :maximum => 255
                validate :validate_query_filters
                class_attribute :operators
                self.operators = {
                  "="   => :label_equals,
                  "!"   => :label_not_equals,
                  "o"   => :label_open_issues,
                  "c"   => :label_closed_issues,
                  "!*"  => :label_none,
                  "*"   => :label_any,
                  ">="  => :label_greater_or_equal,
                  "<="  => :label_less_or_equal,
                  "><"  => :label_between,
                  "<t+" => :label_in_less_than,
                  ">t+" => :label_in_more_than,
                  "><t+"=> :label_in_the_next_days,
                  "t+"  => :label_in,
                  "t"   => :label_today,
                  "ld"  => :label_yesterday,
                  "w"   => :label_this_week,
                  "lw"  => :label_last_week,
-                 "l2w" => [:label_last_n_weeks, :count => 2],
+                 "l2w" => [:label_last_n_weeks, {:count => 2}],
                  "m"   => :label_this_month,
                  "lm"  => :label_last_month,
                  "y"   => :label_this_year,
                  ">t-" => :label_less_than_ago,
                  "<t-" => :label_more_than_ago,
                  "><t-"=> :label_in_the_past_days,
                  "t-"  => :label_ago,
                  "~"   => :label_contains,
                  "!~"  => :label_not_contains,
                  "=p"  => :label_any_issues_in_project,
                  "=!p" => :label_any_issues_not_in_project,
                  "!p"  => :label_no_issues_in_project
                }
                class_attribute :operators_by_filter_type
                self.operators_by_filter_type = {
                  :list => [ "=", "!" ],
                  :list_status => [ "o", "=", "!", "c", "*" ],
                  :list_optional => [ "=", "!", "!*", "*" ],
                  :list_subprojects => [ "*", "!*", "=" ],
                  :date => [ "=", ">=", "<=", "><", "<t+", ">t+", "><t+", "t+", "t", "ld", "w", "lw", "l2w", "m", "lm", "y", ">t-", "<t-", "><t-", "t-", "!*", "*" ],
                  :date_past => [ "=", ">=", "<=", "><", ">t-", "<t-", "><t-", "t-", "t", "ld", "w", "lw", "l2w", "m", "lm", "y", "!*", "*" ],
                  :string => [ "=", "~", "!", "!~", "!*", "*" ],
                  :text => [  "~", "!~", "!*", "*" ],
                  :integer => [ "=", ">=", "<=", "><", "!*", "*" ],
                  :float => [ "=", ">=", "<=", "><", "!*", "*" ],
                  :relation => ["=", "=p", "=!p", "!p", "!*", "*"]
                }
                class_attribute :available_columns
                self.available_columns = []
                class_attribute :queried_class
                def queried_table_name
                  @queried_table_name ||= self.class.queried_class.table_name
                end
                def initialize(attributes=nil, *args)
                  super attributes
                  @is_for_all = project.nil?
                end
                # Builds the query from the given params
                def build_from_params(params)
                  if params[:fields] || params[:f]
                    self.filters = {}
                    add_filters(params[:fields] || params[:f], params[:operators] || params[:op], params[:values] || params[:v])
                  else
                    available_filters.keys.each do |field|
                      add_short_filter(field, params[field]) if params[field]
                    end
                  end
                  self.group_by = params[:group_by] || (params[:query] && params[:query][:group_by])
                  self.column_names = params[:c] || (params[:query] && params[:query][:column_names])
                  self
                end
                # Builds a new query from the given params and attributes
                def self.build_from_params(params, attributes={})
                  new(attributes).build_from_params(params)
                end
                def validate_query_filters
                  filters.each_key do |field|
                    if values_for(field)
                      case type_for(field)
                      when :integer
                        add_filter_error(field, :invalid) if values_for(field).detect {|v| v.present? && !v.match(/^[+-]?\d+$/) }
                      when :float
                        add_filter_error(field, :invalid) if values_for(field).detect {|v| v.present? && !v.match(/^[+-]?\d+(\.\d*)?$/) }
                      when :date, :date_past
                        case operator_for(field)
                        when "=", ">=", "<=", "><"
                          add_filter_error(field, :invalid) if values_for(field).detect {|v| v.present? && (!v.match(/^\d{4}-\d{2}-\d{2}$/) || (Date.parse(v) rescue nil).nil?) }
                        when ">t-", "<t-", "t-", ">t+", "<t+", "t+", "><t+", "><t-"
                          add_filter_error(field, :invalid) if values_for(field).detect {|v| v.present? && !v.match(/^\d+$/) }
                        end
                      end
                    end
                    add_filter_error(field, :blank) unless
                        # filter requires one or more values
                        (values_for(field) and !values_for(field).first.blank?) or
                        # filter doesn't require any value
