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Context: As a user I want to be able to preview files from an S3 bucket thanks to secure signed urls. Example: I have a collection places that has a pictures field which is an array of strings containing the file name of files stored on a s3 bucket. In a smart field called s3pictures I return the value of calls made to S3 to get signed urls for the files whose name is present in the pictures field.

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Implementation

First you need to implement the function to get the signed urls from s3. We use the aws-sdk npm package to connect to the bucket storing the pictures. services/s3-helper.js You can then use the default file viewer widget settings to preview the pictures.