I have an angular project. I am making an html/angular form - getting the data from a stored procedure via $http get in a service in angular. Now I want to databind some of the drop down lists in my filter that's in this html form. I have the data in a view which I made models for and added to the entity framework. How should I make calls to this breeze in angular? Code example please? in service or in controller?
------here's what i've tried--------------
what am I doing wrong here? (may be a few things...i'm new to angular. Then I just want to be able to somehow call this function populatestyleddl in my ng-model or something....
.factory('sellingService', ['$filter', '$http', function ($filter, $http) {
function PopulateStyleDDL() {
return breeze.EntityQuery.fromEntityNavigation('v_Style')
.using(context.manager).execute();
};
//check if above function is legal
function SalesStatus(filter) {
console.log(breeze);
return $http({
method: 'GET',
url: '/Services/SalesStatus',
params: { filter.itemStyle }
}).then(function (result)
{ return result.data; })
}
return {
SalesStatus: SalesStatus
};
}]);
--------------------------------here's what i have now.....
ok, here is what i've got now. this is happening in a js file where all my breeze calls are. Can you confirm if my syntax here is right and how my function syntaxically should look in my factory (and also how my syntax should look in my controller...)
function GetStyles() { return breeze.EntityQuery .from("v_Style") .using(manager) .execute(); }
#LisaSolomon, regarding your syntax:
function GetStyles() {
return breeze.EntityQuery
.from("v_Style")
.using(manager)
.execute();
}
Looks good with the information I have. If it's not working I'd make sure:
The controller has a properly-defined v_Style action, and
The manager is defined and has the correct service name
So, assuming that is correct, you will need to add it to your returned object so that it is available in your controller:
return {
SalesStatus: SalesStatus,
GetStyles: GetStyles
};
Then to use it in your controller, you will need to reference the .then() of the promise
$scope.styles = '';
sellingService.GetStyles().then(function(data) {
$scope.styles = data.results;
}).catch(function(err) {
// error processing
});
Any error messages you're getting would be helpful. If there's any chance you could show controller and view code so we could build a fiddle, that would be great, too.
Related
I've been facing a trouble while working with Factory/Service. I've created an AjaxRequests factory for all of my AJAX calls. My factory code is
.factory('AjaxRequests', ['$http', function ($http) {
return {
getCampaignsData: function () {
var campaigns
return $http.get(url).then(function (response) {
campaigns = response.data;
return campaigns;
});
}
}
}])
I've created another service in which I am injecting this factory. My service code
.service('CampaignsService', ['$rootScope', 'AjaxRequests', function ($rootScope, AjaxRequests) {
this.init = function () {
this.camps;
AjaxRequests.getCampaignsData().then(function (response) {
this.camps = response.campaigns;
console.log(this.camps); // It is showing data
})
console.log(this.camps); // But it is not working :(
};
this.init();
}])
And in my controller
.controller('AdvanceSettingsController', ['$scope', 'CampaignsService', function ($scope, CampaignsService) {
$scope.CampaignsService = CampaignsService;
}
])
I've read this article to learn promises but it is not working here. I can directly achieve it in controller and it's been working fine. But it consider as a bad coding standard to make controller thick. But when I use service and factory I stuck. My question is why I am not getting ajax data to use in my whole service ? I need to use CampaignsService.camps in my view template as well as in my whole rest script but every time I get undefined. What is happening here? I've asked the same question before but couldn't get any success. Some one please help me to understand about promises and why I am getting this type of error if I'm working same ? This type of question has already been asked before but it was working in controller. May be I am stuck because I'm using it in a service.
A big thanks in advance.
This is not a bug or some tricky functionality. Just like in any other AJAX implementation, you can only access the response data in AngularJS's $http success method. That's because of the asynchronous nature of Asynchronous JavaScript And XML.
And what you have is working.
.controller('AdvanceSettingsController', ['$scope', 'AjaxRequests', function ($scope, AjaxRequests) {
$scope.camps = [];
AjaxRequests.getCampaignsData().then(function(data) {
$scope.camps = data;
});
}
])
And then bind camps:
<div ng-repeat="camp in camps>{{camp.name}}</div>
What's bad in your implementation is that instead of grouping related stuff in services you are writing a big AjaxRequests service for everything. You should have a CampaignsService that has a getData method and inject that in your controller.
Why is this working? Because $http does a $scope.$apply for you, which triggers a digest cycle after the data is loaded (then) and updates the HTML. So before the then callback that ng-repeat is run with [] and after it it's again run but with data from the response because you are setting $scope.camps = data;.
