I am trying to implement a custom identity provider in Azure Mobile services and I am using an HTML5/JS app to consume it. I am following Josh Twists post on the matter and I have it set up per his instructions. His blog post consumes the new identity table via objC.
I'm very new to this so please bear with me if it's something mundane that I missed. I apologize in advance.
I have successfully consumed other tables in the AMS using JS but this one is returning a Server 500 error. I have updated the Master Key with my own. And added the accounts table and the script he specifies on the insert function for that table.
Here's the JS I am using to try to call the table:
var item = {
username: $("#username").val(),
passowrd: $("#password").val(),
salt: "1234",
login: true
};
client.getTable("accounts").insert(item);
In this case client is my MobileServiceClient and I use the same client.getTable("").insert(obj) to insert into other tables and it works just fine.
One thing I do notice in the insert script I got from the blog is that it says there's an unexpected use of |= and ^.
function slowEquals(a, b) {
var diff = a.length ^ b.length;
for (var i = 0; i < a.length && i < b.length; i++) {
diff |= (a[i] ^ b[i]);
}
return diff === 0;
}
If anyone could help me understand where I am going wrong I would greatly appreciate it. Thank you for taking the time to read this.
EDIT: Thanks Josh. Didn't realize the logs were there. Ended up being an issue of not getting length of undefined... it was undefined because I passed passowrd instead of password. Thanks for your quick help.
Have you checked the logs (in the management portal) for details of the 500 error? Also, I have a web implementation here - http://doto.mobi/web (it's the web version of http://doto.mobi).
You can view source and see that it uses custom identity. It's not exactly the same backend but pretty close, should be a good head start.
Related
and thank you in advance for any advice / insight / assistance that can be provided.
The Background:
We have a soft phone application that is written in Delphi (XE3) for Windows. The ability to answer an incoming call by activating the answer button an a Plantronics Wireless Headset was recently requested. The MSI files were downloaded and executed, and the Plantronics SDK was converted / altered into a Delphi Library File.
I then started to follow the "First Steps" section of the Plantronics Website. I knew that the "First Steps" code would have to be tweaked to fit the Delphi system.
The Problem:
In adjusting the code to work within Delphi, a few translation problems were encountered and resolved. One such error is proving to be stubborn - When an instance of one specific class is created, the error "Class not registered" is thrown.
"First Steps" code for reference -
// Connect to the Plantronics COM API:
myAppName = "SDK .NET COM sample";
sessionManager = new COMSessionManager();
sessionManager.Register(myAppName, out session);
// Hook to SessionManager events:
sessionManagerEvents = sessionManager as ICOMSessionManagerEvents_Event;
if (sessionManagerEvents != null)
{
sessionManagerEvents.onCallStateChanged += SessionManagerEvents_onCallStateChanged;
sessionManagerEvents.onDeviceStateChanged += SessionManagerEvents_onDeviceStateChanged;
}
Delphi Code:
//Connect to the Plantronics COM API:
plugin_name: "Plugin Name";
the_session: CoCOMSession.Create;
session_manager = new COMSessionManager.Create;
session_manager.Register(plugin_name, the_session);
//Hook to Session Manager Events
state_device_event_args := CoCOMStateDeviceEventArgs.Create;
call_event_args := CoCOMCallEventArgs.Create;
The final line of Delphi Code is the issue. The other three "Create" calls go off without a hitch. The line "call_event_args := CoCOMCallEventArgs.Create;" throws the error "Class not registered", even through it is declared and implemented in the library file along with the other three.
