image-uploading

来源： https://stackoverflow.com/questions/28521419/how-uploading-data-to-a-cdn-work

问题 I'm having trouble understanding how a local file path from a smartphone could possibly get uploaded on the server side with a Rails api for instance. The file path that we're sending to the backend doesn't mean anything to the server? I'm getting a uri from the response like this: file:///Users/.../Documents/images/5249F841-388B-478D-A0CB-2E1BF5511DA5.jpg): I have tried to send something like this to the server: let apiUrl = 'https://vnjldf.ngrok.io/api/update_photo' let uriParts = uri.split

问题 I tried to find how to select and upload multiple images in flutter but most of the plugins are not working or I did not understand them well. I found little application but it selects and upload only one picture. How to change this code that user can select and upload multiple pictures or is there any other alternatives. Please write in details, i am freshman in coding. Thanks in advance. import 'package:flutter/material.dart'; import 'dart:io'; import 'package:http/http.dart' as http;

问题 When adding an image by nodejs in Angular project's assets folder Angular needs a rebuild to show the image by path, how can I get images without a rebuild? 回答1: I suppose that you are talking about ng serve and not actual deployment. The assets are meant to be static updated at build time (ng build or ng serve). I would upload the images to a different directory outside of angular and fetch them from there in your angular app as is described at this link here 来源： https://stackoverflow.com

问题 When adding an image by nodejs in Angular project's assets folder Angular needs a rebuild to show the image by path, how can I get images without a rebuild? 回答1: I suppose that you are talking about ng serve and not actual deployment. The assets are meant to be static updated at build time (ng build or ng serve). I would upload the images to a different directory outside of angular and fetch them from there in your angular app as is described at this link here 来源： https://stackoverflow.com

问题 I am currently trying to make an image upload tool, which allows you to crop an image before uploading it as a profile image. The crop box is resizable, and whatever is within the bounds of the box is shown as a preview in a seperate canvas on the webpage. At the moment, I have the following code, which takes the area within the cropper on the first canvas (context) and places it on the second canvas (previewContext). function previewCroppedImage() { var max_height = 100; var max_width = 100;

问题 I'm using Jodit to create a wysiwyg editor. I have a coldfusion file (uploadimage2.cfm) that is empty. When I send the uploaded img to that empty coldfusion page I get an error that coldfusion can't find the variable "FILES". Jodit is sending the following form data to uploadimage2.cfm: ------WebKitFormBoundaryIrkl9oNQedwACmBe Content-Disposition: form-data; name="path" ------WebKitFormBoundaryIrkl9oNQedwACmBe Content-Disposition: form-data; name="source" default -----

问题 I read on this docs : https://github.com/pqina/vue-filepond I try to add like this : <FilePond allowMultiple="true" accepted-file-types="image/jpg, image/jpeg, application/pdf" maxFileSize="2MB" required="true"/> multiple, validation file type, max file works But, required does not works How can I solve this problem guys? 回答1: Using the v-bind:required prop works: <form method="post" action=""> <file-pond v-bind:required="true"/> <button type="submit">submit</button> </form> Related GitHub

问题 I am able to upload a single image with the following code. If I select multiple images then only the last image among the selected image is getting uploaded. models.py class Image(models.Model): property_id = models.ForeignKey( 'properties.Address', null=False, default=1, on_delete=models.CASCADE ) image = models.ImageField(upload_to=directory_path) serializers.py class ImageSerializer(serializers.ModelSerializer): class Meta: model = Image fields = ( 'property_id', 'image' ) views.py class

问题 I'm using UIImagePickerController to take a photo in portrait mode on the iphone and save to the web. The photo appears in portrait on the phone, but rotates 90 degrees on the web. If I download the photo and look at it in Preview (mac) or Photoshop (mac or pc) it is in portrait again. In Windows Picture Viewer (pc) it's rotated to landscape. Do I need to apply a rotation transform to the image data before uploading? Will I then also need to remove the meta-data that's rotating it in