def upload():
file_raw = request.files['csvfile']
file_handler = CSVFileHandler(settings.STORAGE_DIR)
short_hash = file_handler.save_upload(
request.files['csvfile'],
hash_len=settings.HASH_PREFIX_CHARS,
sniff_lines=settings.SNIFF_LINES)
return flask.redirect(flask.url_for('scatter_frame', filehash=short_hash))
def scatter_frame(filehash):
g.filehash = filehash
file_handler = CSVFileHandler(settings.STORAGE_DIR)
try:
stats_data = file_handler.load_file(filehash)
except IOError as ioe:
app.logger.info(repr(ioe))
flask.abort(404)
except Exception as e:
app.logger.exception(e)
return flask.make_response(
flask.render_template('error_500.html'), 500)
g.column_names = stats_data.column_names
g.rows = stats_data.data_list
return flask.render_template("scatter_frame.html")
def regress_js(filehash):
file_handler = CSVFileHandler(settings.STORAGE_DIR)
try:
stats_data = file_handler.load_file(filehash)
except:
flask.abort(404)
regression_params = RegressionParams.build_from_flask_args(request.args)
sr = get_stats_runner(stats_data, regression_params)
sr.run()
result = sr.to_dict()
# Trim a couple things from the result -- won't need 'em
del result['all_point_data']
del result['all_point_cols']
http_result = flask.jsonify(result)
http_result.headers['Cache-Control'] = 'max-age=300000000,public'
http_result.headers['Expires'] = '31 December 2037 23:59:59 GMT'
return http_result
def regress_csv(filehash):
import StringIO
file_handler = CSVFileHandler(settings.STORAGE_DIR)
try:
stats_data = file_handler.load_file(filehash)
except:
flask.abort(404)
regression_params = RegressionParams.build_from_flask_args(request.args)
sr = get_stats_runner(stats_data, regression_params)
sr.run()
result = sr.to_dict()
# Build us a string in memory
out_buf = StringIO.StringIO()
writer = csv.writer(out_buf, dialect='excel')
writer.writerow(result['all_point_cols'])
writer.writerows(result['all_point_data'])
response = flask.make_response(out_buf.getvalue())
response.headers["Content-Disposition"] = "attachment;filename=data.csv"
response.headers["Content-Type"] = "text/csv"
return response