Excerpts from the library file:
Class Declarations:
IID_ICOMStateDeviceEventArgs: TGUID = '{91542BEE-4931-4620-9E96-23AE4001E93F}';
CLASS_COMStateDeviceEventArgs: TGUID = '{335D08FD-8BB5-4EF5-964B-E8A8C010530F}';
IID_ICOMCallEventArgs: TGUID = '{0280956C-C644-4CD8-B124-C8A99E5D505E}';
CLASS_COMCallEventArgs: TGUID = '{705129C3-2265-4F10-9768-0FF8A20234C0}';
Class creation functions:
//Works
class function CoCOMStateDeviceEventArgs.Create: ICOMStateDeviceEventArgs;
begin
Result := CreateComObject(CLASS_COMStateDeviceEventArgs) as ICOMStateDeviceEventArgs;
end;
// Doesn't Work
class function CoCOMCallEventArgs.Create: ICOMCallEventArgs;
begin
Result := CreateComObject(CLASS_COMCallEventArgs) as ICOMCallEventArgs;
end;
Every tutorial / forum answer about resolving the "Class Not Registered" error that I have found has not resolved the issue.
Does anyone have any advice or insight as to what I have been doing wrong?
Thank you.
The issue has been (potentially) resolved by the following -
I had mistakenly thought from the tutorial / first steps section that a "COMCallEventArgs" object needed to be created before it could be used.
Upon further review, the COMCallEventArgs object gets created when necessary at a later point.
More testing needs to be done, but I believe this issue is resolved.
I am a new user to JavaScript and the meteor framework trying to understand the basic concepts. First of all I want to add a single document to a collection without duplicate entries.
this.addRole = function(roleName){
console.log(MongoRoles.find({name: roleName}).count());
if(!MongoRoles.find({name: roleName}).count())
MongoRoles.insert({name: roleName});
}
This code is called on the server as well as on the client. The log message on the client tells me there are no entries in the collection. Even if I refresh the page several times.
On the server duplicate entries get entered into the collection. I don't know why. Probably I did not understand the key concept. Could someone point it out to me, please?
Edit-1:
No, autopublish and insecure are not installed anymore. But I already published the MongoRoles collection (server side) and subscribed to it (client side). Furthermore I created a allow rule for inserts (client side).
Edit-2:
Thanks a lot for showing me the meteor method way but I want to get the point doing it without server side only methods involved. Let us say for academic purposes. ;-)
Just wrote a small example:
Client:
Posts = new Mongo.Collection("posts");
Posts.insert({title: "title-1"});
console.log(Posts.find().count());
Server:
Posts = new Mongo.Collection("posts");
Meteor.publish(null, function () {
return Posts.find()
})
Posts.allow({
insert: function(){return true}
})
If I check the server database via 'meteor mongo' it tells me every insert of my client code is saved there.
The log on the client tells me '1 count' every time I refresh the page. But I expected both the same. What am I doing wrong?
Edit-3:
I am back on my original role example (sorry for that). Just thought I got the point but I am still clueless. If I check the variable 'roleCount', 0 is responded all the time. How can I load the correct value into my variable? What is the best way to check if a document exists before the insertion into a collection? Guess the .find() is asynchronous as well? If so, how can I do it synchronous? If I got it right I have to wait for the value (synchronous) because I really relay on it.
Shared environment (client and server):
Roles = new Mongo.Collection("jaqua_roles");
Roles.allow({
insert: function(){return true}
})
var Role = function(){
this.addRole = function(roleName){
var roleCount = Roles.find({name: roleName}).count();
console.log(roleCount);
if(roleCount === 0){
Roles.insert({name: roleName}, function(error, result){
try{
console.log("Success: " + result);
var roleCount = Roles.find({name: roleName}).count();
console.log(roleCount);
} catch(error){
}
});
}
};
this.deleteRole = function(){
};
}
role = new Role();
role.addRole('test-role');
Server only:
Meteor.publish(null, function () {
return Roles.find()
})
Meteor's insert/update/remove methods (client-side) are not a great idea to use. Too many potential security pitfalls, and it takes a lot of thought and time to really patch up any holes. Further reading here.
