crm 4 UserHasRole

 //获取当前人员是否含有指定角色权限 
function UserHasRole(roleName)
{
 //get Current User Roles, oXml is an object
 var oXml = GetCurrentUserRoles();
 if(oXml != null)
 {
  //select the node text
  var roles = oXml.selectNodes("//BusinessEntity/q1:name");
  if(roles != null)
  {
   for( i = 0; i < roles.length; i++)
   {
    if(roles[i].text == roleName)
    {
     //return true if user has this role
     return true;
    }
   }
  }
 }
 //otherwise return false
 return false;
}

CRM 2011 

Xrm.Page.context.getUserRoles()

function UserHasRole(roleName)
{
    var serverUrl = Xrm.Page.context.getServerUrl();

    var oDataEndpointUrl = serverUrl + "/XRMServices/2011/OrganizationData.svc/";
    oDataEndpointUrl += "RoleSet?$top=1&$filter=Name eq '" + roleName + "'";

    var service = GetRequestObject();

    if (service != null)
    {
        service.open("GET", oDataEndpointUrl, false);
        service.setRequestHeader("X-Requested-Width", "XMLHttpRequest");
        service.setRequestHeader("Accept", "application/json, text/javascript, */*");
        service.send(null);

        var requestResults = eval('(' + service.responseText + ')').d;

        if (requestResults != null && requestResults.length == 1)
        {
            var role = requestResults[0]; 

            var id = role.RoleId;

            var currentUserRoles = Xrm.Page.context.getUserRoles();

            for (var i = 0; i < currentUserRoles.length; i++)
            {
                var userRole = currentUserRoles[i];

                if (GuidsAreEqual(userRole, id))
                {
                    return true;
                }
            }
        }
    }

    return false;
}

function GetRequestObject()
{
    if (window.XMLHttpRequest)
    {
        return new window.XMLHttpRequest;
    }
    else
    {
        try
        {
            return new ActiveXObject("MSXML2.XMLHTTP.3.0");
        }
        catch (ex)
        {
            return null;
        }
    }
}

function GuidsAreEqual(guid1, guid2)
{
    var isEqual = false;

    if (guid1 == null || guid2 == null)
    {
        isEqual = false;
    }
    else
    {
        isEqual = guid1.replace(/[{}]/g, "").toLowerCase() == guid2.replace(/[{}]/g, "").toLowerCase();
    }

    return isEqual;
}

以下文章引自: http://community.dynamics.com/crm/b/crmmitchmilam/archive/2010/11/16/retreiving-user-roles-in-crm-2011

Retreiving User Roles in CRM 2011

As I was producing the associated documentation for my CRM Migration Assistant application, I decided to explore a comparison between a technique that we had to do the “hard way” in CRM 4.0 and a technique that is built into CRM 2011

The technique in question is retrieving a user’s security roles in order to perform some role-specific actions.

CRM 4.0 JavaScript

Jim Wang, friend and fellow MVP has an excellent article and JavaScript describing how to retrieve a user’s security roles in order to perform operations that are specifically for a certain type of CRM user:

//check if the current user has the 'System Administrator' role

alert(UserHasRole("System Administrator"));

function UserHasRole(roleName)

{

 //get Current User Roles, oXml is an object

 var oXml = GetCurrentUserRoles();

 if(oXml != null)

 {

  //select the node text

  var roles = oXml.selectNodes("//BusinessEntity/q1:name");

  if(roles != null)

  {

   for( i = 0; i < roles.length; i++)

   {

    if(roles[i].text == roleName)

    {

     //return true if user has this role

     return true;

    }

   }

  }

 }

 //otherwise return false

 return false;

}

I use this code in many different situations to show and hide CRM form elements for specific people.

CRM 2011 SDK Samples

If you look at the files included with the CRM 2011 SDK, you’ll find some sample JavaScript in the folder:

sdkSampleCodeJSFormScripts

If you load that solution into Visual Studio, you can see the many cool and interesting additions to the CRM 2011 JavaScript object model.

If you open SDK.ContextSamples.js, you’ll see some of the code I’ll be using today.

Xrm.Page.context.getUserRoles()

Jim’s CRM 4.0 code uses a SOAP call retrieve the security roles for a user.  Lucky for us, this functionality is now built into CRM 2011 in the method:

Xrm.Page.context.getUserRoles()

Which returns an array of strings representing the GUID values of each of the security roles that the user is associated with.

This is really great, but I would like to refer to my security roles by name since it’s easier to remember and understand than a GUID.  So, I had to add some extra code to handle that requirement.

CRM 2011 JavaScript

As I mentioned, I took the SDK sample code, modified it a bit, and replicated Jim’s functionality exactly, using the following BLOCKED SCRIPT

function UserHasRole(roleName)
{
    var serverUrl = Xrm.Page.context.getServerUrl();

    var oDataEndpointUrl = serverUrl + "/XRMServices/2011/OrganizationData.svc/";
    oDataEndpointUrl += "RoleSet?$top=1&$filter=Name eq '" + roleName + "'";

    var service = GetRequestObject();

    if (service != null)
    {
        service.open("GET", oDataEndpointUrl, false);
        service.setRequestHeader("X-Requested-Width", "XMLHttpRequest");
        service.setRequestHeader("Accept", "application/json, text/javascript, */*");
        service.send(null);

        var requestResults = eval('(' + service.responseText + ')').d;

        if (requestResults != null && requestResults.length == 1)
        {
            var role = requestResults[0]; 

            var id = role.RoleId;

            var currentUserRoles = Xrm.Page.context.getUserRoles();

            for (var i = 0; i < currentUserRoles.length; i++)
            {
                var userRole = currentUserRoles[i];

                if (GuidsAreEqual(userRole, id))
                {
                    return true;
                }
            }
        }
    }

    return false;
}

function GetRequestObject()
{
    if (window.XMLHttpRequest)
    {
        return new window.XMLHttpRequest;
    }
    else
    {
        try
        {
            return new ActiveXObject("MSXML2.XMLHTTP.3.0");
        }
        catch (ex)
        {
            return null;
        }
    }
}

function GuidsAreEqual(guid1, guid2)
{
    var isEqual = false;

    if (guid1 == null || guid2 == null)
    {
        isEqual = false;
    }
    else
    {
        isEqual = guid1.replace(/[{}]/g, "").toLowerCase() == guid2.replace(/[{}]/g, "").toLowerCase();
    }

    return isEqual;
}

Conclusion

As you can see, this is not a lot of code and with CRM 2011’s ability to create a Web Resource, I can add these functions to a JavaScript library, reference that library on the form, and just use the following code where necessary:

If (UserHasRole("System Administrator"))

{

 // do something important

}

The secondary affect of using this new code is I don’t have to change my CRM 4.0 JavaScript since I duplicated the CRM 4.0 functionality in CRM 2011 and the usage show above, remains the same.