I am using highcharts and Ruby on Rails to creating chart. I want to save graph as server automatically. Following code download image automatically on download folder with name as chart.png
events: {
load: function () {
var ch = this;
setTimeout(function(){
ch.exportChart();
});
}
}
I want to save grph as /asset/image folder with name today_Report.png
I don't think you can force user to save anything in folder you want to. That's about path, now about name for file, check this, example:
chart.exportChart({ "filename": "today_Report" });
Related
I know this is a very old issue but honestly I did not find a single complete piece of code for dropzonejs which is working as described.
I am trying to implement dropzonejs for file uploading. What I need is upload file to the server when it is dragged, and remove the file from the server when Remove file url is clicked.
I saw many solutions, for me, uploading just works fine. But when I try to implement the remove, I found no sample.
for the upload process, I configured my dropzone like below:
Dropzone.options.dropzoneForm = {
addRemoveLinks: true,
init: function() {
//upload process
}
};
It shows the addRemoveLink like "Remove file" just under the uploaded file.
I have seen someone to use another property like
Dropzone.options.dropzoneForm = {
addRemoveLinks: true,
removedFiles: function() {
//remove process
}
};
I am not sure how to implement this. Should I implement this like below? :
Dropzone.options.dropzoneForm = {
addRemoveLinks: true,
init: function(){
//upload process
}
removedFiles: function() {
//remove process
}
};
Please NB. I am expecting a full working example with server side upload and file delete.
I'm having trouble with highcharts downloading PNG image, I want to use my own button instead the highcharts one, reading the documentation I need to use "exportChart" function, but it removes data:
options:any = {
exporting: {
enabled: false
}
}
exportPNG():void{
this.chart.exportChart();
}
There is an "almost working" example it gives an error in app.module using "require" and another one when tyring to import from exporting, help in make the example work will be apreciate
https://stackblitz.com/edit/angular-dqck8n
When it's working, we can click in "download button" and downloads the chart, but if click again it returns an error because data is removed from chart.
I've realized it also happen using exporting library, you can check it download image file and trying to do zoom out.
The reason is saveInstance method - it is called on every chart's load. When exporting, a new temporary chart is created and then deleted so now your angular component has the reference to the removed exported chart - this.chart inside exportPNG() refers to the empty chart object.
You can check if load event is called for a normal chart and then save the chart's instance.
saveInstance(chartInstance): void {
if (!chartInstance.options.chart.forExport) this.chart = chartInstance;
}
live example: https://stackblitz.com/edit/angular-41tmjd?file=app/mychart.component.ts
I have a question regarding direct-image-upload from Cloudinary. I could set this up in a rails app using simple-form and <% = f.cl_image_upload (: file)%> but after I select the file, it start uploading. I don't like this approach and I want that upload start just after commit the form. Is it possible? I worry about having file in Cloudinary server which does not have a corresponding id in my database.
The default implementation indeed automatically uploads a file once selected. Most users don't bother with deleting accidentally uploaded images as they don't take a lot of extra storage. However, if you wish not to upload the image automatically on selection, you can set the autoUpload to false in the fileupload call. For example:
$(document).ready(function() {
$('.cloudinary-fileupload').fileupload({
autoUpload: false
});
});
I think you can help me, Actually, I have this script...
<script>
$(document).ready(function() {
// Cloudinary jQuery integration library uses jQuery File Upload widget
// (see http://blueimp.github.io/jQuery-File-Upload/).
// Any file input field with cloudinary-fileupload class is automatically
// wrapped using the File Upload widget and configured for Cloudinary uploads.
// You can further customize the configuration using .fileupload method
// as we do below.
$(".cloudinary-fileupload")
.fileupload({
// Uncomment the following lines to enable client side image resizing and valiation.
// Make sure cloudinary/processing is included the js file
disableImageMetaDataLoad: true,
disableImageResize: false,
imageMaxWidth: 800,
imageMaxHeight: 800,
acceptFileTypes: /(\.|\/)(gif|jpe?g|png|bmp|ico)$/i,
maxFileSize: 20000000, // 20MB
dropZone: "#direct_upload",
start: function (e) {
$(".status").text("Starting upload...");
},
progress: function (e, data) {
$(".status").text("Uploading... " + Math.round((data.loaded * 100.0) / data.total) + "%");
},
fail: function (e, data) {
$(".status").text("Upload failed");
}
})
.off("cloudinarydone").on("cloudinarydone", function (e, data) {
$(".status").text("");
$(".preview").html(
$.cloudinary.image(data.result.public_id, {
format: data.result.format, width: 150, height: 100, crop: "limit"
})
);
});
});
</script>
I'm beginning with javascript. This script above is working fine, but it just show me the preview after upload it. I don't like this approach because, if user change the preview image, I will have one file upload to Cloudinary without relative register in my db. Will be great if is possible show the preview and just upload after the user press submit in the form.
