Usage

Since cone.app not knows about the underlying data, cone.fileupload only provides an abstract server implementation.

So first we need to provide a model.

from cone.app.model import BaseNode
from pyramid.security import ALL_PERMISSIONS
from pyramid.security import Allow
from pyramid.security import Deny
from pyramid.security import Everyone

ACL = [
    (Allow, 'role:manager', ['add', 'delete']),
    (Allow, Everyone, ['login']),
    (Deny, Everyone, ALL_PERMISSIONS),
]

class Container(BaseNode):
    __acl__ = ACL

    def __call__(self):
        """Persistence happens here.
        """

class File(BaseNode):
    __acl__ = ACL

    # allow setting any value types
    child_constraints = None

Now we need to provide a concrete FileUploadHandle implementation for our model.

from cone.fileupload.browser.fileupload import FileUploadHandle
from pyramid.view import view_config

@view_config(
    name='fileupload_handle',
    context=Container, # <- here the view gets bound to our model
    accept='application/json',
    renderer='json',
    permission='add')
class ContainerFileUploadHandle(FileUploadHandle):

    def create_file(self, stream, filename, mimetype):
        # this function gets called for persisting uploaded files
        file = self.model[filename] = File()
        file['body'] = stream.read()
        return {
            'name': filename,
            'size': len(file['body']),
            'view_url': '/{0}'.format(file.name),
            'download_url': '/{0}/download'.format(file.name),
            'delete_url': '/{0}/filedelete_handle'.format(file.name),
            'delete_type': 'GET',
        }

    def read_existing(self):
        # this function gets called for initial reading of existing files
        files = list()
        for node in self.model.values():
            files.append({
                'name': node.name,
                'size': len(node['body']),
                'view_url': '/{0}'.format(node.name),
                'download_url': '/{0}/download'.format(node.name),
                'delete_url': '/{0}/filedelete_handle'.format(node.name),
                'delete_type': 'GET',
            })
        return files

Optionally we might want to provide a custom fileupload tile for our model.

from cone.tile import tile
from cone.fileupload.browser.fileupload import FileUploadTile

@tile(
    name='fileupload',
    path='cone.fileupload:browser/fileupload.pt',
    interface=Container,
    permission='add')
class ContainerFileUploadTile(FileUploadTile):
    accept_file_types = r'/(\.|\/)(gif|jpg)$/i'

The file upload actions are either rendered as dedicated tile by name fileupload_toolbar or integrated into the context menu. If it's desired to display the action in the context menu, fileupload_contextmenu_actions flag must be set on model properties.

Contributors

Robert Niederreiter

conestack/cone.fileupload

Usage

Contributors