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35 lines
1.1 KiB
35 lines
1.1 KiB
import {Instantiable} from '../di'
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import {FormRequest} from './FormRequest'
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import {ValidationError} from './Validator'
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import {ResponseObject, RouteHandler} from "../http/routing/Route";
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import {Request} from "../http/lifecycle/Request";
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/**
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* Builds a middleware function that validates a request's input against
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* the given form request class and registers the FormRequest class into
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* the request container.
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*
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* @example
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* ```typescript
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* Route.group(...).pre(formRequest(MyFormRequestClass))
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* ```
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*
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* @param formRequestClass
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*/
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export function formRequest<T>(formRequestClass: Instantiable<FormRequest<T>>): RouteHandler {
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return async function formRequestRouteHandler(request: Request): Promise<ResponseObject> {
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const formRequestInstance = <FormRequest<T>> request.make(formRequestClass)
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try {
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await formRequestInstance.get()
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request.registerSingletonInstance<FormRequest<T>>(formRequestClass, formRequestInstance)
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} catch (e: unknown) {
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if ( e instanceof ValidationError ) {
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return e.errors.toJSON()
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}
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throw e
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}
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}
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}
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