def delete_file(request, id, name):
fs = FileSystemStorage()
if not experiment.file_exists(id, name):
return render(request, '404.html')
try:
fs.delete('experiments/' + id + '/' + name)
except:
return render(
request, 'nix/experiment.html', {
'experiment_id': id,
'error_message': "The file was not deleted.",
'transformed_files': experiment.get_json_ld_files(id),
'nix_transformed':
experiment.get_nix_transformed_bool_list(id),
'files': experiment.get_nix_files(id)
})
return render(
request, 'nix/experiment.html', {
'experiment_id': id,
'success_message': "The file was deleted.",
'transformed_files': experiment.get_json_ld_files(id),
'nix_transformed': experiment.get_nix_transformed_bool_list(id),
'files': experiment.get_nix_files(id)
})
def download_file(request, id, name):
fs = FileSystemStorage()
if not experiment.file_exists(id, name):
return render(request, '404.html')
return FileResponse(fs.open('experiments/' + id + '/' + name, 'rb'),
content_type='application/force-download')
def process_query(request, id):
error_message = ""
query_result = ""
file_name = request.POST.get("transformed_file", "")
if file_name == "" or not experiment.file_exists(id, file_name):
return render(request, '404.html')
query = request.POST.get("query", "")
module_dir = os.path.dirname(__file__) # get current directory
file_path = os.path.join(module_dir,
'../media/experiments/' + id + '/' + file_name)
g = Graph()
try:
result = g.parse(file_path, format="json-ld")
except:
error_message = "Invalid JSON-LD file."
try:
query_result = g.query(query)
except:
error_message = "An error occurred while executing the query."
return render(
request, 'nix/find.html', {
'error_message': error_message,
'query': query,
'experiment_id': id,
'query_result': query_result,
'transformed_files': experiment.get_json_ld_files(id),
'selected_file': file_name
})
def show_metadata(request, id):
file_name = request.POST.get("transformed_file", "")
if file_name == "" or not experiment.file_exists(id, file_name):
return render(request, '404.html')
file_content = unicode(experiment.read_file(id, file_name), "utf-8")
return render(
request, 'nix/metadata.html', {
'experiment_id': id,
'transformed_files': experiment.get_json_ld_files(id),
'selected_file': file_name,
'file_content': file_content
})
def convert_file(request, id, name):
error_message = ""
success_message = "The requested experiment has been converted."
if not experiment.file_exists(id, name):
return render(request, '404.html')
if not experiment.convert_metadata(id, name):
error_message = "An error occurred while converting the file."
success_message = ""
return render(
request, 'nix/experiment.html', {
'experiment_id': id,
'error_message': error_message,
'success_message': success_message,
'transformed_files': experiment.get_json_ld_files(id),
'nix_transformed': experiment.get_nix_transformed_bool_list(id),
'files': experiment.get_nix_files(id)
})