def upload_data(contents, filename):
"""Upload Files and Regenerate the file list."""
if contents:
for i in range(len(filename)):
FileUtils.upload(filename[i], contents[i])
files = FileUtils.files('raw')
if len(files) == 0:
options = [{'label': 'No files uploaded yet!', 'value': 'None'}]
return options
else:
options = [{'label': file, 'value': file} for file in files]
return options
def get_options(dir: str):
files = FileUtils.files(dir)
if len(files) == 0:
return [{'label': 'No files yet!', 'value': 'None'}]
else:
return [{'label': file, 'value': file} for file in files]
'lineHeight': '50px',
'borderWidth': '1px',
'borderStyle': 'dashed',
'borderRadius': '5px',
'textAlign': 'center',
'margin': '10px'
},
multiple=True),
html.Br(),
html.Div([
html.H2("Select a file from all the uploaded files:"),
dcc.Dropdown(id='selected-file',
options=[{
'label': file,
'value': file
} for file in FileUtils.files('raw')],
value=None,
multi=False),
html.Br(),
],
style={
'margin': '10px',
'width': '50%'
}),
html.Div([], id="display-file"),
html.Div([], id="file-properties"),
html.Div([], id="file-separator-do-nothing"),
html.Div([], id="file-header-do-nothing")
])
'width': '50%',
'height': '50px',
'lineHeight': '50px',
'borderWidth': '1px',
'borderStyle': 'dashed',
'borderRadius': '5px',
'textAlign': 'center',
'margin': '10px'
},
multiple=True),
html.Br(),
html.Div([
html.H2("Select a file from all the uploaded files:"),
dcc.Dropdown(
id = 'selected-file',
options=[{'label':file, 'value':file} for file in FileUtils.files('raw')],
value=None,
multi=False
),
html.Br(),
],
style = {'margin': '10px', 'width': '50%'}),
html.Div([], id = "display-file"),
html.Div([], id = "file-properties"),
html.Div([], id = "file-separator-do-nothing"),
html.Div([], id = "file-header-do-nothing")
])
@app.callback(
Output("selected-file", "options"),
[Input('upload-data', 'contents'),