Chris@0: # Redmine - project management software
Chris@441: # Copyright (C) 2006-2011  Jean-Philippe Lang
Chris@0: #
Chris@0: # This program is free software; you can redistribute it and/or
Chris@0: # modify it under the terms of the GNU General Public License
Chris@0: # as published by the Free Software Foundation; either version 2
Chris@0: # of the License, or (at your option) any later version.
Chris@441: #
Chris@0: # This program is distributed in the hope that it will be useful,
Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0: # GNU General Public License for more details.
Chris@441: #
Chris@0: # You should have received a copy of the GNU General Public License
Chris@0: # along with this program; if not, write to the Free Software
Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
Chris@0: 
Chris@441: class QueryColumn
Chris@0:   attr_accessor :name, :sortable, :groupable, :default_order
Chris@0:   include Redmine::I18n
Chris@441: 
Chris@0:   def initialize(name, options={})
Chris@0:     self.name = name
Chris@0:     self.sortable = options[:sortable]
Chris@0:     self.groupable = options[:groupable] || false
Chris@0:     if groupable == true
Chris@0:       self.groupable = name.to_s
Chris@0:     end
Chris@0:     self.default_order = options[:default_order]
Chris@0:     @caption_key = options[:caption] || "field_#{name}"
Chris@0:   end
Chris@441: 
Chris@0:   def caption
Chris@0:     l(@caption_key)
Chris@0:   end
Chris@441: 
Chris@0:   # Returns true if the column is sortable, otherwise false
Chris@0:   def sortable?
Chris@0:     !sortable.nil?
Chris@0:   end
Chris@441: 
Chris@0:   def value(issue)
Chris@0:     issue.send name
Chris@0:   end
Chris@441: 
Chris@441:   def css_classes
Chris@441:     name
Chris@441:   end
Chris@0: end
Chris@0: 
Chris@0: class QueryCustomFieldColumn < QueryColumn
Chris@0: 
Chris@0:   def initialize(custom_field)
Chris@0:     self.name = "cf_#{custom_field.id}".to_sym
Chris@0:     self.sortable = custom_field.order_statement || false
Chris@0:     if %w(list date bool int).include?(custom_field.field_format)
Chris@0:       self.groupable = custom_field.order_statement
Chris@0:     end
Chris@0:     self.groupable ||= false
Chris@0:     @cf = custom_field
Chris@0:   end
Chris@441: 
Chris@0:   def caption
Chris@0:     @cf.name
Chris@0:   end
Chris@441: 
Chris@0:   def custom_field
Chris@0:     @cf
Chris@0:   end
Chris@441: 
Chris@0:   def value(issue)
Chris@0:     cv = issue.custom_values.detect {|v| v.custom_field_id == @cf.id}
Chris@0:     cv && @cf.cast_value(cv.value)
Chris@0:   end
Chris@441: 
Chris@441:   def css_classes
Chris@441:     @css_classes ||= "#{name} #{@cf.field_format}"
Chris@441:   end
Chris@0: end
Chris@0: 
Chris@0: class Query < ActiveRecord::Base
Chris@0:   class StatementInvalid < ::ActiveRecord::StatementInvalid
Chris@0:   end
Chris@441: 
Chris@0:   belongs_to :project
Chris@0:   belongs_to :user
Chris@0:   serialize :filters
Chris@0:   serialize :column_names
Chris@0:   serialize :sort_criteria, Array
Chris@441: 
Chris@0:   attr_protected :project_id, :user_id
Chris@441: 
Chris@0:   validates_presence_of :name, :on => :save
Chris@0:   validates_length_of :name, :maximum => 255
Chris@441: 
Chris@441:   @@operators = { "="   => :label_equals,
Chris@0:                   "!"   => :label_not_equals,
Chris@0:                   "o"   => :label_open_issues,
Chris@0:                   "c"   => :label_closed_issues,
Chris@0:                   "!*"  => :label_none,
Chris@0:                   "*"   => :label_all,
Chris@0:                   ">="  => :label_greater_or_equal,
Chris@0:                   "<="  => :label_less_or_equal,
Chris@0:                   "<t+" => :label_in_less_than,
Chris@0:                   ">t+" => :label_in_more_than,
Chris@0:                   "t+"  => :label_in,
Chris@0:                   "t"   => :label_today,
Chris@0:                   "w"   => :label_this_week,
Chris@0:                   ">t-" => :label_less_than_ago,
