api.py 文件源码

def resolveTemplate(template, model, obj) :
    from rdf_io.models import getattr_path, ConfigVar
    vals = { 'model' : model }
    for (literal,param,repval,conv) in Formatter().parse(template) :
        if param and param != 'model' :
            if( param[0] == '_' ) :
                val = ConfigVar.getval(param[1:])
                if val:
                    vals[param] = val
                else:
                    raise Exception( "template references unset ConfigVariable %s" % param[1:])
            else:
                try:
                    vals[param] = iter(getattr_path(obj,param)).next()
                except:
                    if param == 'slug'  :
                        vals[param] = obj.id

    try:
        return template.format(**vals)
    except KeyError as e :
        raise KeyError( 'Property %s of model %s not found when creating API URL' % (e,model))