The reason <div ng-repeat="camp in CampaignsService.camps>{{camp.name}}</div> does not work is because of function variable scoping.
The this reference inside of your then callback is not the same as the this reference outside of it.
This will work and uses the common var self = this trick:
var self = this;
this.camps = [];
this.init = function () {
AjaxRequests.getCampaignsData().then(function (response) {
// here "this" is not the one from outside.
// "self" on the other hand is!
self.camps = response.campaigns;
});
};
Recently it has become possible to use angularjs within google apps script via the iframe sandbox mode.
My problem comes when trying to communicate with the server (gapps spreadsheet) and receiving asynchronous data in return.
The implementation for receiving data from the server is to use a function with a callback function like so:
google.script.run.withSuccessHandler(dataGatheringFunction).getServerData();
getServerData() would be a function that resides server-side that would return some data, usually from the accompanying spreadsheet. My question is how to use the callback function within the parameters of AngularJS. A typical $http function could be placed in a provider, and the scope value could be populated after then.() returns. I could also invoke $q. But how would I deal with the necessity of google's callback?
Here's a simplified version of what I'm messing with so far:
app.factory("myFactory", function($q){
function ssData(){
var TssData = function(z){
return z;
}
google.script.run.withSuccessHandler(TssData).getServerData();
var deferred = $q.defer();
var d = deferred.resolve(TssData)
console.log("DP: " + deferred.promise);
return deferred.promise;
}
return ssData();
})
Then in the controller resolve the server call similar to this:
myFactory.then(set some variables here with the return data)
My question is simply - How do I deal with that callback function in the provider?
The script throws no errors, but does not return the data from the server. I could use the old $timeout trick to retrieve the data, but there should be a better way.
You only need to $apply the output from the server function:
google.script.run.withSuccessHandler(function(data) {
$scope.$apply(function () {
$scope.data = data;
});
}).withFailureHandler(errorHandler).serverFunction();
Maybe the most elegant solution that makes sure the google.script.run callbacks are registered automatically in the AngularJS digest cycle would be to use the $q constructor to promisify the google callbacks. So, using your example above:
app.factory('myFactory', ['$q', function ($q){
return {ssData: ssData};
function ssData(){
var TssData = function(z){
return z;
};
var NoData = function(error) {
// Error Handling Here
};
return $q(function(resolve, reject) {
google.script.run
.withSuccessHandler(resolve)
.withFailureHandler(reject)
.getServerData();
}).then(TssData).catch(NoData);
}
}]);
Then in your controller you can call myFactory.ssData()
Since I don't know exactly what TssData is doing I included it here but note that this simply returns another promise in this context which you will still have to handle in your controller:
myFactory.ssData().then(function(response) {
// Set data to the scope or whatever you want
});
Alternately, you could expose TssData by adding it to the factory's functions if it is doing some kind of data transformation. If it is truly just returning the response, you could refactor the code and omit TssData and NoData and handle the promise entirely in the controller:
app.factory('myFactory', ['$q', function ($q){
return {ssData: ssData};
function ssData(){
return $q(function(resolve, reject) {
google.script.run
.withSuccessHandler(resolve)
.withFailureHandler(reject)
.getServerData();
});
}
}]);
app.controller('myController', ['myFactory', function(myFactory) {
var vm = this;
myFactory.ssData()
.then(function(response) {
vm.myData = response;
}).catch(function(error) {
// Handle Any Errors
});
}]);
An excellent article about promises (in Angular and otherwise) is here: http://pouchdb.com/2015/05/18/we-have-a-problem-with-promises.html
This guy seems to be pulling data from a GSheet into angular quite happily without having to do anything fancy.
function gotData(res) {
$scope.validUser = res.validUser;
var data = angular.copy(res.data), obj, i=0;
Object.keys(data).forEach(function(sh) {
obj = {title: sh, checked: {}, showFilters: false, search: {}, sort: {index: 0, reverse: false}, currentPage: 0, checkedAll: true, showBtns: true, searchAll: ''};
obj.heading = data[sh].shift();
obj.list = data[sh];
obj.heading.forEach(function(s,i) {
obj.checked[i] = true;
});
$scope.sheets.push(obj);
});
$scope.sheets.sort(function(a,b) {
return a.title > b.title ? 1 : -1;
});
$scope.gotData = true;
$scope.$apply();
}
google.script.run.withSuccessHandler(gotData).withFailureHandler($scope.gotError).getData();
My solution was to get rid of the $q, promise scenario all together. I used $rootScope.$broadcast to update scope variables from the server.