                        ["o", "c", "!*", "*", "t", "ld", "w", "lw", "l2w", "m", "lm", "y"].include? operator_for(field)
                  end if filters
                end
                def add_filter_error(field, message)
                  m = label_for(field) + " " + l(message, :scope => 'activerecord.errors.messages')
                  errors.add(:base, m)
                end
                def editable_by?(user)
                  return false unless user
                  # Admin can edit them all and regular users can edit their private queries
                  return true if user.admin? || (!is_public && self.user_id == user.id)
                  # Members can not edit public queries that are for all project (only admin is allowed to)
                  is_public && !@is_for_all && user.allowed_to?(:manage_public_queries, project)
                end
                def trackers
                  @trackers ||= project.nil? ? Tracker.sorted.all : project.rolled_up_trackers
                end
                # Returns a hash of localized labels for all filter operators
                def self.operators_labels
                  operators.inject({}) {|h, operator| h[operator.first] = l(*operator.last); h}
                end
                # Returns a representation of the available filters for JSON serialization
                def available_filters_as_json
                  json = {}
                  available_filters.each do |field, options|
                    json[field] = options.slice(:type, :name, :values).stringify_keys
                  end
                  json
                end
                def all_projects
                  @all_projects ||= Project.visible.all
                end
                def all_projects_values
                  return @all_projects_values if @all_projects_values
                  values = []
                  Project.project_tree(all_projects) do |p, level|
                    prefix = (level > 0 ? ('--' * level + ' ') : '')
                    values << ["#{prefix}#{p.name}", p.id.to_s]
                  end
                  @all_projects_values = values
                end
                def add_filter(field, operator, values=nil)
                  # values must be an array
                  return unless values.nil? || values.is_a?(Array)
                  # check if field is defined as an available filter
                  if available_filters.has_key? field
                    filter_options = available_filters[field]
                    filters[field] = {:operator => operator, :values => (values || [''])}
                  end
                end
                def add_short_filter(field, expression)
                  return unless expression && available_filters.has_key?(field)
                  field_type = available_filters[field][:type]
                  operators_by_filter_type[field_type].sort.reverse.detect do |operator|
                    next unless expression =~ /^#{Regexp.escape(operator)}(.*)$/
                    add_filter field, operator, $1.present? ? $1.split('|') : ['']
                  end || add_filter(field, '=', expression.split('|'))
                end
                # Add multiple filters using +add_filter+
                def add_filters(fields, operators, values)
                  if fields.is_a?(Array) && operators.is_a?(Hash) && (values.nil? || values.is_a?(Hash))
                    fields.each do |field|
                      add_filter(field, operators[field], values && values[field])
                    end
                  end
                end
                def has_filter?(field)
                  filters and filters[field]
                end
                def type_for(field)
                  available_filters[field][:type] if available_filters.has_key?(field)
                end
                def operator_for(field)
                  has_filter?(field) ? filters[field][:operator] : nil
                end
                def values_for(field)
                  has_filter?(field) ? filters[field][:values] : nil
                end
                def value_for(field, index=0)
                  (values_for(field) || [])[index]
                end
                def label_for(field)
                  label = available_filters[field][:name] if available_filters.has_key?(field)
                  label ||= l("field_#{field.to_s.gsub(/_id$/, '')}", :default => field)
                end
                def self.add_available_column(column)
                  self.available_columns << (column) if column.is_a?(QueryColumn)
                end
                # Returns an array of columns that can be used to group the results
                def groupable_columns
                  available_columns.select {|c| c.groupable}
                end
                # Returns a Hash of columns and the key for sorting
                def sortable_columns
                  available_columns.inject({}) {|h, column|
                    h[column.name.to_s] = column.sortable
                    h
                  }
                end
                def columns
                  # preserve the column_names order
                  (has_default_columns? ? default_columns_names : column_names).collect do |name|
                     available_columns.find { |col| col.name == name }
                  end.compact
                end
                def inline_columns
                  columns.select(&:inline?)