Note: I hope you understand me, I'm from Brazil and I don't write in english very well.
I am using the jquery-ui version of Blueimp upload and I like how I can format a table and display files that were just uploaded. But I'd like to use it as a file manager as well so I want to preload existing files and display than as if they were just uploaded. How can I do that? A sample link to where someone else has addressed this would suffice. BTW, I am uploading several different file types, not just images.
Thanks!
Or without an ajax call:
Prepare array containing details of existing files, e.g:
var files = [
{
"name":"fileName.jpg",
"size":775702,
"type":"image/jpeg",
"url":"http://mydomain.com/files/fileName.jpg",
"deleteUrl":"http://mydomain.com/files/fileName.jpg",
"deleteType":"DELETE"
},
{
"name":"file2.jpg",
"size":68222,
"type":"image/jpeg",
"url":"http://mydomain.com/files/file2.jpg",
"deleteUrl":"http://mydomain.com/files/file2.jpg",
"deleteType":"DELETE"
}
];
Call done callback
var $form = $('#fileupload');
// Init fileuploader if not initialized
// $form.fileupload();
$form.fileupload('option', 'done').call($form, $.Event('done'), {result: {files: files}});
I also had the same problem. It is not magic how it works. I recommend to examine the UploadHandler.php file. Then you will be able to modify this plugin accordind to your needs.
The code above in your second post is just an ajax call to the uploader script (by default index.php in server/php/ folder). The call method is set to "get" by default in $.ajax object.
Open the UploadHandler.php file and go to the class method "initialize(...)". You will see how the call with "get" handled. UploadHandler calls the class method this->get(.:.) to prepare and send the list of existing files. If you use other upload directory, you need pass a parameter to the UploadHänder. Simply chage the url property in the $.ajax object like :
url: $('#fileupload').fileupload('option', 'url')+'?otherDir='+myDir,
then you should initialize the option property of the UploadHandler before you create a new UploadHandler object like this:
$otherDir = trim($_REQUEST['otherDir']);
$otherDir_url = [anyURL] .'/'.$otherDir;//so that the files can be downloaded by clicking on the link
$options = array(
'upload_dir'=> $otherDir,
'upload_url'=> $otherDir_url,
);
$upload_handler = new UploadHandler($options);
Found the code in the main js file... It wasn't obvious how it worked. Got it working just fine.
// Load existing files:
$.ajax({
url: $('#fileupload').fileupload('option', 'url'),
dataType: 'json',
context: $('#fileupload')[0]
}).done(function (result) {
$(this).fileupload('option', 'done').call(this, null, {result: result});
});
If any of you looking at this is doing it in .NET, find this: (for me it is in application.js
For a fairly recent version, there is a function
// Load existing files:
$.getJSON($('#fileupload form').prop('action'), function(files) {
files = somethingelse;
var fu = $('#fileupload').data('fileupload');
fu._adjustMaxNumberOfFiles(-files.length);
fu._renderDownload(files)
.appendTo($('#fileupload .files'))
.fadeIn(function() {
// Fix for IE7 and lower:
$(this).show();
});
});
Inside the application.js
I'm doing it for .NET though, and actually needed this gone.
Then set your somethingelse to either your files or "" depending on what you want to show. If you remove the line files = somethingelse then it will preload all files from the folder.
I need to do some post-processing work on a png file of a Highchart graph. How do I determine when the export is finished? I've tried to attach a function, but it never gets called:
console.log("Saving chart...");
chart.exportChart({
type : "application/png",
filename: "tmp_chart_filename"
},
function(data) {
console.log("Export done, Data: " + data); // Not called.
})
console.log("Out");
To my understanding, it is not possible out of the box.
What happens internally in the exportChart() method is, a form is created on the fly and the chart svg is sent to the server by programmatically triggering a submit on this form. The server in turn, processes received svg into a png (or whatever you may select) and returns it to the browser.
The popup you see that asks you to "save as" is the action of the browser (and not any highchart code) when a file is thrown at it. Basically the returned png is never returned to the code, it goes directly to the browser.
You can however write your custom svg->png server module and do your magic there :)
I had a rather similar issue and solved it by defining the onclick event on the contextButton. This seems possible only if you are OK with losing the items in the context menu (export by file type), which wasn't an issue in my case. Below the code to be included in the chart initial building:
[... your Highcharts chart setup ...],
exporting: {
buttons: {
contextButton: {
menuItem: null, // You'll lose your menu items here
onclick: function(event) {
yourFunctionBeforeExport();
this.exportChart();
yourFunctionAfterExport();
}
}
}
}
[... rest of the Highcharts chart setup ...]