Chris@0:                   "<t-" => :label_more_than_ago,
Chris@0:                   "t-"  => :label_ago,
Chris@0:                   "~"   => :label_contains,
Chris@0:                   "!~"  => :label_not_contains }
Chris@0: 
Chris@0:   cattr_reader :operators
Chris@441: 
Chris@0:   @@operators_by_filter_type = { :list => [ "=", "!" ],
Chris@0:                                  :list_status => [ "o", "=", "!", "c", "*" ],
Chris@0:                                  :list_optional => [ "=", "!", "!*", "*" ],
Chris@0:                                  :list_subprojects => [ "*", "!*", "=" ],
Chris@0:                                  :date => [ "<t+", ">t+", "t+", "t", "w", ">t-", "<t-", "t-" ],
Chris@0:                                  :date_past => [ ">t-", "<t-", "t-", "t", "w" ],
Chris@0:                                  :string => [ "=", "~", "!", "!~" ],
Chris@0:                                  :text => [  "~", "!~" ],
Chris@0:                                  :integer => [ "=", ">=", "<=", "!*", "*" ] }
Chris@0: 
Chris@0:   cattr_reader :operators_by_filter_type
Chris@0: 
Chris@0:   @@available_columns = [
Chris@0:     QueryColumn.new(:project, :sortable => "#{Project.table_name}.name", :groupable => true),
Chris@0:     QueryColumn.new(:tracker, :sortable => "#{Tracker.table_name}.position", :groupable => true),
Chris@0:     QueryColumn.new(:parent, :sortable => ["#{Issue.table_name}.root_id", "#{Issue.table_name}.lft ASC"], :default_order => 'desc', :caption => :field_parent_issue),
Chris@0:     QueryColumn.new(:status, :sortable => "#{IssueStatus.table_name}.position", :groupable => true),
Chris@0:     QueryColumn.new(:priority, :sortable => "#{IssuePriority.table_name}.position", :default_order => 'desc', :groupable => true),
Chris@0:     QueryColumn.new(:subject, :sortable => "#{Issue.table_name}.subject"),
Chris@0:     QueryColumn.new(:author),
Chris@0:     QueryColumn.new(:assigned_to, :sortable => ["#{User.table_name}.lastname", "#{User.table_name}.firstname", "#{User.table_name}.id"], :groupable => true),
Chris@0:     QueryColumn.new(:updated_on, :sortable => "#{Issue.table_name}.updated_on", :default_order => 'desc'),
Chris@0:     QueryColumn.new(:category, :sortable => "#{IssueCategory.table_name}.name", :groupable => true),
Chris@0:     QueryColumn.new(:fixed_version, :sortable => ["#{Version.table_name}.effective_date", "#{Version.table_name}.name"], :default_order => 'desc', :groupable => true),
Chris@0:     QueryColumn.new(:start_date, :sortable => "#{Issue.table_name}.start_date"),
Chris@0:     QueryColumn.new(:due_date, :sortable => "#{Issue.table_name}.due_date"),
Chris@0:     QueryColumn.new(:estimated_hours, :sortable => "#{Issue.table_name}.estimated_hours"),
Chris@0:     QueryColumn.new(:done_ratio, :sortable => "#{Issue.table_name}.done_ratio", :groupable => true),
Chris@0:     QueryColumn.new(:created_on, :sortable => "#{Issue.table_name}.created_on", :default_order => 'desc'),
Chris@0:   ]
Chris@0:   cattr_reader :available_columns
Chris@441: 
Chris@0:   def initialize(attributes = nil)
Chris@0:     super attributes
Chris@0:     self.filters ||= { 'status_id' => {:operator => "o", :values => [""]} }
Chris@0:   end
Chris@441: 
Chris@0:   def after_initialize
Chris@0:     # Store the fact that project is nil (used in #editable_by?)
Chris@0:     @is_for_all = project.nil?
Chris@0:   end
Chris@441: 
Chris@0:   def validate
Chris@0:     filters.each_key do |field|
Chris@441:       errors.add label_for(field), :blank unless
Chris@0:           # filter requires one or more values
Chris@441:           (values_for(field) and !values_for(field).first.blank?) or
Chris@0:           # filter doesn't require any value
Chris@0:           ["o", "c", "!*", "*", "t", "w"].include? operator_for(field)
Chris@0:     end if filters
Chris@0:   end
Chris@507:   
Chris@507:   # Returns true if the query is visible to +user+ or the current user.
Chris@507:   def visible?(user=User.current)
Chris@507:     self.is_public? || self.user_id == user.id
Chris@507:   end
Chris@441: 
Chris@0:   def editable_by?(user)
Chris@0:     return false unless user
Chris@0:     # Admin can edit them all and regular users can edit their private queries
Chris@0:     return true if user.admin? || (!is_public && self.user_id == user.id)
Chris@0:     # Members can not edit public queries that are for all project (only admin is allowed to)
Chris@0:     is_public && !@is_for_all && user.allowed_to?(:manage_public_queries, project)
Chris@0:   end
Chris@441: 
Chris@0:   def available_filters
Chris@0:     return @available_filters if @available_filters
Chris@441: 
Chris@0:     trackers = project.nil? ? Tracker.find(:all, :order => 'position') : project.rolled_up_trackers
Chris@441: 
Chris@441:     @available_filters = { "status_id" => { :type => :list_status, :order => 1, :values => IssueStatus.find(:all, :order => 'position').collect{|s| [s.name, s.id.to_s] } },
Chris@441:                            "tracker_id" => { :type => :list, :order => 2, :values => trackers.collect{|s| [s.name, s.id.to_s] } },
Chris@0:                            "priority_id" => { :type => :list, :order => 3, :values => IssuePriority.all.collect{|s| [s.name, s.id.to_s] } },
Chris@441:                            "subject" => { :type => :text, :order => 8 },
Chris@441:                            "created_on" => { :type => :date_past, :order => 9 },
Chris@0:                            "updated_on" => { :type => :date_past, :order => 10 },
Chris@0:                            "start_date" => { :type => :date, :order => 11 },
Chris@0:                            "due_date" => { :type => :date, :order => 12 },
Chris@0:                            "estimated_hours" => { :type => :integer, :order => 13 },
Chris@0:                            "done_ratio" =>  { :type => :integer, :order => 14 }}
Chris@441: 
Chris@0:     user_values = []
Chris@0:     user_values << ["<< #{l(:label_me)} >>", "me"] if User.current.logged?
Chris@0:     if project
Chris@0:       user_values += project.users.sort.collect{|s| [s.name, s.id.to_s] }
Chris@0:     else
Chris@119:       all_projects = Project.visible.all
Chris@119:       if all_projects.any?
Chris@119:         # members of visible projects
Chris@119:         user_values += User.active.find(:all, :conditions => ["#{User.table_name}.id IN (SELECT DISTINCT user_id FROM members WHERE project_id IN (?))", all_projects.collect(&:id)]).sort.collect{|s| [s.name, s.id.to_s] }
Chris@441: 
Chris@119:         # project filter
Chris@119:         project_values = []
Chris@119:         Project.project_tree(all_projects) do |p, level|
Chris@119:           prefix = (level > 0 ? ('--' * level + ' ') : '')
Chris@119:           project_values << ["#{prefix}#{p.name}", p.id.to_s]
Chris@119:         end
Chris@119:         @available_filters["project_id"] = { :type => :list, :order => 1, :values => project_values} unless project_values.empty?
Chris@0:       end
Chris@0:     end
Chris@0:     @available_filters["assigned_to_id"] = { :type => :list_optional, :order => 4, :values => user_values } unless user_values.empty?
Chris@0:     @available_filters["author_id"] = { :type => :list, :order => 5, :values => user_values } unless user_values.empty?
chris@22: 
chris@37:     group_values = Group.all.collect {|g| [g.name, g.id.to_s] }
chris@22:     @available_filters["member_of_group"] = { :type => :list_optional, :order => 6, :values => group_values } unless group_values.empty?
chris@22: 
chris@37:     role_values = Role.givable.collect {|r| [r.name, r.id.to_s] }
chris@22:     @available_filters["assigned_to_role"] = { :type => :list_optional, :order => 7, :values => role_values } unless role_values.empty?
Chris@441: 
Chris@0:     if User.current.logged?
Chris@0:       @available_filters["watcher_id"] = { :type => :list, :order => 15, :values => [["<< #{l(:label_me)} >>", "me"]] }
Chris@0:     end
Chris@441: 
Chris@0:     if project
Chris@0:       # project specific filters
Chris@441:       categories = @project.issue_categories.all
Chris@441:       unless categories.empty?
Chris@441:         @available_filters["category_id"] = { :type => :list_optional, :order => 6, :values => categories.collect{|s| [s.name, s.id.to_s] } }
Chris@0:       end
Chris@441:       versions = @project.shared_versions.all
Chris@441:       unless versions.empty?
Chris@441:         @available_filters["fixed_version_id"] = { :type => :list_optional, :order => 7, :values => versions.sort.collect{|s| ["#{s.project.name} - #{s.name}", s.id.to_s] } }
Chris@0:       end
Chris@441:       unless @project.leaf?