                end
                def block_columns
                  columns.reject(&:inline?)
                end
                def available_inline_columns
                  available_columns.select(&:inline?)
                end
                def available_block_columns
                  available_columns.reject(&:inline?)
                end
                def default_columns_names
                  []
                end
                def column_names=(names)
                  if names
                    names = names.select {|n| n.is_a?(Symbol) || !n.blank? }
                    names = names.collect {|n| n.is_a?(Symbol) ? n : n.to_sym }
                    # Set column_names to nil if default columns
                    if names == default_columns_names
                      names = nil
                    end
                  end
                  write_attribute(:column_names, names)
                end
                def has_column?(column)
                  column_names && column_names.include?(column.is_a?(QueryColumn) ? column.name : column)
                end
                def has_default_columns?
                  column_names.nil? || column_names.empty?
                end
                def sort_criteria=(arg)
                  c = []
                  if arg.is_a?(Hash)
                    arg = arg.keys.sort.collect {|k| arg[k]}
                  end
                  c = arg.select {|k,o| !k.to_s.blank?}.slice(0,3).collect {|k,o| [k.to_s, (o == 'desc' || o == false) ? 'desc' : 'asc']}
                  write_attribute(:sort_criteria, c)
                end
                def sort_criteria
                  read_attribute(:sort_criteria) || []
                end
                def sort_criteria_key(arg)
                  sort_criteria && sort_criteria[arg] && sort_criteria[arg].first
                end
                def sort_criteria_order(arg)
                  sort_criteria && sort_criteria[arg] && sort_criteria[arg].last
                end
                def sort_criteria_order_for(key)
                  sort_criteria.detect {|k, order| key.to_s == k}.try(:last)
                end
                # Returns the SQL sort order that should be prepended for grouping
                def group_by_sort_order
                  if grouped? && (column = group_by_column)
                    order = sort_criteria_order_for(column.name) || column.default_order
                    column.sortable.is_a?(Array) ?
                      column.sortable.collect {|s| "#{s} #{order}"}.join(',') :
                      "#{column.sortable} #{order}"
                  end
                end
                # Returns true if the query is a grouped query
                def grouped?
                  !group_by_column.nil?
                end
                def group_by_column
                  groupable_columns.detect {|c| c.groupable && c.name.to_s == group_by}
                end
                def group_by_statement
                  group_by_column.try(:groupable)
                end
                def project_statement
                  project_clauses = []
                  if project && !project.descendants.active.empty?
                    ids = [project.id]
                    if has_filter?("subproject_id")
                      case operator_for("subproject_id")
                      when '='
                        # include the selected subprojects
                        ids += values_for("subproject_id").each(&:to_i)
                      when '!*'
                        # main project only
                      else
                        # all subprojects
                        ids += project.descendants.collect(&:id)
                      end
                    elsif Setting.display_subprojects_issues?
                      ids += project.descendants.collect(&:id)
                    end
                    project_clauses << "#{Project.table_name}.id IN (%s)" % ids.join(',')
                  elsif project
                    project_clauses << "#{Project.table_name}.id = %d" % project.id
                  end
                  project_clauses.any? ? project_clauses.join(' AND ') : nil
                end
                def statement
                  # filters clauses
                  filters_clauses = []
                  filters.each_key do |field|
                    next if field == "subproject_id"
                    v = values_for(field).clone
                    next unless v and !v.empty?
                    operator = operator_for(field)
                    # "me" value subsitution
                    if %w(assigned_to_id author_id watcher_id).include?(field)
                      if v.delete("me")
                        if User.current.logged?
