Sample code for 30+ languages & platforms
Ruby

MS Graph Calendar List Events

See more Microsoft Calendar Examples

Retrieve a list of events in a calendar. The list contains single instance meetings and series masters.

For more details, see https://docs.microsoft.com/en-us/graph/api/calendar-list-events?view=graph-rest-1.0

Chilkat Ruby Downloads

Ruby
require 'chilkat'

success = false

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

http = Chilkat::CkHttp.new()

# Use your previously obtained access token as shown here:
#    Get Microsoft Graph OAuth2 Access Token with Calendars.ReadWrite scope.

jsonToken = Chilkat::CkJsonObject.new()
success = jsonToken.LoadFile("qa_data/tokens/msGraphCalendar.json")
if (success == false)
    print jsonToken.lastErrorText() + "\n";
    exit
end

http.put_AuthToken(jsonToken.stringOf("access_token"))

# Specify the calendar id
http.SetUrlVar("id","AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAgEGAAAA5_vF7TKKdE6bGCRqXyl2PQAClEpRTgAAAA==")
# Send a GET request to https://graph.microsoft.com/v1.0/me/calendars/{$id}/events
strResponse = http.quickGetStr("https://graph.microsoft.com/v1.0/me/calendars/{$id}/events")
if (http.get_LastMethodSuccess() == false)
    print http.lastErrorText() + "\n";
    exit
end

json = Chilkat::CkJsonObject.new()
json.Load(strResponse)
json.put_EmitCompact(false)

if (http.get_LastStatus() != 200)
    print json.emit() + "\n";
    print "Failed, response status code = " + http.get_LastStatus().to_s() + "\n";
    exit
end

print json.emit() + "\n";

# Sample output:
# (See parsing code below..)

# {
#   "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('admin%40chilkat.io')/calendars('AQMkADAwATM0MDAAMS1i ... AClEpRTgAAAA%3D%3D')/events",
#   "value": [
#     {
#       "@odata.etag": "W/\"5+vF7TKKdE6bGCRqXyl2PQAClIgmmw==\"",
#       "id": "AQMkADAwATM0MDAAM ... AApRZ7JkAAAA=",
#       "createdDateTime": "2019-04-26T14:31:39.8791929Z",
#       "lastModifiedDateTime": "2019-04-26T14:31:41.2753537Z",
#       "changeKey": "5+vF7TKKdE6bGCRqXyl2PQAClIgmmw==",
#       "categories": [
#       ],
#       "originalStartTimeZone": "Pacific Standard Time",
#       "originalEndTimeZone": "Pacific Standard Time",
#       "iCalUId": "040000008200E ... A230FEBFE5F7486A",
#       "reminderMinutesBeforeStart": 15,
#       "isReminderOn": true,
#       "hasAttachments": false,
#       "subject": "Let's go for lunch",
#       "bodyPreview": "Does mid month work for you?",
#       "importance": "normal",
#       "sensitivity": "normal",
#       "isAllDay": false,
#       "isCancelled": false,
#       "isOrganizer": true,
#       "responseRequested": true,
#       "seriesMasterId": null,
#       "showAs": "busy",
#       "type": "singleInstance",
#       "webLink": "https://outlook.live.com/owa/?itemid=AQMkADAwATM0MDAAMS1iNTcwLWI2NT ... gkal8pdj0AApRZ7JkAAAA%3D&exvsurl=1&path=/calendar/item",
#       "onlineMeetingUrl": null,
#       "recurrence": null,
#       "responseStatus": {
#         "response": "organizer",
#         "time": "0001-01-01T00:00:00Z"
#       },
#       "body": {
#         "contentType": "html",
#         "content": "<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\">\r\n<meta content=\"text/html; charset=us-ascii\">\r\n</head>\r\n<body>\r\nDoes mid month work for you?\r\n</body>\r\n</html>\r\n"
#       },
#       "start": {
#         "dateTime": "2019-11-15T20:00:00.0000000",
#         "timeZone": "UTC"
#       },
#       "end": {
#         "dateTime": "2019-11-15T22:00:00.0000000",
#         "timeZone": "UTC"
#       },
#       "location": {
#         "displayName": "Harry's Bar",
#         "locationType": "default",
#         "uniqueId": "Harry's Bar",
#         "uniqueIdType": "private"
#       },
#       "locations": [
#         {
#           "displayName": "Harry's Bar",
#           "locationType": "default",
#           "uniqueId": "Harry's Bar",
#           "uniqueIdType": "private"
#         }
#       ],
#       "attendees": [
#         {
#           "type": "required",
#           "status": {
#             "response": "none",
#             "time": "0001-01-01T00:00:00Z"
#           },
#           "emailAddress": {
#             "name": "Adele Vance",
#             "address": "adelev@contoso.onmicrosoft.com"
#           }
#         }
#       ],
#       "organizer": {
#         "emailAddress": {
#           "name": "Matt",
#           "address": "outlook_3A33FCEB9B74CC15@outlook.com"
#         }
#       }
#     }
#   ]
# }

