我遇到了一个问题,我可以访问与我的猫鼬模型对象相关联的记录,但我无法使用点表示法访问记录的属性。出于某种原因,我可以获得记录,但是当我尝试使用点符号来获取记录特定属性时,我得到undefined
。
这是我的模特:
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var imageSchema = new Schema({
pattern: { type: String, enum: ['solid', 'stripe', 'plaid'] },
color: { type: String, enum: ['grey', 'navy-blue', 'black', 'khaki', 'brown'] },
imageName: String,
imageUrl: String,
imageSource: String
});
var Images = mongoose.model('Images', imageSchema);
module.exports = Images;
这是我的路线定义:
router.get('/:pattern/:color/result', function(req, res){
console.log(req.params.color);
Images.find( { pattern: req.params.pattern, color: req.params.color }, function(err, image){
if (err) { console.log(err); }
console.log(image);
console.log(image.pattern);
res.render('pages/result.hbs', {
pattern : req.params.pattern,
color : req.params.color,
image : image
});
});
});
console.log(image)检索如下记录:
[ { _id: 55e35b3b9bd509dbc0b46c79,
pattern: 'solid',
color: 'navy-blue',
imageName: 'blueshirtesrsasdfff.jpg',
imageUrl: 'https://imageurl.com',
imageSource: 'source.com' } ]
console.log(image.pattern)检索此响应:
undefined
我在哪里犯了错误并致电特定财产?
答案 0 :(得分:3)
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.DataSourcesRaster;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.SystemUI;
using Geoway.ADF.GIS.OpenDataDialog;
using Geoway.ADF.MIS.Core.Public.interfaces;
using Geoway.ADF.MIS.Core.Public.util;
using Geoway.ADF.MIS.Utility.Core;
using Geoway.ADF.MIS.Utility.Log;
using System;
using System.Collections;
using System.Data;
using System.Globalization;
using System.IO;
using System.Windows.Forms;
namespace Geoway.ADF.GIS.CheckerUI
{
public class MapManager
{
private AxMapControl m_MapControl;
private ICommand pControlsMapFullExtentCommand;
private ICommand pControlsMapPanTool;
private ICommand pControlsMapZoomInTool;
private ICommand pControlsMapZoomOutTool;
private ICommand pControlsMapPreViewCommand;
private ICommand pControlsMapNextViewCommand;
public ISimpleCallBack simAxisCallBack;
public ISimpleCallBack simSelCallBack;
private NumberFormatInfo nfi4 = ConvertUtil.GetNumFormatInfo(4);
private ArrayList m_lstFeatureClass;
private ArrayList m_lstRasterDataset;
private Form parentForm;
public AxMapControl MapControl
{
get
{
if (this.m_MapControl == null)
{
this.m_MapControl = new AxMapControl();
}
return this.m_MapControl;
}
set
{
this.m_MapControl = value;
}
}
返回一个元素数组(您可以通过console.log中图像对象周围的方括号来表示)。如果您想让查询保持一致,您实际上需要使用.find
。
或者,您可以使用image[0].pattern
,如此
Images.findOne