Chris@441:         subprojects = @project.descendants.visible.all
Chris@441:         unless subprojects.empty?
Chris@441:           @available_filters["subproject_id"] = { :type => :list_subprojects, :order => 13, :values => subprojects.collect{|s| [s.name, s.id.to_s] } }
Chris@441:         end
Chris@0:       end
Chris@0:       add_custom_fields_filters(@project.all_issue_custom_fields)
Chris@0:     else
Chris@0:       # global filters for cross project issue list
Chris@0:       system_shared_versions = Version.visible.find_all_by_sharing('system')
Chris@0:       unless system_shared_versions.empty?
Chris@0:         @available_filters["fixed_version_id"] = { :type => :list_optional, :order => 7, :values => system_shared_versions.sort.collect{|s| ["#{s.project.name} - #{s.name}", s.id.to_s] } }
Chris@0:       end
Chris@0:       add_custom_fields_filters(IssueCustomField.find(:all, :conditions => {:is_filter => true, :is_for_all => true}))
Chris@0:     end
Chris@0:     @available_filters
Chris@0:   end
Chris@441: 
Chris@0:   def add_filter(field, operator, values)
Chris@0:     # values must be an array
Chris@0:     return unless values and values.is_a? Array # and !values.first.empty?
Chris@0:     # check if field is defined as an available filter
Chris@0:     if available_filters.has_key? field
Chris@0:       filter_options = available_filters[field]
Chris@0:       # check if operator is allowed for that filter
Chris@0:       #if @@operators_by_filter_type[filter_options[:type]].include? operator
Chris@0:       #  allowed_values = values & ([""] + (filter_options[:values] || []).collect {|val| val[1]})
Chris@0:       #  filters[field] = {:operator => operator, :values => allowed_values } if (allowed_values.first and !allowed_values.first.empty?) or ["o", "c", "!*", "*", "t"].include? operator
Chris@0:       #end
Chris@0:       filters[field] = {:operator => operator, :values => values }
Chris@0:     end
Chris@0:   end
Chris@441: 
Chris@0:   def add_short_filter(field, expression)
Chris@0:     return unless expression
Chris@0:     parms = expression.scan(/^(o|c|!\*|!|\*)?(.*)$/).first
Chris@0:     add_filter field, (parms[0] || "="), [parms[1] || ""]
Chris@0:   end
Chris@0: 
Chris@0:   # Add multiple filters using +add_filter+
Chris@0:   def add_filters(fields, operators, values)
chris@37:     if fields.is_a?(Array) && operators.is_a?(Hash) && values.is_a?(Hash)
chris@37:       fields.each do |field|
chris@37:         add_filter(field, operators[field], values[field])
chris@37:       end
Chris@0:     end
Chris@0:   end
Chris@441: 
Chris@0:   def has_filter?(field)
Chris@0:     filters and filters[field]
Chris@0:   end
Chris@441: 
Chris@0:   def operator_for(field)
Chris@0:     has_filter?(field) ? filters[field][:operator] : nil
Chris@0:   end
Chris@441: 
Chris@0:   def values_for(field)
Chris@0:     has_filter?(field) ? filters[field][:values] : nil
Chris@0:   end
Chris@441: 
Chris@0:   def label_for(field)
Chris@0:     label = available_filters[field][:name] if available_filters.has_key?(field)
Chris@0:     label ||= field.gsub(/\_id$/, "")
Chris@0:   end
Chris@0: 
Chris@0:   def available_columns
Chris@0:     return @available_columns if @available_columns
Chris@0:     @available_columns = Query.available_columns
Chris@0:     @available_columns += (project ? 
Chris@0:                             project.all_issue_custom_fields :
Chris@0:                             IssueCustomField.find(:all)
Chris@441:                            ).collect {|cf| QueryCustomFieldColumn.new(cf) }
Chris@0:   end
Chris@0: 
Chris@0:   def self.available_columns=(v)
Chris@0:     self.available_columns = (v)
Chris@0:   end
Chris@441: 
Chris@0:   def self.add_available_column(column)
Chris@0:     self.available_columns << (column) if column.is_a?(QueryColumn)
Chris@0:   end
Chris@441: 
Chris@0:   # Returns an array of columns that can be used to group the results
Chris@0:   def groupable_columns
Chris@0:     available_columns.select {|c| c.groupable}
Chris@0:   end
Chris@0: 
Chris@0:   # Returns a Hash of columns and the key for sorting
Chris@0:   def sortable_columns
Chris@0:     {'id' => "#{Issue.table_name}.id"}.merge(available_columns.inject({}) {|h, column|
Chris@0:                                                h[column.name.to_s] = column.sortable
Chris@0:                                                h
Chris@0:                                              })
Chris@0:   end
Chris@441: 
Chris@0:   def columns
Chris@0:     if has_default_columns?