# Use this online tool to generate parsing code from sample JSON: 
# Generate Parsing Code from JSON

odataContext = json.stringOf("\"@odata.context\"")
i = 0
count_i = json.SizeOfArray("value")
while i < count_i
    json.put_I(i)
    odataEtag = json.stringOf("value[i].\"@odata.etag\"")
    id = json.stringOf("value[i].id")
    createdDateTime = json.stringOf("value[i].createdDateTime")
    lastModifiedDateTime = json.stringOf("value[i].lastModifiedDateTime")
    changeKey = json.stringOf("value[i].changeKey")
    originalStartTimeZone = json.stringOf("value[i].originalStartTimeZone")
    originalEndTimeZone = json.stringOf("value[i].originalEndTimeZone")
    iCalUId = json.stringOf("value[i].iCalUId")
    reminderMinutesBeforeStart = json.IntOf("value[i].reminderMinutesBeforeStart")
    isReminderOn = json.BoolOf("value[i].isReminderOn")
    hasAttachments = json.BoolOf("value[i].hasAttachments")
    subject = json.stringOf("value[i].subject")
    bodyPreview = json.stringOf("value[i].bodyPreview")
    importance = json.stringOf("value[i].importance")
    sensitivity = json.stringOf("value[i].sensitivity")
    isAllDay = json.BoolOf("value[i].isAllDay")
    isCancelled = json.BoolOf("value[i].isCancelled")
    isOrganizer = json.BoolOf("value[i].isOrganizer")
    responseRequested = json.BoolOf("value[i].responseRequested")
    seriesMasterId = json.stringOf("value[i].seriesMasterId")
    showAs = json.stringOf("value[i].showAs")
    v_type = json.stringOf("value[i].type")
    webLink = json.stringOf("value[i].webLink")
    onlineMeetingUrl = json.stringOf("value[i].onlineMeetingUrl")
    recurrence = json.stringOf("value[i].recurrence")
    responseStatusResponse = json.stringOf("value[i].responseStatus.response")
    responseStatusTime = json.stringOf("value[i].responseStatus.time")
    bodyContentType = json.stringOf("value[i].body.contentType")
    bodyContent = json.stringOf("value[i].body.content")
    startDateTime = json.stringOf("value[i].start.dateTime")
    startTimeZone = json.stringOf("value[i].start.timeZone")
    endDateTime = json.stringOf("value[i].end.dateTime")
    endTimeZone = json.stringOf("value[i].end.timeZone")
    locationDisplayName = json.stringOf("value[i].location.displayName")
    locationLocationType = json.stringOf("value[i].location.locationType")
    locationUniqueId = json.stringOf("value[i].location.uniqueId")
    locationUniqueIdType = json.stringOf("value[i].location.uniqueIdType")
    organizerEmailAddressName = json.stringOf("value[i].organizer.emailAddress.name")
    organizerEmailAddressAddress = json.stringOf("value[i].organizer.emailAddress.address")
    j = 0
    count_j = json.SizeOfArray("value[i].categories")
    while j < count_j
        json.put_J(j)
        # ...
        j = j + 1
    end
    j = 0
    count_j = json.SizeOfArray("value[i].locations")
    while j < count_j
        json.put_J(j)
        displayName = json.stringOf("value[i].locations[j].displayName")
        locationType = json.stringOf("value[i].locations[j].locationType")
        uniqueId = json.stringOf("value[i].locations[j].uniqueId")
        uniqueIdType = json.stringOf("value[i].locations[j].uniqueIdType")
        j = j + 1
    end
    j = 0
    count_j = json.SizeOfArray("value[i].attendees")
    while j < count_j
        json.put_J(j)
        v_type = json.stringOf("value[i].attendees[j].type")
        statusResponse = json.stringOf("value[i].attendees[j].status.response")
        statusTime = json.stringOf("value[i].attendees[j].status.time")
        emailAddressName = json.stringOf("value[i].attendees[j].emailAddress.name")
        emailAddressAddress = json.stringOf("value[i].attendees[j].emailAddress.address")
        j = j + 1
    end
    i = i + 1
end

print "Success." + "\n";