How to get access token for creating dataset in Power BI through REST API from Rails APP

Question

Currently I have only client_id and client_secret ,what other parameter do I need for creating dataset

Answer 1

I finally got this. First of all we have to connect our Azure AD and power BI application.

def index
  update_token
  if session['access_token']

  redirect_to YOUR_ACTION
  else
    client = get_client
    a = client.auth_code.authorize_url(:client_id => CLIENT_ID, :resource => RESOURCE_ID, :redirect_uri => REDIRECT_URI)
    redirect_to(a) 
  end
end

def callback
  begin
    @code = params[:code]
    client = get_client
    token = client.auth_code.get_token(@code, :redirect_uri => REDIRECT_URI, )
    session['access_token'] = token.token
    if token.token.present?
     YOUR_ACTION
    end
  end
end

def update_token
  token = session['access_token']
  refresh_token = session['refresh_token']

  expire_at = session['expire_at']
  @access_token = OAuth2::AccessToken.from_hash(get_client, { :access_token => token, :refresh_token =>  refresh_token, :expire_at => expire_at, :header_format => 'Bearer %s' } )

  if @access_token.expired?

   @access_token = @access_token.refresh!;
   session['access_token'] = @access_token.token
   session['refresh_token'] = @access_token.refresh_token
   session['expire_at'] = @access_token.expire_at  
   session['instance_url']  = @access_token.params['instance_url']
  end
end

def get_client
  client = OAuth2::Client.new(CLIENT_ID, CLIENT_SECRET, :site => AUTHORITY, :authorize_url =>  AUTHORIZE_URL, :token_url => TOKEN_URL )
  client
end

def azure
  callback
end