[英]Cannot read property 'count' of undefined Express API
When i call Create Option api it is working fine but when i call list api get error: Cannot read property 'count' of undefined Express (Node + MongoDB) API.here is my Option Controller File code.当我调用 Create Option api 时,它工作正常,但是当我调用 list api 时出现错误:无法读取未定义 Express(节点 + MongoDB)API 的属性“计数”。这是我的选项控制器文件代码。 i have Log DB.ProductDoption ,getting result but count function not working.
我有 Log DB.ProductDoption ,得到结果但计数功能不起作用。
const _ = require('lodash');
const Joi = require('joi');
exports.create = async (req, res, next) => {
try {
const validateSchema = Joi.object().keys({
name: Joi.string().required(),
key: Joi.string().required(),
description: Joi.string().allow(['', null]).optional(),
options: Joi.array().items(Joi.object().keys({
key: Joi.string().required(),
displayText: Joi.string().required()
})).required()
});
const validate = Joi.validate(req.body, validateSchema);
if (validate.error) {
return next(PopulateResponse.validationError(validate.error));
}
const key = Helper.String.createAlias(req.body.key);
console.log(DB.ProductDoption);
const count = await DB.ProductDoption.count({ key });
if (count || validate.value.key === '_custom') {
return next(PopulateResponse.error({
message: 'Please add unique name for key'
}));
}
const option = new DB.ProductDoption(validate.value);
await option.save();
res.locals.option = option;
return next();
} catch (e) {
return next(e);
}
};
exports.list = async (req, res, next) => {
const page = Math.max(0, req.query.page - 1) || 0; // using a zero-based page index for use with skip()
const take = parseInt(req.query.take, 10) || 10;
try {
const query = Helper.App.populateDbQuery(req.query, {
text: ['name', 'key', 'description']
});
const sort = Helper.App.populateDBSort(req.query);
const count = await DB.ProductDoption.count(query);
const items = await DB.ProductDoption.find(query)
.collation({ locale: 'en' })
.sort(sort).skip(page * take)
.limit(take)
.exec();
res.locals.optionList = {
count,
items
};
next();
} catch (e) {
next(e);
}
};
collection.count is deprecated, and will be removed in a future version. collection.count 已弃用,将在未来版本中删除。 Use Collection.countDocuments or Collection.estimatedDocumentCount instead
改用 Collection.countDocuments 或 Collection.estimatedDocumentCount
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