How can I send a form without the image (filename)-CodePudding

I test a post with filename but in postman if I don't add image then I have an image undefine, that is ok. But I can't send it if the image don't pass as null.

Here is my controller with filename

module.exports.createComment  = async (req, res) => {
  try {
    if (!req.body.message) {
      res.status(400).send({
        message: "Content can not be empty!"
      });
    }
    let { id, message, date, image} = req.body;
    image = `${req.protocol}://${req.get("host")}/images/${req.file.filename}`,
    Comment.create({
      id, message, date, image
    }).then((comment) => res.status(201).send(comment))
  } catch (error) {
    console.log(error);
    return res.send(`Error: ${error}`);
  }
};

My response without image on Postman : Error: TypeError: Cannot read property 'filename' of undefined

CodePudding user response：

You should check the req.file because access filename. Because when you don't pass it, req.file will be undefined which cannot access filename

let { id, message, date, image } = req.body;
if (req.file) {
    image = `${req.protocol}://${req.get("host")}/images/${req.file.filename}`
} else {
    image = null;
}