[FIX] do not use for...in to iterate on arrays, avoid using it to iterate on object as well. Use _.each in either cases. See doc for rationale
bzr revid: xmo@openerp.com-20110617115226-21meg23d0tg43wgv
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@ -39,17 +39,18 @@ openerp.base_graph.GraphView = openerp.base.Controller.extend({
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this.group_field = '';
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this.orientation = this.fields_view.arch.attrs.orientation || '';
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for(var fld in this.fields_view.arch.children) {
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if (this.fields_view.arch.children[fld].attrs.operator) {
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this.operator.push(this.fields_view.arch.children[fld].attrs.name);
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_.each(this.fields_view.arch.children, function (field) {
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if (field.attrs.operator) {
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this.operator.push(field.attrs.name);
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}
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else if (this.fields_view.arch.children[fld].attrs.group) {
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this.group_field = this.fields_view.arch.children[fld].attrs.name;
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else if (field.attrs.group) {
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this.group_field = field.attrs.name;
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}
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else {
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this.chart_info_fields.push(this.fields_view.arch.children[fld].attrs.name);
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this.chart_info_fields.push(field.attrs.name);
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}
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}
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}, this);
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this.operator_field = this.operator[0];
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if(this.operator.length > 1){
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this.operator_field_one = this.operator[1];
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@ -80,53 +81,53 @@ openerp.base_graph.GraphView = openerp.base.Controller.extend({
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}
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},
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schedule_chart: function(result) {
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schedule_chart: function(results) {
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this.$element.html(QWeb.render("GraphView", {"fields_view": this.fields_view, "chart": this.chart,'view_id': this.view_id}));
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this.opration_fld = {};
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if (result.length){
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for(var res in result) {
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for(var fld in result[res]) {
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if (typeof result[res][fld] == 'object') {
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result[res][fld] = result[res][fld][result[res][fld].length - 1];
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if (results.length){
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_.each(results, function (result) {
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_.each(result, function (field_value, field_name) {
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if (typeof field_value == 'object') {
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result[field_name] = field_value[field_value.length - 1];
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}
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if (typeof result[res][fld] == 'string'){
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if (this.all_fields[fld]['selection']){
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for (var i in this.all_fields[fld]['selection']){
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if(result[res][fld] == this.all_fields[fld]['selection'][i][0]){
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result[res][fld] = this.all_fields[fld]['selection'][i];
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}
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if (typeof field_value == 'string'){
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var choices = this.all_fields[field_name]['selection'];
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_.each(choices, function (choice) {
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if(field_value == choice[0]){
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result[field_name] = choice;
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}
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}
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});
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}
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}
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}
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}, this);
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}, this);
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for (var j in result){
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var gen_key = result[j][this.chart_info_fields]+"_"+result[j][this.group_field];
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_.each(results, function (result) {
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var gen_key = result[this.chart_info_fields]+"_"+result[this.group_field];
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if (this.opration_fld[gen_key] == undefined){
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var map_val = {};
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map_val[this.operator_field] = result[j][this.operator_field];
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map_val[this.operator_field] = result[this.operator_field];
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if (this.operator.length > 1){
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map_val[this.operator_field_one] = result[j][this.operator_field_one];
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map_val[this.operator_field_one] = result[this.operator_field_one];
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}
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map_val[this.chart_info_fields] = result[j][this.chart_info_fields];
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map_val[this.chart_info_fields] = result[this.chart_info_fields];
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if (this.group_field){
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map_val[this.group_field] = (typeof result[j][this.group_field] == 'object')?result[j][this.group_field][1]:result[j][this.group_field];
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map_val[this.group_field] = (typeof result[this.group_field] == 'object')?result[this.group_field][1]:result[this.group_field];
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}
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this.opration_fld[gen_key] = map_val;
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}else{
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} else {
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map_val = this.opration_fld[gen_key];
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map_val[this.operator_field] += result[j][this.operator_field];
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map_val[this.operator_field] += result[this.operator_field];
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if (this.operator.length > 1){
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map_val[this.operator_field_one] += result[j][this.operator_field_one];
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map_val[this.operator_field_one] += result[this.operator_field_one];
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}
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this.opration_fld[gen_key] = map_val;
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}
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}
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}, this);
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var graph_data = [];
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for (var op in this.opration_fld){
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graph_data.push(this.opration_fld[op]);
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}
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_.each(this.opration_fld, function (column_data) {
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graph_data.push(column_data);
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});
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if(this.chart == 'bar') {
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return this.schedule_bar(graph_data);
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@ -136,14 +137,14 @@ openerp.base_graph.GraphView = openerp.base.Controller.extend({
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}
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},
