我的问题:如何将图像上传到S3并使用NodeJS保存到用户记录中,就像Rails回形针宝石一样。
我相信这应该是过程,但是我还是很困惑这个程序包应该如何工作:
user
我有一个rails postgres sql db,用户可以上传存储在S3中的图像,并用Paperclip gem重新格式化。存储方式如下:
irb(main):003:0> user.avatar
=> #<Paperclip::Attachment:0x000055b3e043aa50 @name=:avatar,
@name_string="avatar", @instance=#<User id: 1, email:
"example@gmail.com", created_at: "2016-06-11 22:52:36",
updated_at: "2019-06-16 17:17:16", first_name: "Clarissa",
last_name: "Jones", avatar_file_name: "two_people_talking.gif",
avatar_content_type: "image/gif", avatar_file_size: 373197,
avatar_updated_at: "2019-06-16 17:17:12", @options={:convert_options=>{},
:default_style=>:original, :default_url=>":style/missing.png",
:escape_url=>true, :restricted_characters=>/[&$+,\/:;=?@<>\[\]\
{\}\|\\\^~%# ]/, :filename_cleaner=>nil,
:hash_data=>":class/:attachment/:id/:style/:updated_at",
:hash_digest=>"SHA1", :interpolator=>Paperclip::Interpolations,
:only_process=>[],
:path=>"/:class/:attachment/:id_partition/:style/:filename",
:preserve_files=>false, :processors=>[:thumbnail],
:source_file_options=>{:all=>"-auto-orient"}, :storage=>:s3,
:styles=>{:large=>"500x500#", :medium=>"200x200#",
:thumb=>"100x100#"}, :url=>":s3_path_url",
:url_generator=>Paperclip::UrlGenerator,
:use_default_time_zone=>true, :use_timestamp=>true, :whiny=>true,
:validate_media_type=>true, :adapter_options=>
{:hash_digest=>Digest::MD5},
:check_validity_before_processing=>true, :s3_host_name=>"s3-us-
west-2.amazonaws.com", :s3_protocol=>"https", :s3_credentials=>
{:bucket=>"example", :access_key_id=>"REDACTED",
:secret_access_key=>"REDACTED",
:s3_region=>"us-west-2"}}, @post_processing=true,
@queued_for_delete=[], @queued_for_write={}, @errors={},
@dirty=false, @interpolator=Paperclip::Interpolations,
@url_generator=#<Paperclip::UrlGenerator:0x000055b3e043a8e8
@attachment=#<Paperclip::Attachment:0x000055b3e043aa50 ...>>,
@source_file_options={:all=>"-auto-orient"}, @whiny=true,
@s3_options={}, @s3_permissions={:default=>:"public-read"},
@s3_protocol="https", @s3_metadata={}, @s3_headers={},
@s3_storage_class={:default=>nil},
@s3_server_side_encryption=false, @http_proxy=nil,
@use_accelerate_endpoint=nil>
user.avatar(:thumb)
返回:
https://s3-us-west-2.amazonaws.com/example/users/avatars/000/000/001/thumb/two_people_talking.gif?1560705432
现在,我正在尝试允许用户通过react-native应用程序上传新的/更改的图像,而后端是Nodejs,这对我来说是相对较新的。
我很困惑如何实现这一点,尤其是因为这些示例都引用了我没有使用过的Mongoose。
仅显示如何成功更新用户,这是如何更新用户的first_name
:
users.updateUserPhoto = (req, res) => {
let id = req.decoded.id
let first_name = req.body.first_name
models.Users.update(
first_name: first_name,
{
where: {
id: req.decoded.id
}
},
).then(response => {
res.status(200).json({ status: 200, data: { response } });
})
.catch(error => {
res.status(500).json({ status: 500, err: error });
})
}
这是我找到的node-paperclip-s3包裹,这是我要做的事情:
'use strict'
let users = {};
const { Users } = require('../models');
let models = require("../models/index");
let Sequelize = require('sequelize');
let Paperclip = require('node-paperclip');
let Op = Sequelize.Op;
let sequelizeDB = require('../modules/Sequelize');
users.updateUserPhoto = (req, res) => {
let id = req.decoded.id
let avatar = req.body.avatar <- this is a file path
models.Users.plugin(Paperclip.plugins, {
avatar: {
styles: [
{ original: true },
{ large: { width: 500, height: 500 } },
{ medium: { width: 200, height: 200 } },
{ thumb: { width: 100, height: 100 } }
],
prefix: '/users/{{attachment}}/{{id}}/{{filename}}',
name_format: '{{style}}.{{extension}}',
storage: 's3',
s3: {
bucket: process.env.S3_BUCKET_NAME,
region: 'us-west-2',
key: process.env.AWS_ACCESS_KEY_ID,
secret: process.env.AWS_SECRET_ACCESS_KEY,
}
}
})
models.Users.update(
avatar,
{
where: {
id: req.decoded.id
}
},
).then(response => {
res.status(200).json({ status: 200, data: { response } });
})
.catch(error => {
res.status(500).json({ status: 500, err: error });
})
}
我也尝试过这样的事情:
models.Users.update(Paperclip.plugins, {
avatar: {
styles: [
{ original: true },
{ large: { width: 500, height: 500 } },
{ medium: { width: 200, height: 200 } },
{ thumb: { width: 100, height: 100 } }
],
prefix: '/users/{{attachment}}/{{id}}/{{filename}}',
name_format: '{{style}}.{{extension}}',
storage: 's3',
s3: {
bucket: process.env.S3_BUCKET_NAME,
region: 'us-west-2',
key: process.env.AWS_ACCESS_KEY_ID,
secret: process.env.AWS_SECRET_ACCESS_KEY,
}
},
{
where: {
id: req.decoded.id
}
},
).then(response => {
res.status(200).json({ status: 200, data: { response } });
})
.catch(error => {
res.status(500).json({ status: 500, err: error });
})
})
我尝试过:
let new_avatar = (Paperclip.plugins, {
avatar: {
styles: [
{ original: true },
{ large: { width: 500, height: 500 } },
{ medium: { width: 200, height: 200 } },
{ thumb: { width: 100, height: 100 } }
],
prefix: `/users/avatars/{{attachment}}/{{id}}/{{filename}}`,
name_format: '{{style}}.{{extension}}',
storage: 's3',
s3: {
bucket: process.env.S3_BUCKET_NAME,
region: 'us-west-2',
key: process.env.AWS_ACCESS_KEY_ID,
secret: process.env.AWS_SECRET_ACCESS_KEY,
}
},
})
let data = {
avatar: new_avatar
}
models.Users.update(
data,
{
where: {
id: req.decoded.id
}
},
).then(response => {
res.status(200).json({ status: 200, data: { response } });
})
.catch(error => {
res.status(500).json({ status: 500, err: error });
})
从上面链接中的示例中,我不了解它是如何保存到S3的,或者它是如何以Rails gem创建该记录的相同方式来更新数据库的。任何帮助或指针表示赞赏!
请让我知道您可能需要其他哪些信息才能完成此过程。
答案 0 :(得分:0)
以下代码适用于nodeJ。 我添加了一个API,用于将前端的图像保存到AWS S3。
我在代码中添加了注释,以便更好地理解。
let str = `"sIDHistory": [ "21 34 49234328 9" ]`;
let arr = str.match(/([0-9]+)/g).map(Number);
console.log(arr);
这是老派的非理想解决方案。请尝试一下,让我知道。