                          v.push(User.current.id.to_s)
                          v += User.current.group_ids.map(&:to_s) if field == 'assigned_to_id'
                        else
                          v.push("0")
                        end
                      end
                    end
                    if field == 'project_id'
                      if v.delete('mine')
                        v += User.current.memberships.map(&:project_id).map(&:to_s)
                      end
                    end
                    if field =~ /cf_(\d+)$/
                      # custom field
                      filters_clauses << sql_for_custom_field(field, operator, v, $1)
                    elsif respond_to?("sql_for_#{field}_field")
                      # specific statement
                      filters_clauses << send("sql_for_#{field}_field", field, operator, v)
                    else
                      # regular field
                      filters_clauses << '(' + sql_for_field(field, operator, v, queried_table_name, field) + ')'
                    end
                  end if filters and valid?
                  filters_clauses << project_statement
                  filters_clauses.reject!(&:blank?)
                  filters_clauses.any? ? filters_clauses.join(' AND ') : nil
                end
                private
                def sql_for_custom_field(field, operator, value, custom_field_id)
                  db_table = CustomValue.table_name
                  db_field = 'value'
                  filter = @available_filters[field]
                  return nil unless filter
                  if filter[:format] == 'user'
                    if value.delete('me')
                      value.push User.current.id.to_s
                    end
                  end
                  not_in = nil
                  if operator == '!'
                    # Makes ! operator work for custom fields with multiple values
                    operator = '='
                    not_in = 'NOT'
                  end
                  customized_key = "id"
                  customized_class = queried_class
                  if field =~ /^(.+)\.cf_/
                    assoc = $1
                    customized_key = "#{assoc}_id"
                    customized_class = queried_class.reflect_on_association(assoc.to_sym).klass.base_class rescue nil
                    raise "Unknown #{queried_class.name} association #{assoc}" unless customized_class
                  end
                  "#{queried_table_name}.#{customized_key} #{not_in} IN (SELECT #{customized_class.table_name}.id FROM #{customized_class.table_name} LEFT OUTER JOIN #{db_table} ON #{db_table}.customized_type='#{customized_class}' AND #{db_table}.customized_id=#{customized_class.table_name}.id AND #{db_table}.custom_field_id=#{custom_field_id} WHERE " +
                    sql_for_field(field, operator, value, db_table, db_field, true) + ')'
                end
                # Helper method to generate the WHERE sql for a +field+, +operator+ and a +value+
                def sql_for_field(field, operator, value, db_table, db_field, is_custom_filter=false)
                  sql = ''
                  case operator
                  when "="
                    if value.any?
                      case type_for(field)
                      when :date, :date_past
                        sql = date_clause(db_table, db_field, (Date.parse(value.first) rescue nil), (Date.parse(value.first) rescue nil))
                      when :integer
                        if is_custom_filter
                          sql = "(#{db_table}.#{db_field} <> '' AND CAST(#{db_table}.#{db_field} AS decimal(60,3)) = #{value.first.to_i})"
                        else
                          sql = "#{db_table}.#{db_field} = #{value.first.to_i}"
                        end
                      when :float
                        if is_custom_filter
                          sql = "(#{db_table}.#{db_field} <> '' AND CAST(#{db_table}.#{db_field} AS decimal(60,3)) BETWEEN #{value.first.to_f - 1e-5} AND #{value.first.to_f + 1e-5})"
                        else
                          sql = "#{db_table}.#{db_field} BETWEEN #{value.first.to_f - 1e-5} AND #{value.first.to_f + 1e-5}"
                        end
                      else
                        sql = "#{db_table}.#{db_field} IN (" + value.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + ")"
                      end
                    else
                      # IN an empty set
                      sql = "1=0"
                    end
                  when "!"
                    if value.any?
