Class: SimpleDrilldown::Controller
- Inherits:
-
ApplicationController
- Object
- ApplicationController
- SimpleDrilldown::Controller
- Defined in:
- lib/simple_drilldown/controller.rb
Defined Under Namespace
Classes: ScopeHolder
Constant Summary collapse
- LIST_LIMIT =
10_000
Class Method Summary collapse
- .base_condition(base_condition) ⇒ Object
- .base_group(base_group) ⇒ Object
- .base_includes(base_includes) ⇒ Object
- .default_fields(default_fields) ⇒ Object
- .default_select_value(default_select_value) ⇒ Object
- .dimension(name, select_expression = name, options = {}) ⇒ Object
- .field(name, **options) ⇒ Object
- .inherited(base) ⇒ Object
- .legal_values_for(field, preserve_filter = false) ⇒ Object
- .list_includes(list_includes) ⇒ Object
- .list_order(list_order) ⇒ Object
- .make_conditions(search_filter) ⇒ Object
- .make_join(joins, model, include, model_class = model.to_s.camelize.constantize) ⇒ Object
- .select(select) ⇒ Object
- .summary_fields(*summary_fields) ⇒ Object
- .target_class(target_class) ⇒ Object
Instance Method Summary collapse
- #choices ⇒ Object
- #excel_export ⇒ Object
- #excel_export_records ⇒ Object
- #html_export ⇒ Object
-
#index(do_render = true) ⇒ Object
?dimension=supplier&dimension=transaction_type& filter=2009&filter[0]=Shell&filter[1]=Statoil.
-
#initialize ⇒ Controller
constructor
A new instance of Controller.
Constructor Details
#initialize ⇒ Controller
Returns a new instance of Controller.
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# File 'lib/simple_drilldown/controller.rb', line 297 def initialize super() @history_fields = c_fields.select { |_k, v| v[:list_change_times] }.map { |k, _v| k.to_s } end |
Class Method Details
.base_condition(base_condition) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 44 def base_condition(base_condition) self.c_base_condition = base_condition end |
.base_group(base_group) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 52 def base_group(base_group) self.c_base_group = base_group end |
.base_includes(base_includes) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 48 def base_includes(base_includes) self.c_base_includes = base_includes end |
.default_fields(default_fields) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 56 def default_fields(default_fields) self.c_default_fields = default_fields.flatten end |
.default_select_value(default_select_value) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 60 def default_select_value(default_select_value) self.c_default_select_value = default_select_value end |
.dimension(name, select_expression = name, options = {}) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 88 def dimension(name, select_expression = name, = {}) interval = .delete(:interval) label_method = .delete(:label_method) legal_values = .delete(:legal_values) || legal_values_for(name) reverse = .delete(:reverse) row_class = .delete(:row_class) if select_expression.is_a?(Array) queries = select_expression else includes = .delete(:includes) conditions = .delete(:where) queries = [{ select: select_expression, includes: includes, where: conditions }] end raise "Unexpected options: #{.inspect}" if .present? queries.each do |query_opts| unless (query_opts.keys - %i[select includes where]).empty? raise "Unknown options: #{query_opts.keys.inspect}" end end c_dimension_defs[name.to_s] = { includes: queries.inject(nil) do |a, e| i = e[:includes] next a unless i next a if a&.include?(i) case a when nil i when Symbol [a, *i] else a.concat(*i) end end, interval: interval, label_method: label_method, legal_values: legal_values, pretty_name: I18n.t(name, default: :"activerecord.models.#{name}"), queries: queries, reverse: reverse, select_expression: queries.size == 1 ? queries[0][:select] : "COALESCE(#{queries.map { |q| q[:select] }.join(',')})", row_class: row_class, url_param_name: name.to_s } end |
.field(name, **options) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 80 def field(name, **) c_fields[name] = end |
.inherited(base) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 26 def inherited(base) super base.c_dimension_defs = Concurrent::Hash.new base.c_fields = {} begin base.c_target_class = base.name.chomp('DrilldownController').constantize rescue NameError begin base.c_target_class = base.name.chomp('Controller').constantize rescue NameError # No default target class found end end return unless base.c_target_class.try :paranoid? base.c_base_condition = "#{base.c_target_class.table_name}.deleted_at IS NULL" end |
