Javascript 正在将meteor中未定义的属性上载到Amazon s3
我一直在遵循将图像上传到AmazonS3的教程,在从文件选择器中选择图像文件后,我遇到了一个错误Javascript 正在将meteor中未定义的属性上载到Amazon s3,javascript,meteor,amazon-s3,image-uploading,Javascript,Meteor,Amazon S3,Image Uploading,我一直在遵循将图像上传到AmazonS3的教程,在从文件选择器中选择图像文件后,我遇到了一个错误 post_submit.js:36 Uncaught TypeError: Cannot read property 'uploadToAmazonS3' of undefined at Object.change input[type="file"] (post_submit.js:36) 这是我的密码 我似乎无法找出导致此错误的原因,如果您需要更多我的代码,请告诉我,但我认为这涵盖了大部分内容
post_submit.js:36 Uncaught TypeError: Cannot read property 'uploadToAmazonS3' of undefined
at Object.change input[type="file"] (post_submit.js:36)
这是我的密码
我似乎无法找出导致此错误的原因,如果您需要更多我的代码,请告诉我,但我认为这涵盖了大部分内容
client/templates/posts/post_submit.html
<template name="postSubmit">
<div class="upload-area">
<form id="upload">
<p class="alert alert-success text-center">
<span>Click or Drag a File Here to Upload</span>
<input type="file">
</p>
</form>
{{> files}}
</div>
<input type="submit" value="Submit" class="btn btn-primary"/>
</form>
</template>
两个/modules/_modules.js
Template.postSubmit.events({
'change input[type="file"]' ( event, template ) {
Modules.client.uploadToAmazonS3( { event: event, template: template } );
}
});
Modules = {};
Modules.both = {};
Modules.client = {};
Modules.server = {};
let template;
let _getFileFromInput = ( event ) => event.target.files[0];
let _setPlaceholderText = ( string = "Click or Drag a File Here to Upload" ) => {
template.find( ".alert span" ).innerText = string;
};
let _addUrlToDatabase = ( url ) => {
Meteor.call( "storeUrlInDatabase", url, ( error ) => {
if ( error ) {
Bert.alert( error.reason, "warning" );
_setPlaceholderText();
} else {
Bert.alert( "File uploaded to Amazon S3!", "success" );
_setPlaceholderText();
}
});
};
let _uploadFileToAmazon = ( file ) => {
const uploader = new Slingshot.Upload( "uploadToAmazonS3" );
uploader.send( file, ( error, url ) => {
if ( error ) {
Bert.alert( error.message, "warning" );
_setPlaceholderText();
} else {
_addUrlToDatabase( url );
}
});
};
let upload = ( options ) => {
template = options.template;
let file = _getFileFromInput( options.event );
_setPlaceholderText( `Uploading ${file.name}...` );
_uploadFileToAmazon( file );
};
Modules.client.uploadToAmazonS3 = upload;
Slingshot.fileRestrictions( "uploadToAmazonS3", {
allowedFileTypes: [ "image/png", "image/jpeg", "image/gif" ],
maxSize: 1 * 1024 * 1024
});
Slingshot.createDirective( "uploadToAmazonS3", Slingshot.S3Storage, {
bucket: "mrskitson-images",
acl: "public-read",
authorize: function () {
let userFileCount = Files.find( { "userId": this.userId } ).count();
return userFileCount < 3 ? true : false;
},
key: function ( file ) {
var user = Meteor.users.findOne( this.userId );
return user.emails[0].address + "/" + file.name;
}
});
Files = new Meteor.Collection( 'files' );
Files.allow({
insert: function() { return false; },
update: function() { return false; },
remove: function() { return false; }
});
Files.deny({
insert: function(){ return true; },
update: function(){ return true; },
remove: function(){ return true; }
});
Meteor.methods({
storeUrlInDatabase: function( url ) {
check( url, String );
Modules.both.checkUrlValidity( url );
try {
Files.insert({
url: url,
userId: Meteor.userId(),
added: new Date()
});
} catch( exception ) {
return exception;
}
}
});
客户端/modules/_modules.js
Template.postSubmit.events({
'change input[type="file"]' ( event, template ) {
Modules.client.uploadToAmazonS3( { event: event, template: template } );
}
});
Modules = {};
Modules.both = {};
Modules.client = {};
Modules.server = {};
let template;
let _getFileFromInput = ( event ) => event.target.files[0];
let _setPlaceholderText = ( string = "Click or Drag a File Here to Upload" ) => {
template.find( ".alert span" ).innerText = string;
};
let _addUrlToDatabase = ( url ) => {
Meteor.call( "storeUrlInDatabase", url, ( error ) => {
