views.py 文件源码

def lookup(dictionary, key):
    """
    Utility template filter, as Django forbids argument passing in templates. Used for filtering
    out values, e.g. for metadata, of list has EDDObject items and type is a MetadataType:
    {%% for obj in list %%}
    {{ obj.metadata|lookup:type }}
    {%% endfor %%}
    """
    return dictionary.get(key, settings.TEMPLATE_STRING_IF_INVALID)