Chris@0:       available_columns.select do |c|
Chris@0:         # Adds the project column by default for cross-project lists
Chris@0:         Setting.issue_list_default_columns.include?(c.name.to_s) || (c.name == :project && project.nil?)
Chris@0:       end
Chris@0:     else
Chris@0:       # preserve the column_names order
Chris@0:       column_names.collect {|name| available_columns.find {|col| col.name == name}}.compact
Chris@0:     end
Chris@0:   end
Chris@441: 
Chris@0:   def column_names=(names)
Chris@0:     if names
Chris@0:       names = names.select {|n| n.is_a?(Symbol) || !n.blank? }
Chris@0:       names = names.collect {|n| n.is_a?(Symbol) ? n : n.to_sym }
Chris@0:       # Set column_names to nil if default columns
Chris@0:       if names.map(&:to_s) == Setting.issue_list_default_columns
Chris@0:         names = nil
Chris@0:       end
Chris@0:     end
Chris@0:     write_attribute(:column_names, names)
Chris@0:   end
Chris@441: 
Chris@0:   def has_column?(column)
Chris@0:     column_names && column_names.include?(column.name)
Chris@0:   end
Chris@441: 
Chris@0:   def has_default_columns?
Chris@0:     column_names.nil? || column_names.empty?
Chris@0:   end
Chris@441: 
Chris@0:   def sort_criteria=(arg)
Chris@0:     c = []
Chris@0:     if arg.is_a?(Hash)
Chris@0:       arg = arg.keys.sort.collect {|k| arg[k]}
Chris@0:     end
Chris@0:     c = arg.select {|k,o| !k.to_s.blank?}.slice(0,3).collect {|k,o| [k.to_s, o == 'desc' ? o : 'asc']}
Chris@0:     write_attribute(:sort_criteria, c)
Chris@0:   end
Chris@441: 
Chris@0:   def sort_criteria
Chris@0:     read_attribute(:sort_criteria) || []
Chris@0:   end
Chris@441: 
Chris@0:   def sort_criteria_key(arg)
Chris@0:     sort_criteria && sort_criteria[arg] && sort_criteria[arg].first
Chris@0:   end
Chris@441: 
Chris@0:   def sort_criteria_order(arg)
Chris@0:     sort_criteria && sort_criteria[arg] && sort_criteria[arg].last
Chris@0:   end
Chris@441: 
Chris@0:   # Returns the SQL sort order that should be prepended for grouping
Chris@0:   def group_by_sort_order
Chris@0:     if grouped? && (column = group_by_column)
Chris@0:       column.sortable.is_a?(Array) ?
Chris@0:         column.sortable.collect {|s| "#{s} #{column.default_order}"}.join(',') :
Chris@0:         "#{column.sortable} #{column.default_order}"
Chris@0:     end
Chris@0:   end
Chris@441: 
Chris@0:   # Returns true if the query is a grouped query
Chris@0:   def grouped?
Chris@119:     !group_by_column.nil?
Chris@0:   end
Chris@441: 
Chris@0:   def group_by_column
Chris@119:     groupable_columns.detect {|c| c.groupable && c.name.to_s == group_by}
Chris@0:   end
Chris@441: 
Chris@0:   def group_by_statement
Chris@119:     group_by_column.try(:groupable)
Chris@0:   end
Chris@441: 
Chris@0:   def project_statement
Chris@0:     project_clauses = []
Chris@0:     if project && !@project.descendants.active.empty?
Chris@0:       ids = [project.id]
Chris@0:       if has_filter?("subproject_id")
Chris@0:         case operator_for("subproject_id")
Chris@0:         when '='
Chris@0:           # include the selected subprojects
Chris@0:           ids += values_for("subproject_id").each(&:to_i)
Chris@0:         when '!*'
Chris@0:           # main project only
Chris@0:         else
Chris@0:           # all subprojects
Chris@0:           ids += project.descendants.collect(&:id)
Chris@0:         end
Chris@0:       elsif Setting.display_subprojects_issues?
