About file bytes field

[greyli]

To keep it clear, I restrict the File field to be a binary file and validate its type when deserializing the request data.

For base64-encoded files, I'm thinking of creating a FileByte field:

class FileByte(String):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.metadata['type'] = 'string'
        self.metadata['format'] = 'byte'

    default_error_messages = {
        'invalid': 'Not a valid byte file.',
    }

    def _deserialize(self, value, attr, data, **kwargs) -> t.Any:
        if not isinstance(value, str):
            raise self.make_error('invalid_byte')
        else:
            return bytes(value, encoding='ascii')

but I'm not sure if it is the correct way to do this.

And to handle this field, the location should be json or form instead of files, the field name may not intuitive enough.

---

Improve the File field serialization:

• Allow setting custom response content type
• Convert bytes to string?

[Weitspringer]

Sorry that I don't have an answer but another question. Since you seem to be working with the File field I wanted to ask something as I am unable to figure it out:
Is it possible to define a schema for multiple files? I am starting to think it is only supposed to work as a single file input field.
I use the following:

class UploadIn(Schema):
    file = File()

@app.post('/upload')
@app.input(UploadIn(), location='files')
def upload(data):
    print(data)
    files = data['file']

If I use @app.input(UploadIn(many=True), location='files'), this does not work properly.
Do you have any experience regarding that by any chance?

[Weitspringer]

Sorry that I don't have an answer but another question. Since you seem to be working with the File field I wanted to ask something as I am unable to figure it out: Is it possible to define a schema for multiple files? I am starting to think it is only supposed to work as a single file input field. I use the following:

class UploadIn(Schema):
    file = File()

@app.post('/upload')
@app.input(UploadIn(), location='files')
def upload(data):
    print(data)
    files = data['file']

If I use @app.input(UploadIn(many=True), location='files'), this does not work properly. Do you have any experience regarding that by any chance?

Never mind, I had to do

from apiflask import Schema
from apiflask.fields import File, List

class UploadIn(Schema):
    file = List(File())