Strongloop 环回验证和请求生命周期

Question

我想在模型保存到数据库之前更新模型，验证发生后。

环回请求生命周期中的正确点是什么（呃哦，这让我想起了 .NET webforms！）来做到这一点？

Report.validatesPresenceOf('basicInfo');
Report.beforeRemote('create', addCreatorId);

function addCreatorId(ctx, instance, next) {
    // alter the model, validation has not occurred yet
}

Report.observe('before save', sendToThirdParty);

function sendToThirdParty(ctx, instance, next) {
    // send contents to third party, alter model with response
    // validation has not occurred yet
}

Report.afterRemote('create', sendEmail);

function sendEmail(ctx, record, next) { 
    // model has been saved to the database
    // validation occurs before this point
}

理想情况下，我希望在调用 addCreatorId 和 sendToThirdParty 函数之前触发默认环回模型验证。我应该怎么做？

我可以清楚地在我的 before save 挂钩中调用 model.isValid()，但似乎我应该能够重新排列它们以便自动发生。

环回 Operation Hooks documentation doesn't mention when validation occurs, nor do the Remote Hooks 文档。

Answer 1

"I want to update a model before it's saved to the database, after validation has occurred." 我有解决方案。在验证之后和将数据保存到数据库之前调用的环回中使用 'persist' 挂钩。您可以使用其 'ctx.data' 参数插入或更改您想要的任何数据。希望它有所帮助，虽然有点晚了！ Link: https://loopback.io/doc/en/lb3/Operation-hooks.html#persist

Strongloop 环回验证和请求生命周期

Strongloop loopback validation and request lifecycle

javascript

validation

node.js

strongloop

loopbackjs