I'm also wondering where you're calling addRole from. Assuming it's being triggered from client-side only, I would do this:
Client-side Code:
this.addRole = function(roleName){
var roleCount = MongoRoles.find({name: roleName}).count();
console.log(roleCount);
if (roleCount === 0) {
Meteor.call('insertRole', roleName, function (error, result) {
if (error) {
// check error.error and error.reason (if I'm remembering right)
} else {
// Success!
}
});
}
}
How I've modified this code and why:
I made a roleCount variable so that you can avoid calling MongoRoles.find() twice like that, which is inefficient and consumes unneeded resources (CPU, disk I/O, etc). Store it once, then reference the variable instead, much better.
When checking numbers, try to avoid doing things like if (!count). Using if (count === 0) is clearer, and shows that you're referencing a number. Statements like if (!xyz) would make one think this is a boolean (true/false) value.
Always use === in JavaScript, unless you want to intentionally do a loose equality operation. Read more on this.
Always use open/closed curly braces for if and other blocks, even if it contains just a single line of code. This is just good practice so that if you decide to add another line later, you don't have to then wrap it in braces. Just a good practice thing.
Changed your database insert into a Meteor method (see below).
Side note: I've used JavaScript (ES5), but since you're new to JavaScript, I think you should jump right into ES6. ES is short for ECMAScript (which is what JS is based on). ES6 (or ECMAScript 2015) is the most recent stable version which includes all kinds of new awesomeness that JavaScript didn't previously have.
Server-side Code:
Meteor.method('insertRole', function (roleName) {
check(roleName, String);
try {
// Any security checks, such as logged-in user, validating roleName, etc
MongoRoles.insert({name: roleName});
} catch (error) {
// error handling. just throw an error from here and handle it on client
if (badThing) {
throw new Meteor.Error('bad-thing', 'A bad thing happened.');
}
}
});
Hope this helps. This is all off the top of my head with no testing at all. But it should give you a better idea of an improved structure when it comes to database operations.
Addressing your edits
Your code looks good, except a couple issues:
You're defining Posts twice, don't do that. Make a file, for example, /lib/collections/posts.js and put the declaration and instantiation of Mongo.Collection in there. Then it will be executed on both client and server.
Your console.log would probably return an error, or zero, because Posts.insert is asynchronous on the client side. Try the below instead:
.
Posts.insert({title: "title-1"}, function (error, result) {
console.log(Posts.find().count());
});
I am learning PhoneGap for an app project and need to use the database for certain aspects, I am trying out the Nova Data framework,
https://cordova.codeplex.com/wikipage?title=How%20to%20use%20nova.data
I am trying to use my code to put together a test entity, but I am getting a db error telling me there is a missing table. The documentation does not specify that the database should be created beforehand, but I am starting to think that may be the case. Has anyone out there used the Nova framework in a project? I just need a little guidance.
Here is my code I am using to kick off the DB Context:
var DataContext = function () {
nova.data.DbContext.call(this, "HealthDb", "1.0", "Health DB", 1000000);
this.Temperatures = new nova.data.Repository(this, Temperature, "Temperatures");
};
DataContext.prototype = new nova.data.DbContext();
DataContext.constructor = DataContext;
And my entity (Temperature) :
var Temperature = function () {
nova.data.Entity.call(this);
this.Value = 101;
};
Temperature.prototype = new nova.data.Entity();
Temperature.constructor = Temperature;
It is creating an empty database with the proper name, just no tables! I am grateful for any assistance!
Thanks for using our library. I have made the html5 sqlite as a standalone library. Please get it from github.
A live demo link is also available there. And the documentation is more complete. The lib itself has also been updated and a few bugs fixed.
Thanks,
Leo
Turns out I was trying to start up the dbcontext before I defined my entity classes....
Changed the order of my js files and it works.
When we are sending the airbrake error to the airbrake server, by default it includes the controller name and action name.
But the question is that I want to add some extra parameters like username, email of the current user. If anyone has any idea please suggest how to do that?
In my layout application.html:
- if ['development'].include?(Rails.env)
= airbrake_javascript_notifier
= render :partial => 'layouts/airbrake_notifier'
and in the partial I have written:
Airbrake.errorDefaults['name'] = "#{current_user.name}";<br/>
Airbrake.errorDefaults['email'] = "#{current_user.email}";<br/>
Airbrake.errorDefaults['phone'] = "#{current_user.phone}";<br/>
Airbrake.errorDefaults['title'] = "#{current_user.title;<br/>
Not a great solution, but the Airbrake Knowledge Base recommends essentially patching the airbrake gem source of the lib/airbrake/notice.rb file.
def initialize(args)
...
self.parameters = args[:parameters] ||
action_dispatch_params ||
rack_env(:params) ||
{'username' => current_user.name}
It would certainly be better to have this be configurable without patching source.
What I've done instead is simply add a few pieces of data to the session (current_user.name mainly), since session data is sent with the request. I wouldn't do this for more than a few little pieces of data.
We've just added getting current users into the Airbrake Gem.
https://github.com/airbrake/airbrake/wiki/Sending-current-user-information
You'll soon be able to sort by current user in an upcoming redesign of the UI.
I am using EF4 Self Tracking Entities (VS2010 Beta 2 CTP 2 plus new T4 generator). But when I try to update entity information it does not update to database as expected.
I setup 2 service calls. one for GetResource(int id) which return a resource object. the second call is SaveResource(Resource res); here is the code.
public Resource GetResource(int id)
{
using (var dc = new MyEntities())
{
return dc.Resources.Where(d => d.ResourceId == id).SingleOrDefault();
}
}
public void SaveResource(Resource res)
{
using (var dc = new MyEntities())
{
dc.Resources.ApplyChanges(res);
dc.SaveChanges();
// Nothing save to database.
}
}
//Windows Console Client Calls
var res = service.GetResource(1);
res.Description = "New Change"; // Not updating...
service.SaveResource(res);
// does not change anything.
It seems to me that ChangeTracker.State is always show as "Unchanged".
anything wrong in this code?
This is probably a long shot... but:
I assume your Service is actually in another Tier? If you are testing in the same tier you will have problems.
Self Tracking Entities (STEs) don't record changes until when they are connected to an ObjectContext, the idea is that if they are connected to a ObjectContext it can record changes for them and there is no point doing the same work twice.
STEs start tracking once they are deserialized on the client using WCF, i.e. once they are materialized to a tier without an ObjectContext.
If you look through the generated code you should be able to see how to turn tracking on manually too.
Hope this helps
Alex
You have to share assembly with STEs between client and service - that is the main point. Then when adding service reference make sure that "Reuse types in referenced assemblies" is checked.
The reason for this is that STEs contain logic which cannot be transfered by "Add service reference", so you have to share these types to have tracing logic on client as well.
After reading the following tip from Daniel Simmons, the STE starts tracking. Here is the link for the full article. http://msdn.microsoft.com/en-us/magazine/ee335715.aspx
Make certain to reuse the Self-Tracking Entity template’s generated entity code on your client. If you use proxy code generated by Add Service Reference in Visual Studio or some other tool, things look right for the most part, but you will discover that the entities don’t actually keep track of their changes on the client.
so in the client make sure you don't use add service reference to get the proxy instead access service through following code.
var svc = new ChannelFactory<IMyService>("BasicHttpBinding_IMyService").CreateChannel();
var res = svc.GetResource(1);
If you are using STEs without WCF you may have to call StartTracking() manually.
I had the same exact problem and found the solution.
It appears that for the self-tracking entities to automatically start tracking, you need to reference your STE project before adding the service reference.
This way Visual Studio generates some .datasource files which does the final trick.
I found the solution here:
http://blogs.u2u.be/diederik/post/2010/05/18/Self-Tracking-Entities-with-Validation-and-Tracking-State-Change-Notification.aspx
As for starting the tracking manually, it seems that you do not have these methods on the client-side.
Hope it helps...