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schedule_bar: function(result) {
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schedule_bar: function(results) {
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var self = this;
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var view_chart = '';
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var xystr = {};
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var xyname = {};
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var res = [];
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this.group_list = [];
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var newkey = '';
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var newkey = '', newkey_one;
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var COLOR_PALETTE = ['#cc99ff', '#ccccff', '#48D1CC', '#CFD784', '#8B7B8B', '#75507b', '#b0008c', '#ff0000', '#ff8e00', '#9000ff', '#0078ff', '#00ff00', '#e6ff00', '#ffff00',
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'#905000', '#9b0000', '#840067', '#9abe00', '#ffc900', '#510090', '#0000c9', '#009b00',
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@ -156,69 +157,70 @@ openerp.base_graph.GraphView = openerp.base.Controller.extend({
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view_chart = self.orientation == 'horizontal'? 'barH' : 'bar';
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}
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for (var i in result){
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_.each(results, function (result) {
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if (self.group_field && (this.operator.length <= 1)){
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newkey =result[i][self.group_field].split(' ').join('_');
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}else{
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newkey = result[self.group_field].split(' ').join('_');
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} else {
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newkey = "val";
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}
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if (jQuery.inArray(newkey, self.group_list) == -1){
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self.group_list.push(newkey);
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if(this.operator.length > 1){
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var newkey_one = "val1";
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newkey_one = "val1";
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self.group_list.push(newkey_one);
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}
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}
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}
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}, this);
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for (var j in result){
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var xystring = result[j][self.chart_info_fields];
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_.each(results, function (result) {
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var xystring = result[self.chart_info_fields];
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if (self.group_field && (self.operator.length <= 1)){
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newkey =result[j][self.group_field].split(' ').join('_');
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newkey = result[self.group_field].split(' ').join('_');
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}else{
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newkey = "val";
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}
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if (xystr[xystring] == undefined){
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xyname = {};
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xyname[self.chart_info_fields] = xystring;
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for (var k in self.group_list){
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xyname[self.group_list[k]] = 0.0001;
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}
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xyname[newkey] = result[j][self.operator_field];
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_.each(self.group_list, function (group) {
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xyname[group] = 0.0001;
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});
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xyname[newkey] = result[self.operator_field];
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if (self.operator.length > 1){
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xyname[newkey_one] = result[j][self.operator_field_one];
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xyname[newkey_one] = result[self.operator_field_one];
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}
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xystr[xystring] = xyname;
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}
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else{
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xyname = {};
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xyname = xystr[xystring];
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xyname[newkey] = result[j][self.operator_field];
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xyname[newkey] = result[self.operator_field];
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if (self.operator.length > 1){
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xyname[newkey_one] = result[j][self.operator_field_one];
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xyname[newkey_one] = result[self.operator_field_one];
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}
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xystr[xystring] = xyname;
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}
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}
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for (var label in xystr){
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res.push(xystr[label]);
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}
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});
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_.each(xystr, function (column_data) {
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res.push(column_data);
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});
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//for legend color
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var grp_color = [];
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for (var l in self.group_list){
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_.each(self.group_list, function (group_legend, index) {
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var legend = {};
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if (self.group_list[l] == "val"){
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if (group_legend == "val"){
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legend['text'] = self.fields[self.operator_field]['string']
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}else if(self.group_list[l] == "val1"){
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}else if(group_legend == "val1"){
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legend['text'] = self.fields[self.operator_field_one]['string']
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}else{
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legend['text'] = self.group_list[l];
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legend['text'] = group_legend;
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}
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legend['color'] = COLOR_PALETTE[l];
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legend['color'] = COLOR_PALETTE[index];
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grp_color.push(legend);
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}
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});
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//for axis's value and title
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var temp_ax = {};
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@ -83,6 +83,91 @@ should *never* use trailing commas in Javascript object literals:
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in object literals puts you at risks of using them in literal JSON strings
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as well (though there are few reasons to write JSON by hand)
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*Never* use ``for … in`` to iterate on arrays
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*********************************************
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:ref:`Iterating over an object with for…in is a bit tricky already
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<for-in-iteration>`, it is far more complex than in Python (where it Just
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Works™) due to the interaction of various Javascript features, but to iterate
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on arrays it becomes downright deadly and errorneous: ``for…in`` really
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iterates over an *object*'s *properties*.
