keystonejs/keystone-classic

keystonejs 4 beta file system storage adapter image preview

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#3781 opened on Dec 11, 2016

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discussionhelp wanted

Description

I want preview the upload file that is image

Gallery.add({
	name: { type: String, required: true },
	publishedDate: { type: Date, default: Date.now },
	image: { 
		type: Types.File, 
		storage: storage,
		format: function(item, file){
			return '<pre>'+JSON.stringify(file, false, 2)+'</pre>'+
				'<img src="'+file.url+'" style="max-width: 300px">'
		}
	},
});

I think i can not use the format function , because it is old function for ver 3 how can i do it

Contributor guide

Tech stack
javascriptnodejs
Domain
backend
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
KeystoneJS basicsNode.js
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
This issue asks about adding image preview functionality for the file system storage adapter in KeystoneJS 4 beta. The user attempted to use a v3 format function which is not supported. To resolve, investigate Keystone 4's file field configuration options and available hooks. Check the storage adapter documentation and see if custom render functions or post save hooks can achieve image preview. No linked PRs or maintainer guidance exist; the fix would require reading the source code of keystone classic's file field.