npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@gigster/module-loopback-file-upload

v1.2.3

Published

Role | Name | Email | Slack ---- | ---- | ----- | ----- *Product Owner* | Frances Haugen | [[email protected]](mailto:[email protected]) | [@frances] *Maintainer* | Jerome Curlier | [[email protected]](mailto:[email protected]) | [@jerome] *Contribu

Downloads

54

Readme

loopback-file-upload

Role | Name | Email | Slack ---- | ---- | ----- | ----- Product Owner | Frances Haugen | [email protected] | [@frances] Maintainer | Jerome Curlier | [email protected] | [@jerome] Contributor | Samuel Gordalina | [email protected] | [@sam]

Overview

This module provides file upload for Loopback.

The module is using the Loopback Storage component. Please therefore review this component documentation to learn about this module.

The LoopBack storage component makes it easy to upload and download files to cloud storage providers and the local (server) file system.

  • Amazon
  • Azure
  • Google Cloud
  • Openstack
  • Rackspace
  • Local filesytem

Usage

  - name: loopback-file-upload
    location: 'npm:@gigster/[email protected]'
    spec:
      minSize: 0
      maxSize: 20971520
      storage: filesystem
      containerName: uploads

Specification

Name | Status ---- | ----- containerName | the name of the folder or bucket to store the files into. minSize | Minimum size of the file in bytes. maxSize | Maximum size of the file in bytes. storage | Which storage to use for the component, currently filesystem and amazonS3 are supported.

Uploadable model definition

A model is uploadable when it has the file-upload.uploadable tag.

By default, the uploadable model should have the following attributes.

Name | Status ---- | ----- filename | the uniquely generated filename. displayName | the original file name. url | the URL location to download the file. size | the size of the file in bytes. mimeType | the mime type for the file. created | the date/time the file was uploaded.

Note: if you would like to change the list of attributes, you will need to update the uploader mixin generated code. The method storeFile is returning the upload object to be stored for the uploaded file.

This is an example of a uploadable model.

name: upload
public: false
properties:
  - name: filename
    type: string
  - name: displayName
    type: string
  - name: url
    type: string
  - name: size
    type: number
  - name: mimeType
    type: string
  - name: created
    type: date
relations:
  - name: profilePhoto
    type: hasOne
    model: user
    foreignKey: profilePhotoId
  - name: userPhotos
    type: hasMany
    model: user
    through: userPhoto
    foreignKey: photoId
  - name: productDocument
    type: hasMany
    model: product
    through: productDocument
    foreignKey: documentId
tags:
  - file-upload.uploadable

Endpoints

The module create a POST endpoint for each relation to an uploadable model.

Endpoint | Method | Description ---- | ---- | ----- POST /model/relation/upload ( for example /user/profilePhoto/upload) | relationUpload | Uploads a file

The following information is returned for each uplodaded file.

{
	"filename": "ae99c364-0218-4a33-a5e3-3fdb6e07e817.json",
	"displayName": "workspace.json",
	"size": 148841,
	"lastModified": "2017-11-22T20:15:15.376Z",
	"url": "http://0.0.0.0:3000/storage/uploadsBucket/ae99c364-0218-4a33-a5e3-3fdb6e07e817.json",
	"id": 47
}

We can then display the file using the URL provided.

Sample CURL commands

curl --request POST \
  --url http://localhost:3000/api/users/1/profilePhoto/upload \
  --header 'content-type: multipart/form-data; boundary=---011000010111000001101001' \
  --form file=

Environment variables

Name | Description ---- | ----- GIG_MAX_UPLOAD_SIZE | Maximum size of the file (checked by the storage component) AWS_REGION | AWS region key when using AWS AWS_KEY | AWS key when using AWS AWS_SECRET_KEY | AWS secret key when using AWS

Dependencies

The loopback-file-upload depends on the loopback-models module. The loopback-models module should be defined before loopback-file-upload in the gig.yaml.

The following npm packages are used:

npm | version ---- | ----- loopback-component-storage | ^3.3.1

Generation

Mixin

The Uploader mixin is added to the project. The mixin attaches an upload method to each relation defined in the mixin configuration, handles the file upload to the storage and store the file information in the uploadable model.

Models

For each relation to a uploadable model, the module contributes the upload endpoint. The endpoint is attached to the model through a mixins configuration in the model json file.

For example:

  "Uploader": {
    "relations": [
      "profilePhoto",
      "photos"
    ]
  }

The module also disable methods related to the uploadble methods.

For a many relationship, the following methods are disabled:

  • prototype.__create__relation_name
  • prototype.__update__relation_name
  • prototype.__updateById__relation_name
  • prototype.__link__relation_name
  • prototype.__unlink__relation_name

Otherwise, for a one relationship:

  • prototype.__create__relation_name
  • prototype.__update__relation_name

where relation_name is the name of the relation.

For example, for a user model having one profile photo and many photos:

  "SetupRemoteMethods": {
    "disable": [
      "prototype.__create__profilePhoto",
      "prototype.__update__profilePhoto",
      "prototype.__create__photos",
      "prototype.__update__photos",
      "prototype.__updateById__photos",
      "prototype.__link__photos",
      "prototype.__unlink__photos"
    ]
  },

Configuration

The following configuration is added to the Loopback configuration.

  "upload": {
    "containerName": "uploadsBucket",
    "minSize": 0,
    "maxSize": 20971520
  }

This is based on the module configuration.

Storage

Filesystem

The file are stored under the folder name provided by the configuration in the storage folder. The default folder name is uploads.

The files are then available through the url http://0.0.0.0:3000/storage/uploads/unique-file-identifier.

AWS

The file are stored in the bucket provided by the configuration. The default folder name is uploads.

The files are then then available through the AWS url.

Troubleshooting

DEBUG=loopback:file-upload:* yarn start