ckeditor with image upload
Inside the config.js of ckeditor add the following code
CKEDITOR.editorConfig = function( config ) {
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config.filebrowserUploadMethod = 'form',
config.filebrowserUploadUrl = '/api/v1/ckeditor/upload-image',
config.image_previewText = CKEDITOR.tools.repeat(' ', 1);
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};
For more details :
https://ckeditor.com/docs/ckeditor4/latest/api/CKEDITOR_config.html#cfg-filebrowserUploadMethod