                      sql = "(#{db_table}.#{db_field} IS NULL OR #{db_table}.#{db_field} NOT IN (" + value.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + "))"
                    else
                      # NOT IN an empty set
                      sql = "1=1"
                    end
                  when "!*"
                    sql = "#{db_table}.#{db_field} IS NULL"
                    sql << " OR #{db_table}.#{db_field} = ''" if is_custom_filter
                  when "*"
                    sql = "#{db_table}.#{db_field} IS NOT NULL"
                    sql << " AND #{db_table}.#{db_field} <> ''" if is_custom_filter
                  when ">="
                    if [:date, :date_past].include?(type_for(field))
                      sql = date_clause(db_table, db_field, (Date.parse(value.first) rescue nil), nil)
                    else
                      if is_custom_filter
                        sql = "(#{db_table}.#{db_field} <> '' AND CAST(#{db_table}.#{db_field} AS decimal(60,3)) >= #{value.first.to_f})"
                      else
                        sql = "#{db_table}.#{db_field} >= #{value.first.to_f}"
                      end
                    end
                  when "<="
                    if [:date, :date_past].include?(type_for(field))
                      sql = date_clause(db_table, db_field, nil, (Date.parse(value.first) rescue nil))
                    else
                      if is_custom_filter
                        sql = "(#{db_table}.#{db_field} <> '' AND CAST(#{db_table}.#{db_field} AS decimal(60,3)) <= #{value.first.to_f})"
                      else
                        sql = "#{db_table}.#{db_field} <= #{value.first.to_f}"
                      end
                    end
                  when "><"
                    if [:date, :date_past].include?(type_for(field))
                      sql = date_clause(db_table, db_field, (Date.parse(value[0]) rescue nil), (Date.parse(value[1]) rescue nil))
                    else
                      if is_custom_filter
                        sql = "(#{db_table}.#{db_field} <> '' AND CAST(#{db_table}.#{db_field} AS decimal(60,3)) BETWEEN #{value[0].to_f} AND #{value[1].to_f})"
                      else
                        sql = "#{db_table}.#{db_field} BETWEEN #{value[0].to_f} AND #{value[1].to_f}"
                      end
                    end
                  when "o"
                    sql = "#{queried_table_name}.status_id IN (SELECT id FROM #{IssueStatus.table_name} WHERE is_closed=#{connection.quoted_false})" if field == "status_id"
                  when "c"
                    sql = "#{queried_table_name}.status_id IN (SELECT id FROM #{IssueStatus.table_name} WHERE is_closed=#{connection.quoted_true})" if field == "status_id"
                  when "><t-"
                    # between today - n days and today
                    sql = relative_date_clause(db_table, db_field, - value.first.to_i, 0)
                  when ">t-"
                    # >= today - n days
                    sql = relative_date_clause(db_table, db_field, - value.first.to_i, nil)
                  when "<t-"
                    # <= today - n days
                    sql = relative_date_clause(db_table, db_field, nil, - value.first.to_i)
                  when "t-"
                    # = n days in past
                    sql = relative_date_clause(db_table, db_field, - value.first.to_i, - value.first.to_i)
                  when "><t+"
                    # between today and today + n days
                    sql = relative_date_clause(db_table, db_field, 0, value.first.to_i)
                  when ">t+"
                    # >= today + n days
                    sql = relative_date_clause(db_table, db_field, value.first.to_i, nil)
                  when "<t+"
                    # <= today + n days
                    sql = relative_date_clause(db_table, db_field, nil, value.first.to_i)
                  when "t+"
                    # = today + n days
                    sql = relative_date_clause(db_table, db_field, value.first.to_i, value.first.to_i)
                  when "t"
                    # = today
                    sql = relative_date_clause(db_table, db_field, 0, 0)
                  when "ld"
                    # = yesterday
                    sql = relative_date_clause(db_table, db_field, -1, -1)
                  when "w"
                    # = this week
                    first_day_of_week = l(:general_first_day_of_week).to_i
                    day_of_week = Date.today.cwday
                    days_ago = (day_of_week >= first_day_of_week ? day_of_week - first_day_of_week : day_of_week + 7 - first_day_of_week)
                    sql = relative_date_clause(db_table, db_field, - days_ago, - days_ago + 6)
                  when "lw"
                    # = last week
                    first_day_of_week = l(:general_first_day_of_week).to_i
                    day_of_week = Date.today.cwday
                    days_ago = (day_of_week >= first_day_of_week ? day_of_week - first_day_of_week : day_of_week + 7 - first_day_of_week)
                    sql = relative_date_clause(db_table, db_field, - days_ago - 7, - days_ago - 1)
                  when "l2w"
                    # = last 2 weeks
                    first_day_of_week = l(:general_first_day_of_week).to_i
                    day_of_week = Date.today.cwday
                    days_ago = (day_of_week >= first_day_of_week ? day_of_week - first_day_of_week : day_of_week + 7 - first_day_of_week)
                    sql = relative_date_clause(db_table, db_field, - days_ago - 14, - days_ago - 1)
                  when "m"
                    # = this month
                    date = Date.today
                    sql = date_clause(db_table, db_field, date.beginning_of_month, date.end_of_month)
                  when "lm"
                    # = last month
                    date = Date.today.prev_month
                    sql = date_clause(db_table, db_field, date.beginning_of_month, date.end_of_month)
                  when "y"
                    # = this year
                    date = Date.today
                    sql = date_clause(db_table, db_field, date.beginning_of_year, date.end_of_year)
                  when "~"
                    sql = "LOWER(#{db_table}.#{db_field}) LIKE '%#{connection.quote_string(value.first.to_s.downcase)}%'"
                  when "!~"
                    sql = "LOWER(#{db_table}.#{db_field}) NOT LIKE '%#{connection.quote_string(value.first.to_s.downcase)}%'"
                  else
                    raise "Unknown query operator #{operator}"
                  end
                  return sql
                end
                def add_custom_fields_filters(custom_fields, assoc=nil)
                  return unless custom_fields.present?
