Question

我在下面的链接中提到了设置环回框架和创建简单的API

https://docs.strongloop.com/display/public/LB/Getting+started+with+LoopBack

但是当我尝试将API连接到datasource时，我收到了以下错误，但没有找到原因以及如何解决它。请有人帮我解决这个问题。

Error: Cannot migrate models not attached to this datasource: CoffeeShop
    at /Users/emotian/Development/loopback-getting-started/node_modules/loopback-datasource-juggler/lib/datasource.js:822:14
    at nextTickCallbackWith0Args (node.js:420:9)
    at process._tickDomainCallback (node.js:390:13)
    at process.fallback (/Users/emotian/Development/loopback-getting-started/node_modules/loopback/node_modules/continuation-local-storage/node_modules/async-listener/index.js:450:15)
    at Function.Module.runMain (module.js:443:11)
    at startup (node.js:139:18)
    at node.js:968:3

Answer 1

确保先添加数据源，然后安装连接器。

lb datasource mysqlDb
npm install --save loopback-connector-mysql

如果一切正确

，请检查server / datasources.json

删除旧型号/ coffeeshop.js / json以防万一

然后运行

lb model

并选择新的数据源并添加所需的字段。

错误：无法迁移未附加到此数据源的模型：loopback-datasource-juggler

1 个答案: