Question

我还在这里学习，目前正在尝试使用FLASK创建Restful接口

我想要做的是从mongo数据库中提取一组记录。我有find_one（）正常工作，我正在探索如何迭代游标

当我知道至少有5个

时，此代码仅显示一条记录

@app.route('/oer/api/v1.0/getType/', methods = ['GET'])
def getType():

    # Prepare a dictionary object to hold the result of any processing
    result = {}

    # Get hold of DB connection
    db_connection = getDbConnection()
    db = db_connection['OER']
    # Extract all records passed for the paramater that matches "Type": ie MOOC
    oerType = request.args.get("oerType");
    # test to see that there is something in the string if so try to get a record
    # Not doing this test yet lets get it working with a known record first 

    for d in db.oer_records.find({"Type":oerType}): 
        result.update(make_public_page(d))

    return jsonify(result)

所以它有效，但只返回一个json文档而不是一个集合？我认为result.update每次都会附加一条新记录 FYI make_public_page（）删除BISON ID以允许jsonify工作。

这是它返回的内容

{
    "Account No": 1,
    "Country/ continent": "Argentina",
    "Educational Level": "Schools",
    "Educational Level (ISCED)": "2|3",
    "End year": "",
    "Funders": "",
    "Geolocation": "",
    "Initiative HQ address": "",
    "Initiative HQ city": "",
    "Initiative URL": "http://www.gleducar.org.ar",
    "Type": "OER"
}

任何帮助表示感谢。

由于

Answer 1

使用dict.update(dict2)时，您将字典dict2的键值对添加到dict中，这会产生一个大字典。您可能想要做的是创建一个dicts列表。

mylist = []
mylist.append(dict)

翻译成您的代码：

@app.route('/oer/api/v1.0/getType/', methods = ['GET'])
def getType():

    # Prepare a dictionary object to hold the result of any processing
    result = []  # create a list instead of dict

    # Get hold of DB connection
    db_connection = getDbConnection()
    db = db_connection['OER']
    # Extract all records passed for the paramater that matches "Type": ie MOOC
    oerType = request.args.get("oerType");
    # test to see that there is something in the string if so try to get a record
    # Not doing this test yet lets get it working with a known record first 

    for d in db.oer_records.find({"Type":oerType}): 
        result.append(make_public_page(d))  # append to the list of dicts

    return jsonify(items=result)

使用flask和python从mongo中提取多个记录

1 个答案: