JSPM – sequelize-smartapi@0.1.7

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sequelize-smartapi

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Readme

sequelize-smartapi is a library to generate CURD actions for expressjs from sequelize models.

Install

npm install sequelize-smartapi --save

Usage

const models = require('./models')
const smartApi = require('sequelize-smartapi')(models)

smartApi.getList(model, [options])

return an expressjs middleware to process a list query

the first model parameter is a string of model's name defined in sequlize model file.

The following table describes the properties of the optional options object.

Property	Description	Type	Default
cb
scopes
include
searchColumns

the database query is controled by url query parameters, default paramenters are described as follow:

GET /students

would be converted to database query:

select * 
from students 
order by createdAt desc 
limit 0, 200

you can changed the default behaviour by specify the url query paramters as:

GET /students?limit=10&start=11&sortColumn=birthDate&sortOrder=asc

would be converted to database query:

select * 
from students 
order by birthDate asc 
limit 11, 10

other supported query methods includes:

filter rows by specific column(s) with specific value

GET /students?classId=1

would be converted to a database query:

select * 
from students 
where classId = 1
order by createdAt desc
limit 200

you can specified more than one column:

GET /students?classId=1&sex=1

would be converted to a database query:

select * 
from students 
where classId = 1 and sex = 1
order by createdAt desc
limit 200

filter rows by specific column(s) with list values

GET /students?classIds=1&classIds=2&classIds=3

would be converted to a database query:

select * 
from students 
where classId in (1, 2, 3)
order by createdAt desc
limit 200

you can also specific a column with an empty value, which would be converted to a is null query in database

GET /students?classIds=1&classIds=2&classIds=3&classIds=

would be converted to a database query:

select * 
from students 
where classId in (1, 2, 3) or classId is null
order by createdAt desc
limit 200

参数说明：

名称	是否必填	类型	说明	适用的方法
Model	必填	string类型	model对象的名字	post，get，getList，patch，delete，putStatus
options	选填	Object类型
option.cb	选填	function (req,entry)	对从数据库获得的实例数据进行处理之后再返回，entry为实例数据	post，get，getList｜
options.scopes	选填	Object，{name: 'columnName'}	主要用于界定从数据库返回的模型实例的值的范围,eg:smartApi.get('model',{scopes:{name:'isEnable'}}),表示查询有效的数据	get,getList
options.include	选填	Object,[{model:'modelName'}]	用来进行表的join,多个表join要进行嵌套	get,getList
options.searchColumns	选填	Array类型（待定，因为没有使用过，不确定，哈哈哈）	指定页面传入的搜索关键词所适用的列	getList

返回的res有两种情况： {error: 0, data: entry}　返回查询结果 {error: 404, data: {}, errorMsg: '无此记录'}

getList -查询数据

getList(Model, options={})

根据传入的参数条件，返回对应的所有数据，默认无参数时查询整个表数据

返回：
{error: 0, data: entries, totalRecords: totalRecords}
entries:查询到的所有数据
totalRecords：查询到的数据量

post - 新增数据，可以处理一个实例对象或包含多个实例对象的数组

post(Model, options={})

返回的res有三种情况：
{error:0,data:entry}，表示新增成功，entry返回新建的数据
{error: 404, data:{}, errorMsg: '添加数据失败'}，表示没有新建数据或者数据添加失败
{error：500，errorMsg：‘系统错误’}，表示代码异常

patch - 通过指定的主键id更新对应的数据

patch(Model, option={})

返回的res有两种情况：
{error: 404, errorMsg: '无此数据'}
{error: 0, data: {affectedRows: affectRows}, 返回影响的行数

delete - 通过指定的主键ｉｄ删除对应的数据

delete(Model,options={})

删除操作并没有真实的删除数据库表中的数据，只是将表中的isEnable更新为false，即无效不可用，实现理论上的删除

返回的res有两种情况：
{error: 404, errorMsg: '无此数据'}
{error: 0, data: {affectedRows: affectRows}, 返回影响的行数

putStatus - 更新状态（待补充）

getList 支持 in

for example:

http://localhost:3000/users?groupId=[1, 2, null]

this will change the query to:

select * from users where groupId in (1, 2) or groupId is null;