diagram.py 文件源码

def generate_mapping_subgraph(table):
    subgraph = Digraph(table.name, node_attr={
        'width:': '20',
        'fixed_size': 'shape'
    })

    subgraph.node(table.name, shape='box')

    for osm_key, osm_values in table.mapping:
        node_name = 'key_' + normalize_graphviz_labels(osm_key)
        subgraph.node(node_name, label=osm_key, shape='box')

        subgraph.edge(node_name, table.name,
                      label=values_label(osm_values))

    return subgraph