Ckeditor Drag and Drop Image Upload Error 500
Uploading Dropped or Pasted Files
Uploading pasted and dragged images was introduced in CKEditor 4.5. It is provided through the Upload Image plugin that is included in the Standard and Full presets available from the Download site. You can as well add information technology to your custom build with online builder.
Starting from CKEditor 4.5 it is possible to enable uploading pasted and dropped images. This commodity is about the editor-server configuration for pasted and dropped files since it uses a different API than the File Browser plugin. To go an overview about this characteristic, refer to the Dropping and Pasting into Editor Content commodity.
# Bones Configuration
The CKEDITOR.config.uploadUrl setting contains the location of the script that handles file uploads of pasted and dragged files.
# Instance — Setting Upload URL for Uploading Pasted and Dragged Content
The sample beneath shows bones configuration code that can be used to configure pasting and dragging images into CKEditor. Notation that y'all also need to load a specific plugin to handle dropped files.
config.extraPlugins = 'uploadimage'; config.uploadUrl = '/uploader/upload.php'; It is too possible to ready a specific URL for a specific upload plugin. For example if you lot want to utilise Upload Image, you can set CKEDITOR.config.imageUploadUrl which will be used instead of CKEDITOR.config.uploadUrl
# Case — Setting Up Image Upload Plugin
config.extraPlugins = 'uploadimage'; config.imageUploadUrl = '/uploader/upload.php?type=Images'; To acquire more than nigh upload URL see the CKEDITOR.fileTools.getUploadUrl method.
# Communication between the Editor and the Server
To brand uploading on drop or paste work you lot demand a server-side awarding that will receive the uploaded file. This application is not a role of CKEditor four. You need to brand sure that both the editor and the server use the aforementioned API so they tin communicate with each other. You can create the server-side API to fit the editor, change the way how the editor creates the requests and handles the responses to fit the existing server API or you lot can apply a dedicated solution which will piece of work out of the box. All three possibilities are described below.
# Server-Side Configuration
The Upload Image plugin uses a different API than the File Browser plugin and expects JSON responses.
# Request
The default request for file uploads is a file as a form data with the 'upload' field.
# Response: File Uploaded Successfully
When the file is uploaded successfully, a JSON response with the following entries is expected:
-
uploaded– Ready toi. -
fileName– The name of the uploaded file. -
url– The URL to the uploaded file (URL-encoded).
Case
{ "uploaded": 1, "fileName": "foo.jpg", "url": "/files/foo.jpg" } Information technology is also possible to set an error bulletin to indicate that the file upload was completed simply some not-standard situation occurred.
Instance
{ "uploaded": 1, "fileName": "foo(2).jpg", "url": "/files/foo(2).jpg", "error": { "message": "A file with the same name already exists. The uploaded file was renamed to \"foo(2).jpg\"." } } # Response: File Could Not Be Uploaded
When a file could not exist uploaded, a JSON response with the following entries is expected:
-
uploaded– Prepare to0. -
error.bulletin– The fault message to display to the user.
{ "uploaded": 0, "mistake": { "message": "The file is besides big." } } # Editor-Side Configuration
Alternatively to changing the server API y'all tin modify the editor API, and so overwrite the way the editor builds requests and handles responses. You can practise it using the CKEDITOR.editor.fileUploadRequest and CKEDITOR.editor.fileUploadResponse events.
# Asking
Using the CKEDITOR.editor.fileUploadRequest event you can change how the editor requests piece of work. If the issue is not stopped or canceled, the default request volition be sent.
