angular js unknown provider

Question

I m trying to  customize  the mongolab example to fit my own REST API  Now I m running into this error and I am not sure what I am doing wrong   Error  Unknown provider  ProductProvider  lt - Product     at Error  unknown source      at http   localhost 3000 js vendor angular min js 28 395     at Object c  as get   http   localhost 3000 js vendor angular min js 26 180      at http   localhost 3000 js vendor angular min js 28 476     at c  http   localhost 3000 js vendor angular min js 26 180      at d  http   localhost 3000 js vendor angular min js 26 314    This is my controller   function ProductListCtrl  scope  Product       scope products   Product query        and this is the module   angular module  productServices     ngResource         factory  Product      resource   function  resource         var Product    resource   api products  id                   update    method   PUT                     return Product

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After handling with this error too  I can support this list of answers with my own case   It s at the same time simple and dumb  maybe not dumb for beginners like me  but yes for experts   the script reference to angular min js must be the first one in your list of scripts in the html page   This works    lt script src  Scripts angular min js  gt  lt  script gt   lt script src  MyScripts MyCartController js  gt  lt  script gt   lt script src  MyScripts MyShoppingModule js  gt  lt  script gt    This not    lt script src  MyScripts MyCartController js  gt  lt  script gt   lt script src  MyScripts MyShoppingModule js  gt  lt  script gt   lt script src  Scripts angular min js  gt  lt  script gt    Notice about the angular min js   Hope it helps anyone

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Since this question is top google result  I will add another possible thing to the list      If the module that you re using has a failure on the dependency injection wrapper  it will provide this same result    For example copy  amp  paste modules from the internet may rely on underscore js and attempt to inject with     in the di wrapper    If underscore doesn t exist in your project dependency providers  when your controller attempts to reference your module s factory  it will get  unknown provider  for your factory in the browser s console log

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For me the problem was lazy loading  I loaded my controller and service late  so they were not available at page load  and Angular initialization   I did this with an ui-if tag  but that s irrelevant  The solution was to load the service with the page load already

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Your code looks good  in fact it works  apart from the calls themselves  when copied  amp  pasted into a sample jsFiddle  http   jsfiddle net VGaWD   Hard to say what is going on without seeing a more complete example but I hope that the above jsFiddle will be helpful  What I m suspecting is that you are not initializing your app with the  productServices  module  It would give the same error  we can see this in another jsFiddle  http   jsfiddle net a69nX 1   If you are planning to work with AngularJS and MongoLab I would suggest using an existing adapter for the  resource and MongoLab  https   github com pkozlowski-opensource angularjs-mongolab It eases much of the pain working with MongoLab  you can see it in action here  http   jsfiddle net pkozlowski opensource DP4Rh  Disclaimer  I m maintaining this adapter  written based on AngularJS examples  so I m obviously biased here

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Make sure your main app js includes the services on which it depends  For example       App Module    angular module  myApp     productServices

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pkozlowski s answer is correct  but just in case this happens to someone else  I had the same error after creating the same module twice by mistake  the second definition was overriding the provider of the first    I created the module by doing  angular module  MyService       factory         then a bit further down in the same file   angular module  MyService       value  version   0 1      The correct way of doing this is    angular module  MyService       factory      value  version   0 1

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I was forgetting to inject the file that held my services altogether  Remember to do this when initializing your app module   angular module  myApp     myApp services

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This took me way too long to track down   Make sure you minisafe your controller within your directive    directive  my directive     injected item   function  injected item      return        controller    DO IT HERE TOO   function DO IT HERE TOO                   Hope that helps

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At the end of the JS file to close the factory function I had       instead of

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The problem for me was that there were some new javascript files I created that referenced the service yet Chrome saw only the older version  A CTRL   F5 fixed it for me

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I faced similar issue today and issues was really very small   app directive  removeFriend   function  scope    return       restrict   E       templateUrl   removeFriend html       controller  function  scope             scope removing   false           scope startRemove   function                  scope removing   true                     scope cancelRemove   function                  scope removing   false                     scope removeFriend   function friend                var idx    scope user friends indexOf friend              if  idx  gt  -1                     scope user friends splice idx  1                                         If you observe the above block  in the first line you will observe I injected  scope by mistake which is incorrect  I removed that unwanted dependency to solve the issue    app directive  removeFriend   function     return       restrict   E       templateUrl   removeFriend html       controller  function  scope             scope removing   false           scope startRemove   function                  scope removing   true                     scope cancelRemove   function                  scope removing   false                     scope removeFriend   function friend                var idx    scope user friends indexOf friend              if  idx  gt  -1                     scope user friends splice idx  1

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I got that error because I was passing an incorrect parameter to the factory definition  I had   myModule factory  myService   function  scope   http       It worked when I removed the  scope and changed the factory definition to    myModule factory  myService   function   http       In case you need to inject  scope  use   myModule factory  myService   function  rootScope   http