Link to spreadsheet with script.
I have a factory called "Server" which contains my methods for interaction with the server (get/put/post/delete..). I managed to login and get all data successfully when I had all my code in my controller. Now that I want to separate this code and restructure it a little bit I ran into problems. I can still login and I also get data - but data is just printed; I'm not sure how to access the data in controller? I saw some ".then" instead of ".success" used here and there across the web, but I don't know how exactly.
This is my factory: (included in services.js)
app.factory('Server', ['$http', function($http) {
return {
// this works as it should, login works correctly
login: function(email,pass) {
return $http.get('mywebapiurl/server.php?email='+email+'&password='+pass').success(function(data) {
console.log("\nLOGIN RESPONSE: "+JSON.stringify(data));
if(data.Status !== "OK")
// login fail
console.log("Login FAIL...");
else
// success
console.log("Login OK...");
});
},
// intentional blank data parameter below (server configured this way for testing purposes)
getAllData: function() {
return $http.get('mywebapiurl/server.php?data=').success(function(data) {
console.log("\nDATA FROM SERVER: \n"+data); // here correct data in JSON string format are printed
});
},
};
}]);
This is my controller:
app.controller("MainController", ['$scope', 'Server', function($scope, Server){
Server.login(); // this logins correctly
$scope.data = Server.getAllData(); // here I want to get data returned by the server, now I get http object with all the methods etc etc.
…. continues …
How do I get data that was retrieved with $http within a factory to be accessible in controller? I only have one controller.
Thanks for any help, I'm sure there must be an easy way of doing this. Or am I perhaps taking a wrong way working this out?
EDIT: I also need to be able to call factory functions from views with ng-click for instance. Now I can do this like this:
// this is a method in controller
$scope.updateContacts = function(){
$http.get('mywebapiURL/server.php?mycontacts=').success(function(data) {
$scope.contacts = data;
});
};
and make a call in a view with ng-click="updateContacts()". See how $scope.contacts gets new data in the above function. How am I supposed to do this with .then method?(assigning returned data to variable)
My question asked straight-forwardly:
Lets say I need parts of controller code separated from it (so it doesn't get all messy), like some functions that are available throughout all $scope. What is the best way to accomplish this in AngularJS? Maybe it's not services as I thought …
The trick is to use a promise in your service to proxy the results.
The $http service returns a promise that you can resolve using then with a list or success and error to handle those conditions respectively.
This block of code shows handling the result of the call:
var deferred = $q.defer();
$http.get(productsEndpoint).success(function(result) {
deferred.resolve(result);
}).error(function(result) { deferred.reject(result); });
return deferred.promise;
The code uses the Angular $q service to create a promise. When the $http call is resolved then the promise is used to return information to your controller. The controller handles it like this:
app.controller("myController", ["$scope", "myService", function($scope, myService) {
$scope.data = { status: "Not Loaded." };
myService.getData().then(function(data) { $scope.data = data; });
}]);
(Another function can be passed to then if you want to explicitly handle the rejection).
That closes the loop: a service that uses a promise to return the data, and a controller that calls the service and chains the promise for the result. I have a full fiddle online here: http://jsfiddle.net/HhFwL/
You can change the end point, right now it just points to a generic OData end point to fetch some products data.
More on $http: http://docs.angularjs.org/api/ng.%24http
More on $q: http://docs.angularjs.org/api/ng.%24q
$http.get retuns a HttpPromise Object
Server.getAllData().then(function(results){
$scope.data = results;
})
I am new to Angular, and am having an issue where my $http url placeholders are not being replaced by the actual data. What I want is for this:
"/json/:searchType/:userId"
To be replaced with this when I use my $http call:
"/json/user/123"
Instead, I get something like this, according to firebug's Net tab:
"/json/:searchType/:userId?userId=123&searchType=user"
I have tried to create a fiddle, but because I use different views and json data from a server, I'm not sure how to create something that works in the fiddle that still looks anything like what I am actually doing. I have looked at this answer, this answer, this answer, this answer, and this answer, to name a few. I'm having trouble finding a posting that isn't about $resource, or the # notation it uses to link url params to object params though.
To explain, I'm using a service to pass the searchType and accountId params between controllers and my factory, which actually performs the $http request.