if ( error ) {
Bert.alert( error.reason, "warning" );
_setPlaceholderText();
} else {
Bert.alert( "File uploaded to Amazon S3!", "success" );
_setPlaceholderText();
}
});
};
let _uploadFileToAmazon = ( file ) => {
const uploader = new Slingshot.Upload( "uploadToAmazonS3" );
uploader.send( file, ( error, url ) => {
if ( error ) {
Bert.alert( error.message, "warning" );
_setPlaceholderText();
} else {
_addUrlToDatabase( url );
}
});
};
let upload = ( options ) => {
template = options.template;
let file = _getFileFromInput( options.event );
_setPlaceholderText( `Uploading ${file.name}...` );
_uploadFileToAmazon( file );
};
Modules.client.uploadToAmazonS3 = upload;
Slingshot.fileRestrictions( "uploadToAmazonS3", {
allowedFileTypes: [ "image/png", "image/jpeg", "image/gif" ],
maxSize: 1 * 1024 * 1024
});
Slingshot.createDirective( "uploadToAmazonS3", Slingshot.S3Storage, {
bucket: "mrskitson-images",
acl: "public-read",
authorize: function () {
let userFileCount = Files.find( { "userId": this.userId } ).count();
return userFileCount < 3 ? true : false;
},
key: function ( file ) {
var user = Meteor.users.findOne( this.userId );
return user.emails[0].address + "/" + file.name;
}
});
Files = new Meteor.Collection( 'files' );
Files.allow({
insert: function() { return false; },
update: function() { return false; },
remove: function() { return false; }
});
Files.deny({
insert: function(){ return true; },
update: function(){ return true; },
remove: function(){ return true; }
});
Meteor.methods({
storeUrlInDatabase: function( url ) {
check( url, String );
Modules.both.checkUrlValidity( url );
try {
Files.insert({
url: url,
userId: Meteor.userId(),
added: new Date()
});
} catch( exception ) {
return exception;
}
}
});
server/modules/_modules.js
Template.postSubmit.events({
'change input[type="file"]' ( event, template ) {
Modules.client.uploadToAmazonS3( { event: event, template: template } );
}
});
Modules = {};
Modules.both = {};
Modules.client = {};
Modules.server = {};
let template;
let _getFileFromInput = ( event ) => event.target.files[0];
let _setPlaceholderText = ( string = "Click or Drag a File Here to Upload" ) => {
template.find( ".alert span" ).innerText = string;
};
let _addUrlToDatabase = ( url ) => {
Meteor.call( "storeUrlInDatabase", url, ( error ) => {
if ( error ) {
Bert.alert( error.reason, "warning" );
_setPlaceholderText();
} else {
Bert.alert( "File uploaded to Amazon S3!", "success" );
_setPlaceholderText();
}
});
};
let _uploadFileToAmazon = ( file ) => {
const uploader = new Slingshot.Upload( "uploadToAmazonS3" );
uploader.send( file, ( error, url ) => {
if ( error ) {
Bert.alert( error.message, "warning" );
_setPlaceholderText();
} else {
_addUrlToDatabase( url );
}
});
};
let upload = ( options ) => {
template = options.template;
let file = _getFileFromInput( options.event );
_setPlaceholderText( `Uploading ${file.name}...` );
_uploadFileToAmazon( file );
};
Modules.client.uploadToAmazonS3 = upload;
Slingshot.fileRestrictions( "uploadToAmazonS3", {
allowedFileTypes: [ "image/png", "image/jpeg", "image/gif" ],
maxSize: 1 * 1024 * 1024
});
Slingshot.createDirective( "uploadToAmazonS3", Slingshot.S3Storage, {
bucket: "mrskitson-images",
acl: "public-read",
authorize: function () {
let userFileCount = Files.find( { "userId": this.userId } ).count();
return userFileCount < 3 ? true : false;
},
key: function ( file ) {
var user = Meteor.users.findOne( this.userId );
return user.emails[0].address + "/" + file.name;
}
});
Files = new Meteor.Collection( 'files' );
Files.allow({
insert: function() { return false; },
update: function() { return false; },
remove: function() { return false; }
});
Files.deny({
insert: function(){ return true; },
update: function(){ return true; },
remove: function(){ return true; }
});
Meteor.methods({
storeUrlInDatabase: function( url ) {
check( url, String );
