Rename an image before upload in angular-CodePudding

I'm working with image upload in angular. The image uploading part works fine but now the problem is I should rename the image before uploading. I want to know if it will be easier to do so from the fronend or from the backend. The framework used for frontend is angularand backend is nodejs. Hope someone will help me with this since I dont have much experience with this framework Thank you.

CodePudding user response：

This is an very opinionated question. On the frontend I imagine your using some sort of form to attach the file. On frontend it could be as easy as this:

formData.append('userpic', myFileInput.files[0], 'chris.jpg');

https://developer.mozilla.org/en-US/docs/Web/API/FormData/append

CodePudding user response：

i can show you an example of code i use to upload a profile image in nodeJS express backend as joosep has given an example for the frontend. my code is as follows:

exports.uploadImage = (req, res, next) => {
  const url = req.protocol   '://'   req.get('host')
  profileRepository
    .findOne({ _id: req.params.id })
    .then((response) => {
      const fetchedUser = response;
      fetchedUser.imagePath = url   '/images/'   req.file.filename;
      profileRepository
        .updateOne({ _id: req.params.id }, fetchedUser)
        .then((response) => {
          return res.status(200).json({
            message: 'profileimage updated',
          });
        })
        .catch((error) => {
          return res.status(500).json({
            message: 'uploading image failed',
          });
        });
    })
    .catch((error) => {
      return res.status(404).json({
        message: 'fetching user failed',
      });
    });
};

as you can see i set the name for the image when assigining an imagepath for the fetchedUser. in the example i am just using the filename which comes from the frontend request but you can use any name/string you want instead :)

hopefully this can help you choosing the best implementation for your use case