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Here s another possible scenario where you can see this error   If you use Sublime Text 2 and the angular plugin  it will generate stubs like this  angular module  utils        factory  utilFactory           function             return                          notice the empty     as the first element of the array after the  utilFactory  string  If you don t have any dependencies  remove that so it s like this   angular module  utils        factory  utilFactory         function             return

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Yet another possibility   I had unknown Provider  lt -   lt - nameOfMyService  The error was caused by the following syntax   module factory      function                Angular was looking for the    dependency

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None of the answers above worked for me  maybe I was doing completely wrong  but as a beginner that s what we do   I was initializing the controller in a div in order to have a list     lt div ng-controller  CategoryController  ng-init  initialize    gt    And then using  routeProvider to map a URL to the same controller  As soon as I removed the ng-init the controller worked with the route

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My scenario may be a little obscure but it can cause the same error and someone may experience it  so   When using the  controller service to instantiate a new controller  which was expecting   scope  as it s first injected argument  I was passing the new controller s local scope into the  controller   function s second parameter  This lead to Angular trying to invoke a  scope service which doesn t exist  though  for a while  I actually thought that I d some how deleted the   scope  service from Angular s cache   The solution is to wrap the local scope in a locals object      Bad   controller  myController   newScope       Good   controller  myController    scope  newScope

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In my case  I used an anonymous function as a wrapper for the angular module  like this    function      var app   angular module  myModule                    After closing the parenthesis  I forgot to call the anonymous function by opening and closing the parentheses again as above

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I just had a similar problem  The error said the same the in the question  tried to solve it with the answer of pkozlowski opensource and Ben G  which both are correct and good answers    My problem was indeed different with the same error   in my HTML-Code I had the initialisation like this      lt html ng-app gt    A bit further down I tried to do something like this    lt div id  cartView  ng-app  myApp  ng-controller  CartCtrl  gt    I got rid of the first one    then it worked    obviously you can t initialise ng-app twice or more times  fair enough   I totaly forgot about the first  ng-app  and got totaly frustrated  Maybe this is gonna help someone oneday

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I had same problem  I fixed that using    body   attr  ng-app    MyApp   instead of  lt body ng-app  MyApp  gt  to boostrap    Because I did  angular element document  ready function                  angular bootstrap document   App Config Settings AppName         for architecture requirements

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I got an  unknown provider  error related to angular-mocks  ngMockE2E  when compiling my project with Grunt  The problem was that angular-mocks cannot be minified so I had to remove it from the list of minified files

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Since this is the top result for  angularjs unknown provider  on Google right now  here s another gotcha  When doing unit testing with Jasmine  make sure you have this statement in your beforeEach   function   module  moduleName       Otherwise you ll get this same error in your tests

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I had this error after I created a new factory and used it within a component but I did not check the specs of that components     so if the failure in your  specs  test files      you need to add  beforeEach module  YouNewServiceModule

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In my case  I ve defined a new provider  say  xyz  angular module  test    provider  xyz   function                     When you were to config the above provider  you ve to inject it with Provider string appended --   xyz becomes xyzProvider   Ex   angular module  App     test     config function  xyzProvider            do something with xyzProvider           If you inject the above provider without the  Provider  string  you ll get the similar error in OP

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To add my own experience in here  I was trying to inject a service into one of my module config functions  This paragraph from the docs which I eventually found explains why that doesn t work      During application bootstrap  before Angular goes off creating all services  it configures and instantiates all providers  We call this the configuration phase of the application life-cycle  During this phase  services aren t accessible because they haven t been created yet    Meaning you can inject providers into module config      functions  but you can t inject services  for that you need to wait until module run       or expose a provider you can inject to module config

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Yet another case where this error will occur  if you re service is defined in a separate javascript file  make sure you reference it  Yes  I know  rookie mistake

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My problem was with Yeoman  using  capitalized    yo angular factory Test   Made files  uncapitalized     app scripts services test js   but the index html file included  capitalized     lt script src  scripts services Test js  gt  lt  script gt    Hope this helps someone

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My case was dodgy typing  myApp factory  Notify  funtion      function has a  c

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Another  gotcha   I was getting this error injecting  timeout  and it took a few minutes to realize I had whitespace in the array values  This will not work   angular module  myapp        controller  myCtrl      scope     timeout         function   scope   timeout           controller logic               Posting just in case some else has a silly error like this

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For me  this error was caused by running the minified version of my angular app  Angular docs suggest a way to work around this  Here is the relevant quote describing the issue  and you can find the suggested solution in the docs themselves here      A Note on Minification   Since Angular infers the controller s dependencies from the names of arguments to the controller s constructor function  if you were to minify the JavaScript code for PhoneListCtrl controller  all of its function arguments would be minified as well  and the dependency injector would not be able to identify services correctly

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In my Ruby on Rails app  I had done the following   rake assets precompile   This was done in the  development  environment  which had minified Angular js and included it in the  public assets application js file   Removing the  public assets   files solved the problem for me

[angularjs] angular js unknown provider

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