.legal_values_for(field, preserve_filter = false) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 141 def legal_values_for(field, preserve_filter = false) lambda do |search| my_filter = search.filter.dup my_filter.delete(field.to_s) unless preserve_filter filter_conditions, _t, includes = make_conditions(my_filter) dimension_def = c_dimension_defs[field.to_s] result_sets = dimension_def[:queries].map do |query| if query[:includes] if query[:includes].is_a?(Array) includes += query[:includes] else includes << query[:includes] end includes.uniq! end rows = c_target_class.unscoped.where(c_base_condition) .select("#{query[:select]} AS value") .where(filter_conditions || '1=1') .where(query[:where] || '1=1') .joins(make_join([], c_target_class.name.underscore.to_sym, includes)) .order('value') .group(:value) .to_a filter_fields = search.filter[field.to_s] filter_fields&.each do |selected_value| next if rows.find { |r| r[:value].to_s == selected_value } # FIXME(uwe): Convert the selected value to same data type as legal values rows << { value: selected_value } # EMXIF end rows.map { |r| [dimension_def[:label_method]&.call(r[:value]) || r[:value], r[:value]] } end values = result_sets.inject(&:+).uniq values.sort! if dimension_def[:queries].size > 1 values.reverse! if dimension_def[:reverse] values end end |
.list_includes(list_includes) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 72 def list_includes(list_includes) self.c_list_includes = list_includes.flatten end |
.list_order(list_order) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 76 def list_order(list_order) self.c_list_order = list_order end |
.make_conditions(search_filter) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 181 def make_conditions(search_filter) includes = c_base_includes.dup if search_filter condition_strings = [] condition_values = [] filter_texts = [] search_filter.each do |field, values| dimension_def = c_dimension_defs[field] raise "Unknown filter field: #{field.inspect}" if dimension_def.nil? values = Array(values) if dimension_def[:interval] values *= 2 if values.size == 1 raise "Need 2 values for interval filter: #{values.inspect}" if values.size != 2 if values[0].present? && values[1].present? condition_strings << "#{dimension_def[:select_expression]} BETWEEN ? AND ?" condition_values += values filter_texts << <<~TEXT #{dimension_def[:pretty_name]} #{dimension_def[:label_method]&.call(values) || "from #{values[0]} to #{values[1]}"} TEXT elsif values[0].present? condition_strings << "#{dimension_def[:select_expression]} >= ?" condition_values << values[0] filter_texts << "#{dimension_def[:pretty_name]} #{dimension_def[:label_method]&.call(values) || "from #{values[0]}"}" elsif values[1].present? condition_strings << "#{dimension_def[:select_expression]} <= ?" condition_values << values[1] filter_texts << "#{dimension_def[:pretty_name]} #{dimension_def[:label_method]&.call(values) || "to #{values[1]}"}" end includes << dimension_def[:includes] if dimension_def[:includes] else condition_strings << values.map do |value| if dimension_def[:condition_values_method] condition_values += dimension_def[:condition_values_method].call(value) else condition_values << value end filter_texts << "#{dimension_def[:pretty_name]} #{dimension_def[:label_method]&.call(value) || value}" includes << dimension_def[:includes] if dimension_def[:includes] "(#{dimension_def[:select_expression]}) = ?" end.join(' OR ') end end filter_text = filter_texts.join(' and ') conditions = [condition_strings.map { |c| "(#{c})" }.join(' AND '), *condition_values] includes.keep_if(&:present?).uniq! else filter_text = nil conditions = nil end conditions = nil if conditions == [''] [conditions, filter_text, includes] end |
.make_join(joins, model, include, model_class = model.to_s.camelize.constantize) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 240 def make_join(joins, model, include, model_class = model.to_s.camelize.constantize) case include when Array include.map { |i| make_join(joins, model, i) }.join(' ') when Hash sql = +'' include.each do |parent, child| sql << " #{make_join(joins, model, parent)}" ass = model.to_s.camelize.constantize.reflect_on_association parent sql << " #{make_join(joins, parent, child, ass.class_name.constantize)}" end sql when Symbol return '' if joins.include?(include) joins = joins.dup joins << include ass = model_class.reflect_on_association include raise "Unknown association: #{model} => #{include}" unless ass model_table = model.to_s.pluralize include_table = ass.table_name include_alias = include.to_s.pluralize case ass.macro when :belongs_to "LEFT JOIN #{include_table} #{include_alias} ON #{include_alias}.id = #{model_table}.#{include}_id" when :has_one, :has_many fk_col = ass.[:foreign_key] || "#{model}_id" sql = +"LEFT JOIN #{include_table} #{include_alias} ON #{include_alias}.#{fk_col} = #{model_table}.id" sql << " AND #{include_alias}.deleted_at IS NULL" if ass.klass.paranoid? if ass.scope && (ass_order = ScopeHolder.new(ass.scope).to_s) ass_order = ass_order.sub(/ DESC\s*$/i, '') ass_order_prefixed = ass_order.dup ActiveRecord::Base.connection.columns(include_table).map(&:name).each do |cname| ass_order_prefixed.gsub!(/\b#{cname}\b/, "#{include_alias}.#{cname}") end paranoid_clause = 'AND t2.deleted_at IS NULL' if ass.klass.paranoid? # FIXME(uwe): Should we add "where" from the ScopeHolder here as well? Ref: DrilldownChanges#changes_for min_query = <<~SQL SELECT MIN(#{ass_order}) FROM #{include_table} t2 WHERE t2.#{fk_col} = #{model_table}.id #{paranoid_clause} SQL sql << " AND #{ass_order_prefixed} = (#{min_query})" end sql else raise "Unknown association type: #{ass.macro}" end when String include when nil '' else raise "Unknown join class: #{include.inspect}" end end |
