如何访问angular.js行动成功回调JSON返回值 [英] How to access json return values in angular.js action success callback
问题描述
我试图使利用angular.js资源,增加了成功和错误回调后调用。
wbsModule.factory('的GridData',函数($资源){
//定义资源类
VAR根= {{root.pk}};
VAR CSRF ='{{csrf_token}}';
返回$资源('{%URL getJSON4SlickGrid root.pk%}:wpID',{wpID:@ ID},{
得到:{方法:GET,则params:{根:根},IsArray的:真正},
更新:{方法:POST,标题:{'X-CSRFToken':CSRF}},
});
});
我打电话这样的更新操作:
args.item $更新([],successUpdateCallback,errorUpdateCallback)。
在这里我跟着这个部分文档的:
非获得实例动作:例如$行动([参数],[成功],[错误])
服务器返回JSON这样如果发生错误:
jsonReturn = [{错误:哎呀呀..有问题发生,我们无法保存您的最后一次更改突出显示的行中:}]
jsonReturn.append({'wp_id':wp_id})
尝试:
关键在wpForm.errors.iteritems)值(:
jsonReturn.append({form_errors:< BR />中+ STR(值)})
除例外,E:
打印E
返回的Htt presponse(json.dumps(jsonReturn,缩进= 4),MIME类型=应用/ JSON,状态= 400)
有关错误回调我能获得这样的错误信息:
函数errorUpdateCallback(结果){
的console.log(result.data);
错误= result.data [0] .error;
wp_id = result.data [1] .wp_id;
form_errors = result.data [2] .form_errors;
}
};
但是,当我试图为成功的功能我得到这个错误,这是进入前successUpdateCallback抛出做相同的:
未定义不是一个函数(评估'a.push(U(B [C]))')
http://ajax.googleapis.com/ajax/libs/angularjs/1.0.2/angular.min.js
我在哪里创建JSON一样在服务器错误案例:
jsonReturn = [{消息:全成更新}]
返回的Htt presponse(json.dumps(jsonReturn,缩进= 4),MIME类型=应用/ JSON,状态= 200)
和解析成功回调相同错误回调:
函数successUpdateCallback(结果){
的console.log(在SUC更新。);
的console.log(结果);
消息= result.data [0] .message;
};
而当我返回一个空的JSON对象,我没有得到这个错误,并且successUpdateCallback输入,打印,在suc.update到控制台:
jsonReturn = []
返回的Htt presponse(json.dumps(jsonReturn,缩进= 4),MIME类型=应用/ JSON,状态= 200)
有关将来参考:
角期待一个成功的电话后,服务器与我们称之为$更新或$保存资源的JSON重新presentation响应。
我发现它这里。藏在一个评论:)
卡$保存()。
// POST:/用户/ 123 /卡/ 456 {ID:456,号码:1234,名称:'J。史密斯}
//服务器返回:{ID:456,号码:1234,名称:'J.史密斯'};
所以我返回从服务器资源的JSON重新presentation,它按预期工作。
I'm trying to make a post call using resources from angular.js and adding a success and error callback.
wbsModule.factory('gridData', function($resource) {
//define resource class
var root = {{ root.pk }};
var csrf = '{{ csrf_token }}';
return $resource('{% url getJSON4SlickGrid root.pk %}:wpID', {wpID:'@id'},{
get: {method:'GET', params:{root : root }, isArray:true},
update:{method:'POST', headers: {'X-CSRFToken' : csrf }},
});
});
I'm calling the update action like this:
args.item.$update([], successUpdateCallback, errorUpdateCallback);
where I followed this part of the docs:
non-GET instance actions: instance.$action([parameters], [success], [error])
The server returns json like this if an error occurs:
jsonReturn = [{'error' : "Oops.. a problem occured. We could not save your last change in the highlighted row: "}]
jsonReturn.append({'wp_id' : wp_id})
try:
for key, value in wpForm.errors.iteritems():
jsonReturn.append({"form_errors" : "<br/>" + str(value)})
except Exception, e:
print e
return HttpResponse(json.dumps(jsonReturn, indent=4), mimetype="application/json", status=400)
For the error callback I am able access the error messages like this:
function errorUpdateCallback(result){
console.log(result.data);
error = result.data[0].error;
wp_id = result.data[1].wp_id;
form_errors = result.data[2].form_errors;
}
};
But when I try to do the same for the success function I'm getting this error, which is thrown before entering the successUpdateCallback:
'undefined' is not a function (evaluation 'a.push(U(b[c]))')
http://ajax.googleapis.com/ajax/libs/angularjs/1.0.2/angular.min.js
Where I create the json the same as in the error case at the server:
jsonReturn = [{'message' : "Successfull update."}]
return HttpResponse(json.dumps(jsonReturn, indent=4), mimetype="application/json", status=200)
and parsing the success callback the same as the error callback:
function successUpdateCallback(result){
console.log("in suc. update");
console.log(result);
message = result.data[0].message;
};
Whereas when I return an empty json object I do not get this error and the successUpdateCallback is entered, printing "in suc.update" to the console:
jsonReturn = []
return HttpResponse(json.dumps(jsonReturn, indent=4), mimetype="application/json", status=200)
For future reference:
Angular is expecting for a successful post call that the server responds with the json representation of the resource for which we called $update or $save.
I found it here. Hidden in a comment :)
card.$save();
// POST: /user/123/card/456 {id:456, number:'1234', name:'J. Smith'}
// server returns: {id:456, number:'1234', name: 'J. Smith'};
Therefore I'm returning the json representation of the resource from the server and it works as expected.
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