Modules.both.checkUrlValidity( url );
try {
Files.insert({
url: url,
userId: Meteor.userId(),
added: new Date()
});
} catch( exception ) {
return exception;
}
}
});
客户端/模块/上传至亚马逊s3.js
Template.postSubmit.events({
'change input[type="file"]' ( event, template ) {
Modules.client.uploadToAmazonS3( { event: event, template: template } );
}
});
Modules = {};
Modules.both = {};
Modules.client = {};
Modules.server = {};
let template;
let _getFileFromInput = ( event ) => event.target.files[0];
let _setPlaceholderText = ( string = "Click or Drag a File Here to Upload" ) => {
template.find( ".alert span" ).innerText = string;
};
let _addUrlToDatabase = ( url ) => {
Meteor.call( "storeUrlInDatabase", url, ( error ) => {
if ( error ) {
Bert.alert( error.reason, "warning" );
_setPlaceholderText();
} else {
Bert.alert( "File uploaded to Amazon S3!", "success" );
_setPlaceholderText();
}
});
};
let _uploadFileToAmazon = ( file ) => {
const uploader = new Slingshot.Upload( "uploadToAmazonS3" );
uploader.send( file, ( error, url ) => {
if ( error ) {
Bert.alert( error.message, "warning" );
_setPlaceholderText();
} else {
_addUrlToDatabase( url );
}
});
};
let upload = ( options ) => {
template = options.template;
let file = _getFileFromInput( options.event );
_setPlaceholderText( `Uploading ${file.name}...` );
_uploadFileToAmazon( file );
};
Modules.client.uploadToAmazonS3 = upload;
Slingshot.fileRestrictions( "uploadToAmazonS3", {
allowedFileTypes: [ "image/png", "image/jpeg", "image/gif" ],
maxSize: 1 * 1024 * 1024
});
Slingshot.createDirective( "uploadToAmazonS3", Slingshot.S3Storage, {
bucket: "mrskitson-images",
acl: "public-read",
authorize: function () {
let userFileCount = Files.find( { "userId": this.userId } ).count();
return userFileCount < 3 ? true : false;
},
key: function ( file ) {
var user = Meteor.users.findOne( this.userId );
return user.emails[0].address + "/" + file.name;
}
});
Files = new Meteor.Collection( 'files' );
Files.allow({
insert: function() { return false; },
update: function() { return false; },
remove: function() { return false; }
});
Files.deny({
insert: function(){ return true; },
update: function(){ return true; },
remove: function(){ return true; }
});
Meteor.methods({
storeUrlInDatabase: function( url ) {
check( url, String );
Modules.both.checkUrlValidity( url );
try {
Files.insert({
url: url,
userId: Meteor.userId(),
added: new Date()
});
} catch( exception ) {
return exception;
}
}
});
服务器/slingshot.js
Template.postSubmit.events({
'change input[type="file"]' ( event, template ) {
Modules.client.uploadToAmazonS3( { event: event, template: template } );
}
});
Modules = {};
Modules.both = {};
Modules.client = {};
Modules.server = {};
let template;
let _getFileFromInput = ( event ) => event.target.files[0];
let _setPlaceholderText = ( string = "Click or Drag a File Here to Upload" ) => {
template.find( ".alert span" ).innerText = string;
};
let _addUrlToDatabase = ( url ) => {
Meteor.call( "storeUrlInDatabase", url, ( error ) => {
if ( error ) {
Bert.alert( error.reason, "warning" );
_setPlaceholderText();
} else {
Bert.alert( "File uploaded to Amazon S3!", "success" );
_setPlaceholderText();
}
});
};
let _uploadFileToAmazon = ( file ) => {
const uploader = new Slingshot.Upload( "uploadToAmazonS3" );
uploader.send( file, ( error, url ) => {
if ( error ) {
Bert.alert( error.message, "warning" );
_setPlaceholderText();
} else {
_addUrlToDatabase( url );
}
});
};
let upload = ( options ) => {
template = options.template;
let file = _getFileFromInput( options.event );
_setPlaceholderText( `Uploading ${file.name}...` );
_uploadFileToAmazon( file );
};
Modules.client.uploadToAmazonS3 = upload;
Slingshot.fileRestrictions( "uploadToAmazonS3", {
allowedFileTypes: [ "image/png", "image/jpeg", "image/gif" ],
maxSize: 1 * 1024 * 1024
});
Slingshot.createDirective( "uploadToAmazonS3", Slingshot.S3Storage, {
bucket: "mrskitson-images",
acl: "public-read",
authorize: function () {
let userFileCount = Files.find( { "userId": this.userId } ).count();
return userFileCount < 3 ? true : false;
},
key: function ( file ) {
var user = Meteor.users.findOne( this.userId );
return user.emails[0].address + "/" + file.name;
}
});
Files = new Meteor.Collection( 'files' );
Files.allow({
insert: function() { return false; },
update: function() { return false; },
remove: function() { return false; }
});
Files.deny({
insert: function(){ return true; },
update: function(){ return true; },
remove: function(){ return true; }
});
Meteor.methods({
storeUrlInDatabase: function( url ) {
check( url, String );
Modules.both.checkUrlValidity( url );
try {
Files.insert({
url: url,
userId: Meteor.userId(),
added: new Date()
});
} catch( exception ) {
return exception;
}
}
});
两个/methods/insert/files.js
Template.postSubmit.events({
'change input[type="file"]' ( event, template ) {
Modules.client.uploadToAmazonS3( { event: event, template: template } );
}
});
Modules = {};
Modules.both = {};
Modules.client = {};
Modules.server = {};
let template;
let _getFileFromInput = ( event ) => event.target.files[0];
let _setPlaceholderText = ( string = "Click or Drag a File Here to Upload" ) => {
template.find( ".alert span" ).innerText = string;
};
let _addUrlToDatabase = ( url ) => {
Meteor.call( "storeUrlInDatabase", url, ( error ) => {
if ( error ) {
Bert.alert( error.reason, "warning" );
_setPlaceholderText();
} else {
Bert.alert( "File uploaded to Amazon S3!", "success" );
_setPlaceholderText();
}
});
};
let _uploadFileToAmazon = ( file ) => {
const uploader = new Slingshot.Upload( "uploadToAmazonS3" );
uploader.send( file, ( error, url ) => {
if ( error ) {
Bert.alert( error.message, "warning" );
_setPlaceholderText();
} else {
_addUrlToDatabase( url );
}
});
};
let upload = ( options ) => {
template = options.template;
let file = _getFileFromInput( options.event );
_setPlaceholderText( `Uploading ${file.name}...` );
_uploadFileToAmazon( file );
};
Modules.client.uploadToAmazonS3 = upload;
Slingshot.fileRestrictions( "uploadToAmazonS3", {
allowedFileTypes: [ "image/png", "image/jpeg", "image/gif" ],
maxSize: 1 * 1024 * 1024
});
Slingshot.createDirective( "uploadToAmazonS3", Slingshot.S3Storage, {
bucket: "mrskitson-images",
acl: "public-read",
authorize: function () {
let userFileCount = Files.find( { "userId": this.userId } ).count();
return userFileCount < 3 ? true : false;
},
key: function ( file ) {
var user = Meteor.users.findOne( this.userId );
return user.emails[0].address + "/" + file.name;
}
});
Files = new Meteor.Collection( 'files' );
Files.allow({
insert: function() { return false; },
update: function() { return false; },
remove: function() { return false; }
});
Files.deny({
insert: function(){ return true; },
update: function(){ return true; },
remove: function(){ return true; }
});
Meteor.methods({
storeUrlInDatabase: function( url ) {
check( url, String );
Modules.both.checkUrlValidity( url );
try {
Files.insert({
url: url,
userId: Meteor.userId(),
added: new Date()
});
} catch( exception ) {
return exception;
}
}
});
@anders kitson通过仔细阅读错误消息,您本可以节省大量时间。它告诉您问题出在哪里:
post_submit.js:36未捕获类型错误:无法读取未定义的
在Object.change输入[type=“file”](post_submit.js:36)
post_submit.js第36行
尽管显示为post_submit.js的文件只有5行长。如果这是正确的文件,那么有问题的行可能是:
Modules.client.uploadToAmazonS3({event:event,template:template});
它试图告诉您Modules.client未定义。这就是你问题的原因。你知道,我刚刚克隆了这个git repo,它对我有效:
> Modules.client
{uploadToAmazonS3: ƒ}
我甚至将现有的client/modules/upload to amazon.js
重命名为client/modules/upload_to_amazon_s3.js
,与您的示例代码完全相同
也许,有一些问题阻止您加载文件?也许文件ACL没有读取权限?你在哪里导入这些模块文件?我不知道你导入这些模块文件的意思是什么?我的意思是,你能展示一下你在哪里导入“lib/modules/…等吗?我想我没有任何导入代码,这是本教程中的一个工作github repo,我看了一遍,没有看到任何导入代码,也许我是瞎的。嗯,我确实读过这个错误,我知道它是由那行代码引起的,但我不知道为什么那行代码不起作用,这就是我发布所有其他代码的全部原因。