Validating File Uploads

The video tutorial covers file validation for server uploads, focusing on restricting file size and type using Multer. It demonstrates setting size limits in bytes and filtering file types with file filters. The tutorial includes testing these restrictions using Postman and introduces regular expressions for handling multiple file extensions. The video aims to equip viewers with the skills to implement robust file validation in their applications.

What is the function of the 'file filter' in multer?

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How can you customize the error message returned when a file type is not accepted?

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What steps should be taken to ensure that a file upload is successful?

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What regular expression can be used to accept both .doc and .docx file extensions?

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