Nest: FileInterceptors does not support different field names

[thg303]

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Current behavior

there are two interceptors FileInterceptor and FilesInterceptor based on multer.uploadSingle and multer.uploadArray. they allow uploading a single file, or multiple files with same field name. however if say there is a form with two different filed name to be uploaded. like "avatar" and "passport". currently there is not support for multer.fields which addresses this requirement.

Expected behavior

based on current implementation, I suggest adding a new interceptor for this behaviour to "@nestjs/common" like:

import {FileFieldsInterceptor} from '@nest/common';

@UseInterceptors(FileFieldsInterceptor([{name: 'avatar', maxCount: 1}, {name: 'passport', maxCount: 1}]))
/...

[kamilmysliwiec]

Hi @thg303,
Good idea! Are you interested in creating a PR? If not, I'll ship it soon anyway 👍

[thg303]

here's my PR. please check it out. please let me know if there's anything missed/wrong about it.

[kamilmysliwiec]

PR merged. Leaving opened to remember about the docs

[kamilmysliwiec]

Added in the v5.1.0 release.

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