Chris@0:         ids += project.descendants.collect(&:id)
Chris@0:       end
Chris@0:       project_clauses << "#{Project.table_name}.id IN (%s)" % ids.join(',')
Chris@0:     elsif project
Chris@0:       project_clauses << "#{Project.table_name}.id = %d" % project.id
Chris@0:     end
Chris@441:     project_clauses.any? ? project_clauses.join(' AND ') : nil
Chris@0:   end
Chris@0: 
Chris@0:   def statement
Chris@0:     # filters clauses
Chris@0:     filters_clauses = []
Chris@0:     filters.each_key do |field|
Chris@0:       next if field == "subproject_id"
Chris@0:       v = values_for(field).clone
Chris@0:       next unless v and !v.empty?
Chris@0:       operator = operator_for(field)
Chris@441: 
Chris@0:       # "me" value subsitution
Chris@0:       if %w(assigned_to_id author_id watcher_id).include?(field)
Chris@0:         v.push(User.current.logged? ? User.current.id.to_s : "0") if v.delete("me")
Chris@0:       end
Chris@441: 
Chris@0:       sql = ''
Chris@0:       if field =~ /^cf_(\d+)$/
Chris@0:         # custom field
Chris@0:         db_table = CustomValue.table_name
Chris@0:         db_field = 'value'
Chris@0:         is_custom_filter = true
Chris@0:         sql << "#{Issue.table_name}.id IN (SELECT #{Issue.table_name}.id FROM #{Issue.table_name} LEFT OUTER JOIN #{db_table} ON #{db_table}.customized_type='Issue' AND #{db_table}.customized_id=#{Issue.table_name}.id AND #{db_table}.custom_field_id=#{$1} WHERE "
Chris@0:         sql << sql_for_field(field, operator, v, db_table, db_field, true) + ')'
Chris@0:       elsif field == 'watcher_id'
Chris@0:         db_table = Watcher.table_name
Chris@0:         db_field = 'user_id'
Chris@0:         sql << "#{Issue.table_name}.id #{ operator == '=' ? 'IN' : 'NOT IN' } (SELECT #{db_table}.watchable_id FROM #{db_table} WHERE #{db_table}.watchable_type='Issue' AND "
Chris@0:         sql << sql_for_field(field, '=', v, db_table, db_field) + ')'
chris@22:       elsif field == "member_of_group" # named field
chris@22:         if operator == '*' # Any group
chris@22:           groups = Group.all
chris@22:           operator = '=' # Override the operator since we want to find by assigned_to
chris@22:         elsif operator == "!*"
chris@22:           groups = Group.all
chris@22:           operator = '!' # Override the operator since we want to find by assigned_to
chris@22:         else
chris@22:           groups = Group.find_all_by_id(v)
chris@22:         end
chris@22:         groups ||= []
chris@22: 
chris@22:         members_of_groups = groups.inject([]) {|user_ids, group|
chris@22:           if group && group.user_ids.present?
chris@22:             user_ids << group.user_ids
chris@22:           end
chris@22:           user_ids.flatten.uniq.compact
chris@22:         }.sort.collect(&:to_s)
Chris@441: 
chris@22:         sql << '(' + sql_for_field("assigned_to_id", operator, members_of_groups, Issue.table_name, "assigned_to_id", false) + ')'
chris@22: 
chris@22:       elsif field == "assigned_to_role" # named field
chris@22:         if operator == "*" # Any Role
chris@22:           roles = Role.givable
chris@22:           operator = '=' # Override the operator since we want to find by assigned_to
chris@22:         elsif operator == "!*" # No role
chris@22:           roles = Role.givable
chris@22:           operator = '!' # Override the operator since we want to find by assigned_to
chris@22:         else
chris@22:           roles = Role.givable.find_all_by_id(v)
chris@22:         end
chris@22:         roles ||= []
Chris@441: 
chris@22:         members_of_roles = roles.inject([]) {|user_ids, role|
chris@22:           if role && role.members
chris@22:             user_ids << role.members.collect(&:user_id)
chris@22:           end
chris@22:           user_ids.flatten.uniq.compact
chris@22:         }.sort.collect(&:to_s)
Chris@441: 
chris@22:         sql << '(' + sql_for_field("assigned_to_id", operator, members_of_roles, Issue.table_name, "assigned_to_id", false) + ')'
Chris@0:       else
Chris@0:         # regular field
Chris@0:         db_table = Issue.table_name
Chris@0:         db_field = field
Chris@0:         sql << '(' + sql_for_field(field, operator, v, db_table, db_field) + ')'
Chris@0:       end
Chris@0:       filters_clauses << sql
Chris@441: 
Chris@0:     end if filters and valid?
Chris@441: 
Chris@441:     filters_clauses << project_statement
Chris@441:     filters_clauses.reject!(&:blank?)
Chris@441: 
Chris@441:     filters_clauses.any? ? filters_clauses.join(' AND ') : nil
Chris@0:   end
Chris@441: 
Chris@0:   # Returns the issue count
Chris@0:   def issue_count
Chris@0:     Issue.count(:include => [:status, :project], :conditions => statement)
Chris@0:   rescue ::ActiveRecord::StatementInvalid => e
Chris@0:     raise StatementInvalid.new(e.message)
Chris@0:   end
Chris@441: 
Chris@0:   # Returns the issue count by group or nil if query is not grouped
Chris@0:   def issue_count_by_group
Chris@0:     r = nil
Chris@0:     if grouped?
Chris@0:       begin
Chris@0:         # Rails will raise an (unexpected) RecordNotFound if there's only a nil group value
Chris@441:         r = Issue.visible.count(:group => group_by_statement, :include => [:status, :project], :conditions => statement)
Chris@0:       rescue ActiveRecord::RecordNotFound
Chris@0:         r = {nil => issue_count}
Chris@0:       end
Chris@0:       c = group_by_column
Chris@0:       if c.is_a?(QueryCustomFieldColumn)
Chris@0:         r = r.keys.inject({}) {|h, k| h[c.custom_field.cast_value(k)] = r[k]; h}
Chris@0:       end
Chris@0:     end
Chris@0:     r
Chris@0:   rescue ::ActiveRecord::StatementInvalid => e
Chris@0:     raise StatementInvalid.new(e.message)
Chris@0:   end
Chris@441: 
Chris@0:   # Returns the issues
Chris@0:   # Valid options are :order, :offset, :limit, :include, :conditions
Chris@0:   def issues(options={})
Chris@0:     order_option = [group_by_sort_order, options[:order]].reject {|s| s.blank?}.join(',')
Chris@0:     order_option = nil if order_option.blank?
Chris@441: 
Chris@441:     Issue.visible.find :all, :include => ([:status, :project] + (options[:include] || [])).uniq,
Chris@0:                      :conditions => Query.merge_conditions(statement, options[:conditions]),
Chris@0:                      :order => order_option,
Chris@0:                      :limit  => options[:limit],
Chris@0:                      :offset => options[:offset]
Chris@0:   rescue ::ActiveRecord::StatementInvalid => e
Chris@0:     raise StatementInvalid.new(e.message)
Chris@0:   end
Chris@0: 
Chris@0:   # Returns the journals
Chris@0:   # Valid options are :order, :offset, :limit
Chris@0:   def journals(options={})
Chris@441:     Journal.visible.find :all, :include => [:details, :user, {:issue => [:project, :author, :tracker, :status]}],
Chris@0:                        :conditions => statement,
Chris@0:                        :order => options[:order],
Chris@0:                        :limit => options[:limit],
Chris@0:                        :offset => options[:offset]
Chris@0:   rescue ::ActiveRecord::StatementInvalid => e
Chris@0:     raise StatementInvalid.new(e.message)
Chris@0:   end
Chris@441: 
Chris@0:   # Returns the versions
Chris@0:   # Valid options are :conditions
Chris@0:   def versions(options={})
Chris@441:     Version.visible.find :all, :include => :project,
Chris@0:                        :conditions => Query.merge_conditions(project_statement, options[:conditions])
Chris@0:   rescue ::ActiveRecord::StatementInvalid => e
Chris@0:     raise StatementInvalid.new(e.message)
Chris@0:   end
Chris@441: 
Chris@0:   private
Chris@441: 
Chris@0:   # Helper method to generate the WHERE sql for a +field+, +operator+ and a +value+
Chris@0:   def sql_for_field(field, operator, value, db_table, db_field, is_custom_filter=false)
Chris@0:     sql = ''
Chris@0:     case operator
Chris@0:     when "="
Chris@245:       if value.any?
Chris@245:         sql = "#{db_table}.#{db_field} IN (" + value.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + ")"
Chris@245:       else
Chris@245:         # IN an empty set
Chris@245:         sql = "1=0"
Chris@245:       end
Chris@0:     when "!"
Chris@245:       if value.any?