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With an array, this has the following consequences:
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* It does not necessarily iterate in numerical order, nor does it iterate in
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any kind of set order. The order is implementation-dependent and may vary
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from one run to the next depending on a number of reasons and implementation
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details.
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* If properties are added to an array, to ``Array.prototype`` or to
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``Object.prototype`` (the latter two should not happen in well-behaved
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javascript code, but you never know...) those properties *will* be iterated
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over by ``for…in``. While ``Object.hasOwnProperty`` will guard against
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iterating prototype properties, they will not guard against properties set
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on the array instance itself (as memoizers for instance).
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Note that this includes setting negative keys on arrays.
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For this reason, ``for…in`` should **never** be used on array objects. Instead,
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you should use either a normal ``for`` or (even better, unless you have
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profiled the code and found a hotspot) one of Underscore's array iteration
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methods (`_.each`_, `_.map`_, `_.filter`_, etc...).
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Underscore is guaranteed to be bundled and available in OpenERP Web scopes.
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.. _for-in-iteration:
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Use ``hasOwnProperty`` when iterating on an object with ``for … in``
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********************************************************************
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``for…in`` is Javascript's built-in facility for iterating over and object's
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properties.
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`It is also fairly tricky to use`_: it iterates over *all* non-builtin
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properties of your objects [#]_, which includes methods of an object's class.
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As a result, when iterating over an object with ``for…in`` the first line of
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the body *should* generally be a call to `Object.hasOwnProperty`_. This call
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will check whether the property was set directly on the object or comes from
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the object's class:
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.. code-block:: javascript
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for(var key in ob) {
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if (!ob.hasOwnProperty(key)) {
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// comes from ob's class
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continue;
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}
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// do stuff with key
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}
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Since properties can be added directly to e.g. ``Object.prototype`` (even
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though it's usually considered bad style), you should not assume you ever know
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which properties ``for…in`` is going to iterate over.
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An alternative is to use Underscore's iteration methods, which generally work
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over objects as well as arrays:
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Instead of
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.. code-block:: javascript
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for (var key in ob) {
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if (!ob.hasOwnProperty(key)) { continue; }
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var value = ob[key];
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// Do stuff with key and value
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}
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you could write:
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.. code-block:: javascript
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_.each(ob, function (value, key) {
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// do stuff with key and value
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});
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and not worry about the details of the iteration: underscore should do the
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right thing for you on its own [#]_.
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Writing documentation
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+++++++++++++++++++++
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@ -294,6 +379,30 @@ Roadmap
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Release notes
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+++++++++++++
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.. [#] More precisely, it iterates over all *enumerable* properties. It just
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happens that built-in properties (such as ``String.indexOf`` or
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``Object.toString``) are set to non-enumerable.
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The enumerability of a property can be checked using
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`Object.propertyIsEnumeable`_.
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Before ECMAScript 5, it was not possible for user-defined properties
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to be non-enumerable in a portable manner. ECMAScript 5 introduced
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`Object.defineProperty`_ which lets user code create non-enumerable
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properties (and more, read-only properties for instance, or implicit
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getters and setters). However, support for these is not fully complete
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at this point, and they are not being used in OpenERP Web code anyway.
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.. [#] While using underscore is generally the preferred method (simpler,
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more reliable and easier to write than a *correct* ``for…in``
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iteration), it is also probably slower (due to the overhead of
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calling a bunch of functions).
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As a result, if you profile some code and find out that an underscore
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method adds unacceptable overhead in a tight loop, you may want to
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replace it with a ``for…in`` (or a regular ``for`` statement for
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arrays).
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.. [#] Because Python is the default domain, the ``py:`` markup prefix
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is optional and should be left out.
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@ -326,3 +435,17 @@ Release notes
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http://code.google.com/p/jsdoc-toolkit/
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.. _John Resig's Class implementation:
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http://ejohn.org/blog/simple-javascript-inheritance/
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.. _\_.each:
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http://documentcloud.github.com/underscore/#each
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.. _\_.map:
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http://documentcloud.github.com/underscore/#map
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.. _\_.filter:
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http://documentcloud.github.com/underscore/#select
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.. _It is also fairly tricky to use:
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https://developer.mozilla.org/en/JavaScript/Reference/Statements/for...in#Description
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.. _Object.propertyIsEnumeable:
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https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/propertyIsEnumerable
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.. _Object.defineProperty:
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https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/defineProperty
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.. _Object.hasOwnProperty:
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https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Object/hasOwnProperty
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