controller_trackview.py 文件源码

def tracks(db):
    selected_filters = {}
    for filt in request.query.keys():
        val = request.query.get(filt)
        if val == '':
            # unspecified min/max numeric values, e.g.
            continue

        # figure out query string without this selection (for backing out in web interface)
        querystring_without = '&'.join("{}={}".format(key, val) for key, val in request.query.items() if key != filt)
        # store for showing in page
        selected_filters[filt] = {
            'val': val,
            'querystring_without': querystring_without
        }

    track_data = _get_track_data(db, selected_filters)

    # possible filter params/values for selected rows
    possible_filters = _get_filters(track_data, selected_filters) if track_data else []

    return template('tracks',
                    tracks=track_data,
                    filters=possible_filters,
                    selected=selected_filters,
                    query_string=request.query_string,
                    query=request.query
                    )