Chris@245:         sql = "(#{db_table}.#{db_field} IS NULL OR #{db_table}.#{db_field} NOT IN (" + value.collect{|val| "'#{connection.quote_string(val)}'"}.join(",") + "))"
Chris@245:       else
Chris@245:         # NOT IN an empty set
Chris@245:         sql = "1=1"
Chris@245:       end
Chris@0:     when "!*"
Chris@0:       sql = "#{db_table}.#{db_field} IS NULL"
Chris@0:       sql << " OR #{db_table}.#{db_field} = ''" if is_custom_filter
Chris@0:     when "*"
Chris@0:       sql = "#{db_table}.#{db_field} IS NOT NULL"
Chris@0:       sql << " AND #{db_table}.#{db_field} <> ''" if is_custom_filter
Chris@0:     when ">="
Chris@0:       sql = "#{db_table}.#{db_field} >= #{value.first.to_i}"
Chris@0:     when "<="
Chris@0:       sql = "#{db_table}.#{db_field} <= #{value.first.to_i}"
Chris@0:     when "o"
Chris@0:       sql = "#{IssueStatus.table_name}.is_closed=#{connection.quoted_false}" if field == "status_id"
Chris@0:     when "c"
Chris@0:       sql = "#{IssueStatus.table_name}.is_closed=#{connection.quoted_true}" if field == "status_id"
Chris@0:     when ">t-"
Chris@0:       sql = date_range_clause(db_table, db_field, - value.first.to_i, 0)
Chris@0:     when "<t-"
Chris@0:       sql = date_range_clause(db_table, db_field, nil, - value.first.to_i)
Chris@0:     when "t-"
Chris@0:       sql = date_range_clause(db_table, db_field, - value.first.to_i, - value.first.to_i)
Chris@0:     when ">t+"
Chris@0:       sql = date_range_clause(db_table, db_field, value.first.to_i, nil)
Chris@0:     when "<t+"
Chris@0:       sql = date_range_clause(db_table, db_field, 0, value.first.to_i)
Chris@0:     when "t+"
Chris@0:       sql = date_range_clause(db_table, db_field, value.first.to_i, value.first.to_i)
Chris@0:     when "t"
Chris@0:       sql = date_range_clause(db_table, db_field, 0, 0)
Chris@0:     when "w"
Chris@441:       first_day_of_week = l(:general_first_day_of_week).to_i
Chris@441:       day_of_week = Date.today.cwday
Chris@441:       days_ago = (day_of_week >= first_day_of_week ? day_of_week - first_day_of_week : day_of_week + 7 - first_day_of_week)
Chris@441:       sql = date_range_clause(db_table, db_field, - days_ago, - days_ago + 6)
Chris@0:     when "~"
Chris@0:       sql = "LOWER(#{db_table}.#{db_field}) LIKE '%#{connection.quote_string(value.first.to_s.downcase)}%'"
Chris@0:     when "!~"
Chris@0:       sql = "LOWER(#{db_table}.#{db_field}) NOT LIKE '%#{connection.quote_string(value.first.to_s.downcase)}%'"
Chris@0:     end
Chris@441: 
Chris@0:     return sql
Chris@0:   end
Chris@441: 
Chris@0:   def add_custom_fields_filters(custom_fields)
Chris@0:     @available_filters ||= {}
Chris@441: 
Chris@0:     custom_fields.select(&:is_filter?).each do |field|
Chris@0:       case field.field_format
Chris@0:       when "text"
Chris@0:         options = { :type => :text, :order => 20 }
Chris@0:       when "list"
Chris@0:         options = { :type => :list_optional, :values => field.possible_values, :order => 20}
Chris@0:       when "date"
Chris@0:         options = { :type => :date, :order => 20 }
Chris@0:       when "bool"
Chris@0:         options = { :type => :list, :values => [[l(:general_text_yes), "1"], [l(:general_text_no), "0"]], :order => 20 }
Chris@441:       when "user", "version"
Chris@441:         next unless project
Chris@441:         options = { :type => :list_optional, :values => field.possible_values_options(project), :order => 20}
Chris@0:       else
Chris@0:         options = { :type => :string, :order => 20 }
Chris@0:       end
Chris@0:       @available_filters["cf_#{field.id}"] = options.merge({ :name => field.name })
Chris@0:     end
Chris@0:   end
Chris@441: 
Chris@0:   # Returns a SQL clause for a date or datetime field.
Chris@0:   def date_range_clause(table, field, from, to)
Chris@0:     s = []
Chris@0:     if from
Chris@0:       s << ("#{table}.#{field} > '%s'" % [connection.quoted_date((Date.yesterday + from).to_time.end_of_day)])
Chris@0:     end
Chris@0:     if to
Chris@0:       s << ("#{table}.#{field} <= '%s'" % [connection.quoted_date((Date.today + to).to_time.end_of_day)])
Chris@0:     end
Chris@0:     s.join(' AND ')
Chris@0:   end
Chris@0: end