If you lot desire to alter this beliefs you lot can add together a custom listener with the default priority and stop the effect which will forbid the default behavior. For instance to send the data directly (without a form):
editor.on( 'fileUploadRequest', function( evt ) { var xhr = evt.data.fileLoader.xhr; xhr.setRequestHeader( 'Cache-Control', 'no-cache' ); xhr.setRequestHeader( 'X-File-Name', this.fileName ); xhr.setRequestHeader( 'Ten-File-Size', this.total ); xhr.send( this.file ); // Prevented the default beliefs. evt.terminate(); } ); You lot tin can likewise add custom request headers or set flags for the default asking. This is especially useful for enabling Cantankerous-Origin requests. For more data about Cross-Origin Resources Sharing see hither:
editor.on( 'fileUploadRequest', function( evt ) { var xhr = evt.information.fileLoader.xhr; xhr.setRequestHeader( 'Cache-Control', 'no-cache' ); xhr.setRequestHeader( '10-CUSTOM', 'HEADER' ); xhr.withCredentials = true; } ); When you mind to the CKEDITOR.editor.fileUploadRequest event with the default priority yous will get an XHR object which is opened as a POST asynchronous request. This happens in a listener with the priority of 5, so if you want to besides overwrite the open method in a request, you demand to heed with a lower priority. For example to send a PUT asking:
editor.on( 'fileUploadRequest', function( evt ) { var fileLoader = evt.data.fileLoader, formData = new FormData(), xhr = fileLoader.xhr; xhr.open( 'PUT', fileLoader.uploadUrl, true ); formData.append( 'upload', fileLoader.file, fileLoader.fileName ); fileLoader.xhr.send( formData ); // Prevented the default behavior. evt.cease(); }, null, zero, four ); // Listener with a priority four will exist executed earlier priority v. Finally, you tin also tell the file loader that the asking was not sent so it will not change its status. To do this, yous need to cancel the upshot:
editor.on( 'fileUploadRequest', function( evt ) { // ... // Cancel the event so that the file loader will non change its status. evt.cancel(); } ); Starting from CKEditor 4.six, you tin can also pass additional data to the asking using the requestData parameter of the CKEDITOR.editor.fileUploadRequest event. The data volition be passed to all requests made by the file loader. If you need to add some data only to requests made by a specific upload widget, you should use CKEDITOR.fileTools.uploadWidgetDefinition.additionalRequestParameters
To laissez passer some data to the request, listen to the fileUploadRequest event and add the data every bit a belongings of evt.data.requestData:
editor.on( 'fileUploadRequest', function( evt ) { evt.data.requestData.foo = 'bar'; } ); You can as well pass boosted files to the asking, adding to evt.data.requestData an object with two keys:
-
name– The proper name of the file. -
file– The file itself (as aHulkorFileexample).
Example:
editor.on( 'fileUploadRequest', function( evt ) { evt.data.requestData.otherFile = { name: 'file', file: myBlob }; } ); Note that the default file to be uploaded is as well a belongings of evt.data.requestData named upload and information technology can be overwritten when neccessary.
If the content of an image editor is pasted, information technology will be received as Base64 information and the file created from this data will need a proper name. In such cases the proper noun is based on the MIME blazon. To change this behavior use the CKEDITOR.config.fileTools_defaultFileName choice.
# Response
If you want to handle the response manually, you need to add a listener to the CKEDITOR.editor.fileUploadResponse event and call the CKEDITOR.eventInfo.cease method to preclude the default beliefs. The listener should set up the URL to the file on the server and the file name; additionally, information technology can also set the message from the server. If the response is to the error message, and the upload failed, the event should be canceled, so the file loader will change its status to error.
For example if the response is fileUrl|optionalErrorMessage:
editor.on( 'fileUploadResponse', function( evt ) { // Foreclose the default response handler. evt.end(); // Get XHR and response. var data = evt.data, xhr = data.fileLoader.xhr, response = xhr.responseText.split( '|' ); if ( response[ i ] ) { // An mistake occurred during upload. data.message = response[ one ]; evt.abolish(); } else { data.url = response[ 0 ]; } } ); # Integration with CKFinder
CKEditor 4 can be easily integrated with CKFinder, an advanced Ajax file manager. See CKFinder Integration for more information.
Uploading dropped or pasted files volition work for CKFinder ii.5+ and CKFinder 3.x.
# Example — Custom uploadUrl for CKFinder
As mentioned above, if CKEDITOR.config.uploadUrl is not set, CKEDITOR.config.filebrowserUploadUrl is used past the Upload Image plugin. Equally a result, for CKFinder there is no demand to specify CKEDITOR.config.uploadUrl separately.
If for any reason y'all need to practise this, annotation that the path to the connector must include responseType=json in the query string to make CKFinder return a response in the proper JSON format.
config.extraPlugins = 'uploadimage'; config.uploadUrl = '/ckfinder/core/connector/php/connector.php?command=QuickUpload&type=Files&responseType=json'; # Dropping and Pasting Upload Demo
Come across the working "Uploading Dropped and Pasted Images" sample for an instance of the Upload Image plugin integration with CKEditor iv and CKFinder.
# Further Reading
For more information on pasting, dropping and uploading files with CKEditor 4 refer to the post-obit articles:
- File Director Integration
- Avant-garde File Manager Configuration
- CKFinder Integration
- File Browser API - Creating a Custom File Manager
- Adding the File Manager to Dialog Windows
- Dropping and Pasting into Editor Content
- Clipboard Integration
Source: https://ckeditor.com/docs/ckeditor4/latest/guide/dev_file_upload.html
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