.select(select) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 68 def select(select) self.c_select = select end |
.summary_fields(*summary_fields) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 84 def summary_fields(*summary_fields) self.c_summary_fields = summary_fields.flatten end |
.target_class(target_class) ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 64 def target_class(target_class) self.c_target_class = target_class end |
Instance Method Details
#choices ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 376 def choices @search = new_search_object dimension_name = params[:dimension_name] dimension = c_dimension_defs[dimension_name] selected = @search.filter[dimension_name] || [] raise "Unknown dimension #{dimension_name.inspect}: #{c_dimension_defs.keys.inspect}" unless dimension choices = [[t(:all), nil]] + (legal_values_for_dimension(dimension) || []) choices_html = choices.map do |c| %(<option value="#{c[1]}"#{' SELECTED' if selected.include?(c[1])}>#{c[0]}</option>) end.join("\n") render html: choices_html.html_safe end |
#excel_export ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 395 def excel_export index(false) set_excel_headers if params.dig(:search, :list) == '1' @records = get_records(@result) render template: '/drilldown/excel_export_records', layout: false else render template: '/drilldown/excel_export', layout: false end end |
#excel_export_records ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 406 def excel_export_records params[:search] ||= {} params[:search][:list] = '1' excel_export end |
#html_export ⇒ Object
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# File 'lib/simple_drilldown/controller.rb', line 390 def html_export index(false) render template: '/drilldown/html_export', layout: '../drilldown/print' end |
#index(do_render = true) ⇒ Object
?dimension=supplier&dimension=transaction_type& filter=2009&filter[0]=Shell&filter[1]=Statoil
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# File 'lib/simple_drilldown/controller.rb', line 304 def index(do_render = true) @search = new_search_object @transaction_fields = (@search.fields + (c_fields.keys.map(&:to_s) - @search.fields)) select = c_select.dup includes = c_base_includes.dup @dimensions = [] select << ", 'All'#{'::text' if c_target_class.connection.adapter_name == 'PostgreSQL'} as value0" @dimensions += @search.dimensions.map do |dn| raise "Unknown distribution field: #{dn.inspect}" if c_dimension_defs[dn].nil? c_dimension_defs[dn] end @dimensions.each_with_index do |d, i| select << ", #{d[:select_expression]} as value#{i + 1}" includes << d[:includes] if d[:includes] end conditions, @filter_text, filter_includes = self.class.make_conditions(@search.filter) includes += filter_includes includes.keep_if(&:present?).uniq! if @search.order_by_value && @dimensions.size <= 1 order = case @search.select_value when Search::SelectValue::VOLUME 'volume DESC' when Search::SelectValue::VOLUME_COMPENSATED 'volume_compensated DESC' when Search::SelectValue::COUNT 'count DESC' else 'count DESC' end else order = (1..@dimensions.size).map { |i| "value#{i}" }.join(',') order = nil if order.empty? end group = (c_base_group + (1..@dimensions.size).map { |i| "value#{i}" }).join(',') group = nil if group.empty? joins = self.class.make_join([], c_target_class.name.underscore.to_sym, includes) rows = c_target_class.unscoped.where(c_base_condition).select(select).where(conditions) .joins(joins) .group(group) .order(order).to_a if rows.empty? @result = { value: 'All', count: 0, row_count: 0, nodes: 0, rows: [] } c_summary_fields.each { |f| @result[f] = 0 } else if do_render && @search.list && rows.inject(0) { |sum, r| sum + r[:count].to_i } > LIST_LIMIT @search.list = false flash.now[:notice] = "More than #{LIST_LIMIT} records. List disabled." end @result = result_from_rows(rows, 0, 0, ['All']) end remove_duplicates(@result) unless c_base_group.empty? @remaining_dimensions = c_dimension_defs.dup @remaining_dimensions.each_key do |dim_name| if (@search.filter[dim_name] && @search.filter[dim_name].size == 1) || (@dimensions.any? { |d| d[:url_param_name] == dim_name }) @remaining_dimensions.delete(dim_name) end end populate_list(conditions, includes, @result, []) if @search.list render template: '/drilldown/index' if do_render end |