                  @available_filters ||= {}
                  custom_fields.select(&:is_filter?).each do |field|
                    case field.field_format
                    when "text"
                      options = { :type => :text, :order => 20 }
                    when "list"
                      options = { :type => :list_optional, :values => field.possible_values, :order => 20}
                    when "date"
                      options = { :type => :date, :order => 20 }
                    when "bool"
                      options = { :type => :list, :values => [[l(:general_text_yes), "1"], [l(:general_text_no), "0"]], :order => 20 }
                    when "int"
                      options = { :type => :integer, :order => 20 }
                    when "float"
                      options = { :type => :float, :order => 20 }
                    when "user", "version"
                      next unless project
                      values = field.possible_values_options(project)
                      if User.current.logged? && field.field_format == 'user'
                        values.unshift ["<< #{l(:label_me)} >>", "me"]
                      end
                      options = { :type => :list_optional, :values => values, :order => 20}
                    else
                      options = { :type => :string, :order => 20 }
                    end
                    filter_id = "cf_#{field.id}"
                    filter_name = field.name
                    if assoc.present?
                      filter_id = "#{assoc}.#{filter_id}"
                      filter_name = l("label_attribute_of_#{assoc}", :name => filter_name)
                    end
                    @available_filters[filter_id] = options.merge({
                             :name => filter_name,
                             :format => field.field_format,
                             :field => field
                           })
                  end
                end
                def add_associations_custom_fields_filters(*associations)
                  fields_by_class = CustomField.where(:is_filter => true).group_by(&:class)
                  associations.each do |assoc|
                    association_klass = queried_class.reflect_on_association(assoc).klass
                    fields_by_class.each do |field_class, fields|
                      if field_class.customized_class <= association_klass
                        add_custom_fields_filters(fields, assoc)
                      end
                    end
                  end
                end
                # Returns a SQL clause for a date or datetime field.
                def date_clause(table, field, from, to)
                  s = []
                  if from
                    from_yesterday = from - 1
                    from_yesterday_time = Time.local(from_yesterday.year, from_yesterday.month, from_yesterday.day)
                    if self.class.default_timezone == :utc
                      from_yesterday_time = from_yesterday_time.utc
                    end
                    s << ("#{table}.#{field} > '%s'" % [connection.quoted_date(from_yesterday_time.end_of_day)])
                  end
                  if to
                    to_time = Time.local(to.year, to.month, to.day)
                    if self.class.default_timezone == :utc
                      to_time = to_time.utc
                    end
                    s << ("#{table}.#{field} <= '%s'" % [connection.quoted_date(to_time.end_of_day)])
                  end
                  s.join(' AND ')
                end
                # Returns a SQL clause for a date or datetime field using relative dates.
                def relative_date_clause(table, field, days_from, days_to)
                  date_clause(table, field, (days_from ? Date.today + days_from : nil), (days_to ? Date.today + days_to : nil))
                end
                # Additional joins required for the given sort options
                def joins_for_order_statement(order_options)
                  joins = []
                  if order_options
                    if order_options.include?('authors')
                      joins << "LEFT OUTER JOIN #{User.table_name} authors ON authors.id = #{queried_table_name}.author_id"
                    end
                    order_options.scan(/cf_\d+/).uniq.each do |name|
                      column = available_columns.detect {|c| c.name.to_s == name}
                      join = column && column.custom_field.join_for_order_statement
                      if join
                        joins << join
                      end
                    end
                  end
                  joins.any? ? joins.join(' ') : nil
                end
              end

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