问题描述
我使用在我AngularJS应用程序上传文件。我能够成功地保存数据通过NG-流上传多个文件一起。然而,查询数据,并通过JSON得到它的时候,我不知道如何将文件添加到每一行的NG-流对象。每个文件是基地64连接在JSON字符串codeD。
I'm using ng-flow to upload files in my AngularJS app. I'm able to successfully save data along with uploading multiple files via ng-flow. However, when querying the data and getting it via JSON, I'm not sure how to add the files into the ng-flow object for each row. Each file is base 64 encoded in the JSON string.
要澄清,我也越来越每每口井都有一个名字,位置,许可证等,并多张图片。所有井的属性都成功地填充在DOM除图像。
To clarify, I am getting each well and each well has a name, location, permit, etc. and multiple images. All of the attributes of the well are successfully populated in the DOM except for the images.
HTML
...
<div flow-init flow-name="well.flow">
<span class="btn" flow-btn flow-attrs="{accept:'image/*'}">Upload File</span>
<table>
<tr ng-repeat="file in well.flow.files">
<td>{{ $index+1 }}</td>
<td>{{ file.name }}</td>
<td>{{ file.msg }}</td>
<td><span ng-click="file.cancel()"><i class="icon-remove"></i></span></td>
</tr>
</table>
</div>
在AngularJS控制器:
Inside the AngularJS controller:
wellsFactory.getData($scope.wellsParams).then(function(data){
angular.forEach(data.wells, function(wells, wKey){
if(wells.files){
var list = [];
angular.forEach(wells.files, function(files, fKey){
var binaryFile = atob(files.file);
var byteNumbers = new Array(binaryFile.length);
for (var i = 0; i < binaryFile.length; i++) {
byteNumbers[i] = binaryFile.charCodeAt(i);
}
var byteArray = new Uint8Array(byteNumbers);
var blob = new Blob([byteArray.buffer], {type: "image/png"});
list[fKey] = blob;
});
/* Add blob files to wells ng-flow */
data.wells[wKey].flow.files = list; /* breaks */
//** How do I add ng-flow files? **//
}
});
$scope.wells = data.wells;
});
我已经成功地测试了输出JSON数据的base64为图像文件,甚至将它们设置为斑点之后。
I've successfully tested the output JSON base64 data for the image files, even after setting them as blobs.
/* Test Each File (within foreach) */
...
var reader = new FileReader();
reader.onload = function(e){
console.log(e.target.result);
};
reader.readAsDataURL(blob);
...
如何正确的blob基于图像文件加载到NG-流对象的每一行?
How do I properly load blob based image files into ng-flow object for each row?
推荐答案
如果要添加新文件流,利用现有的方法 flow.addFile(文件)
。
If you want to add new files to flow, use existing method flow.addFile(file)
.
var blob = new Blob(['a'], {type: "image/png"});
blob.name = 'file.png';
flow.addFile(blob);
如果你想清除 flow.files
,使用 flow.cancel()
。
请注意: flow.files
不是斑点的阵列,它是 FlowFile
的
Note: flow.files
is not array of blobs, it is array of FlowFile
https://github.com/flowjs/flow.js#flowfile
斑点可以用来访问文件
属性( flow.files [0] .file
)。
Blob can be accessed with file
property (flow.files[0].file
).
这篇关于填充图像文件与JSON NG-flow.js的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!