Here is my controller:
.controller('UserDetailsCtrl', ["$scope", "Search", function ($scope, Search) {
$scope.result = Search.getUser();
}])
Here is my Factory:
.factory('Search', ["$http", "SearchCriteriaSvc", function($http, SearchCriteriaSvc) {
var baseUrl = "/json/:searchType/:accountId";
return {
getUser: function () {
return $http.get(baseUrl,
{params:
{
accountId: SearchCriteriaSvc.getAccountId(),
searchType: SearchCriteriaSvc.getSearchType()
}
})
.then(function(result) {
return result.data;
});
}
}
}])
Finally, my service:
.service('SearchCriteriaSvc', function() {
var searchType = "",
userId = "";
return {
getSearchType: function () {
return searchType;
},
setSearchType: function(value) {
searchType = value;
},
getUserId: function () {
return userId;
},
setUserId: function(value) {
userId= value;
}
};
})
I have tried not using the service to pass the params (just manually typing in strings) and I get the same result, so I don't think that my service is the issue, but then, I'm at a loss.
Any help would be great. Thanks!
$http doesn't work in that way. You will have to collate your parameters into a URL yourself.
You are probably thinking of $resource which allows you to predefine HTTP request URLs and their parametric components, or $route which also allows similar parametric URL functionality but within the context of your angular front end rather than back end.
Any params passed in the way you pass them will end up as query / GET style parameters.
http://docs.angularjs.org/api/ng.$http
params – {Object.<string|Object>} – Map of strings or objects which will be turned to ?key1=value1&key2=value2 after the url. If the value is not a string, it will be JSONified.
I have looked, and assume this is simple, but just couldn't figure out the API documentation for this.
Assume I have a controller that pulls data when first called (I'm leaving out a ton, of course):
myCtrl = function ($scope, Data) {
$scope.data = [];
data_promise = Data.getData(); //a $http service
data_promise.success(function (data) {
$scope.data = data;
});
}
That works great, and when the page loads I get $scope.data populated exactly as I need it. However, of course, the user may wish to update the data. Assume a simple service "Data.save()" called when a server clicks a "save" button on a form:
myApp.factory('Data', function ($http) {
save: function (data) {
$http({
method: 'POST',
url: 'someURL',
data: data,
}).success(function(){
//something here that might trigger the controller to refresh
});
};
});
What would I put in the success callback that might re-instantiate the controller so that it has the most up-to-date data from the server? Currently I am having to refresh the page to get the updated data. I am not worried right now about minimizing server calls by cashing results and changes. I just need to get this to work first.
Thanks!
You do not need to refresh. Simply change the updated data in the ControllerScope.
This should work.
myApp.factory('Data', function ($http) {
save: function (data, $scope) {
$http({
method: 'POST',
url: 'someURL',
data: data,
}).success(function(){
$scope.data = newData;
//something here that might trigger the controller to refresh
});
};
});
// in your controller
Data.save(data, $scope);
But: You shouldn't do this way. This looks messy. Use services or events which you watch to wait for the changes comming back from the service.
OK, although I am sure there is a better answer I have one for me. Essentially I am taking the important parts of the controller and placing them in the success callback. In order to keep it from looking messy, I have wrapped all the parts of the controller that need be updated in a named function.
myCtrl = function ($scope, Data, $q) {
// Binding the Data
var updateAll;
updateAll = function () {
$scope.data1 = [];
$scope.data2 = [];
$scope.data3 = [];
$scope.data4 = [];
service_promise1 = Data.getData1(); //a $http service
service_promise2 = Data.getData2();
service_promise3 = Data.getData3();
service_promise4 = Data.getData4();
$q.all([service_promise1,service_promise2,service_promise3,service_promise4])
.then(function([service1,service2,service3,service]){
$scope.data1 = service1 + service2 //I know this isn't valid Javascript
// just for illustration purposes
$scope.data2 = service2 - service1 + service 3
//etc...
});
};
updateAll();
//Form Section
$("#myForm').dialog({
buttons: {
Save: function () {
Data.save(data).success(function(){
updateAll();
});
}
}
});
}
Breaking this down, I have wrapped all the assignments to scope objects that rely on services into the updateAll function and invoke it on instantiation of the myCtrl. In the form that updates the data I call the updateAll() function upon success of the Data.save() function.
Not exactly brain surgery, I'll admit, but I had gotten confused with $scope.$apply() and thinking about just calling myCtrl(). That somehow seemed like the "Angular" way, but neither worked. I guess the controller function gets run only once on page refresh and there is no Angular way to call it again.