我想将多个文件上传到rails服务器,并希望为每个文件显示单独的进度条。我正在使用ng-file-upload来上传文件。文件正在上传,但它只显示最后一个文件的进度,而不显示其他文件。我正在附加我的代码。请帮忙。
角度控制器代码:
$scope.upload_file = function() {
var files = $scope.files;
var uploadUrl = base_url+"/upload_image";
var job_id = $scope.directive.id;
if(current_user.role == "third_party_vendor" || current_user.role == "employee")
{
var source = current_user.user_login+"-"+current_user.role;
}
else
{
var source = $scope.dataObj.source["user_login"]+"-"+$scope.dataObj.source["role"];
}
if(job_id === "" || job_id === undefined || files === undefined || files === ""){
error_notification("Please select a job and a file.");
return;
}
hideLoader();
$("#upload_resume_queue").modal('show');
var formData = new Array();
formData['job_id'] = job_id;
formData['context'] = "inside_page";
formData['source'] = source;
for (var i = 0; i < files.length; i++) {
var file = files[i];
console.log(file.name);
$scope.upload = $upload.upload({
url: uploadUrl,
data:{myObj: formData},
file: file,
}).progress(function(evt) {
//console.log('percent: ' +parseInt(100.0 * evt.loaded / evt.total));
file.progress = Math.round(evt.loaded * 100 / evt.total)
}).success(function(responseText) {
hideLoader();
try{
var response = responseText;
}catch(e){
error_notification("Invalid Excel file Imported.");
return;
}
if(response.status==='wrong_content_type')
error_notification("Please upload a valid file format.",0);
if(response.status==='job_application_present'){
$scope.duplicate = true;
$scope.jobID = job_id;
$scope.user_id = response.user_id;
$scope.application_id = response.application_id;
//showModal('#duplicate_application_modal');
error_notification("Job Application already present for this user and job.",0);
}
if(response.status==='invalid_email')
error_notification("The email in the resume is an invalid one.",0);
if(response.status==='success')
success_notification("The uploaded resume has been parsed.",0);
});
}
};
Html代码:
<input type="file" class="required file_browse" ng-file-select="" ng-model="files" multiple />
答案 0 :(得分:2)
我无法测试以下内容,但我认为我发现了什么问题。
在JavaScript中,变量的作用域是函数。因此,在for循环中,您更改了.img {
background-image: url(path/to/your/ima.ge);
background-size: cover;
}
行中file
的值。最后,在var file = files[i];
循环完成后,for
的值是最后一个文件。
某些时候file
会触发.progress
事件,以通知您进度(其中一个文件)。并且您更新状态,但是,由于ng-file-upload
具有最后一个文件的值,而不是您期望的那个,因此最新文件的状态正在更新。
这就是为什么只更新了最后一个文件。要解决此问题,您需要为每个file
事件访问正确的file
。为此,您可以使用匿名函数保留progress
变量。
file
在您的代码中,可能存在与变量范围和javascript事件循环相关的其他问题。有关详细信息,请查看this。