Ruby

List Files and Folders in a SharePoint Documents Library

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This example shows how to use Chilkat's HttpCurl class to list the files and folders in the root of a SharePoint Documents document library. In Microsoft Graph, a SharePoint document library is represented as a drive. The example demonstrates how HttpCurl automatically resolves the SharePoint site name to a site ID, finds the drive ID for the Documents library, and then retrieves the children of the library's root folder.

Ruby

require 'chilkat'

success = false

# This example lists the files and folders in the root of the SharePoint
# Documents document library.
# 
# In Microsoft Graph terminology, a SharePoint document library is represented
# as a "drive".  The default document library is commonly named "Documents".
# This example shows how HttpCurl can automatically resolve the needed values:
# 
#   site_name  ->  site_id
#   site_id    ->  document_library_id
# 
# After those values are known, the final request lists the children of the
# root folder in the Documents document library.

success = false

# --------------------------------------------------------------------------------------------------------
# Before running this example, create an Azure App Registration and grant it
# the Microsoft Graph permissions required to access SharePoint.
# 
# The application will authenticate using OAuth2 Client Credentials.
# See:
# How to Create SharePoint App Registration for OAuth 2.0 Client Credentials
# --------------------------------------------------------------------------------------------------------

# Build a JSON authentication configuration.
# HttpCurl will use this information to automatically obtain OAuth2 access tokens.
jsonAuth = Chilkat::CkJsonObject.new()

# Enable secret lookup.
# 
# Instead of hard-coding sensitive values such as the client ID,
# client secret, and token endpoint, secret specification strings
# are used.  Chilkat automatically retrieves the actual values from
# Windows Credential Manager (Windows) or Apple Keychain (macOS).
# 
# See:
# Secret Specification Strings
jsonAuth.put_EnableSecrets(true)

success = jsonAuth.UpdateString("oauth2.client_id","!!sharepoint|oauth2|client_id")
if (success == true)
    success = jsonAuth.UpdateString("oauth2.client_secret","!!sharepoint|oauth2|client_secret")
end

if (success == true)
    success = jsonAuth.UpdateString("oauth2.token_endpoint","!!sharepoint|oauth2|token_endpoint")
end

if (success == false)
    print jsonAuth.lastErrorText() + "\n";
    exit
end

# Request Microsoft Graph permissions that were granted to the application.
jsonAuth.UpdateString("oauth2.scope","https://graph.microsoft.com/.default")

# ---------------------------------------------------------------------------------------------------

curl = Chilkat::CkHttpCurl.new()

# Associate the OAuth2 configuration with HttpCurl.
# 
# When the request is executed, Chilkat automatically obtains an access token
# if needed and adds the Authorization: Bearer header to the HTTP request.
curl.SetAuth(jsonAuth)

# Define variables whose values are already known.
# 
# These variables are referenced in curl commands using
# {{variable_name}} substitution syntax.
curl.SetVar("sharepoint_hostname","example.sharepoint.com")
curl.SetVar("site_name","test")

# The final request needs a Microsoft Graph site ID.
# 
# Because the application only knows the SharePoint site name,
# define a helper function that can retrieve the site record.
# HttpCurl can execute this function automatically when it needs
# to resolve the site_id variable.
curl.AddFunction("getSite","GET https://graph.microsoft.com/v1.0/sites/root:/sites/{{site_name}}")

# Extract the "id" field from the getSite response and store it
# in the HttpCurl variable named "site_id".
curl.AddOutput("getSite","id","site_id")

# The next value needed is the drive ID for the Documents document library.
# 
# This function lists the drives, also known as document libraries,
# belonging to the SharePoint site.
curl.AddFunction("getDrives","GET https://graph.microsoft.com/v1.0/sites/{{site_id}}/drives")

# Extract the ID of the drive whose name is "Documents".
# 
# AddOutput2 searches an array in the JSON response.  In this case:
# 
#   response array: value
#   match field:    name
#   match value:    Documents
#   case-sensitive: true
#   output field:   id
#   variable name:  document_library_id
# 
# The result is that document_library_id will contain the drive ID
# for the Documents document library.
curl.AddOutput2("getDrives","value","name","Documents",true,"id","document_library_id")

# The target Microsoft Graph request:
# 
# GET https://graph.microsoft.com/v1.0/sites/{{site_id}}/drives/{{document_library_id}}/root/children
# 
# This lists the files and folders in the root folder of the Documents
# document library.
# 
# The {{site_id}} and {{document_library_id}} variables are not set directly
# by this program.  HttpCurl resolves them automatically by running the
# helper functions defined above.
curlCommand = "GET https://graph.microsoft.com/v1.0/sites/{{site_id}}/drives/{{document_library_id}}/root/children"

# Execute the request.
# 
# HttpCurl examines the target request and determines that it requires
# both site_id and document_library_id.
# 
# The execution plan becomes:
# 
#   1) Execute getSite to obtain site_id.
#   2) Execute getDrives to obtain document_library_id.
#   3) Substitute both variables into the target request.
#   4) Execute the root/children request.
# 
# The final HTTP response returned by DoYourThing is always the response
# from the target request, which is the last step in the plan.
success = curl.DoYourThing(curlCommand)
if (success == false)
    print curl.lastErrorText() + "\n";
    exit
end

# A successful Graph response should return HTTP 200.
# Any other status code typically indicates an authentication,
# permission, site lookup, or document library lookup error.
statusCode = curl.get_StatusCode()
if (statusCode != 200)
    print curl.responseBodyStr() + "\n";
    print "status code = " + statusCode.to_s() + "\n";
    exit
end

# The response body contains a JSON array named "value".
# Each element represents one file or folder in the root of the
# Documents document library.
json = Chilkat::CkJsonObject.new()
json.put_EmitCompact(false)
curl.GetResponseJson(json)
print json.emit() + "\n";
print "" + "\n";

# Count the number of items returned in the "value" array.
# 
# This includes both files and folders.
numFiles = json.SizeOfArray("value")
print "Number of files: " + numFiles.to_s() + "\n";
print "" + "\n";

# Iterate over the files and folders returned by Microsoft Graph
# and display selected properties for each item.
i = 0
while i < numFiles
    json.put_I(i)

    print "name: " + json.stringOf("value[i].name") + "\n";
    print "webUrl: " + json.stringOf("value[i].webUrl") + "\n";
    print "size: " + json.stringOf("value[i].size") + "\n";
    print "id: " + json.stringOf("value[i].id") + "\n";
    print "-" + "\n";
    i = i + 1
end