$resource transformResponse function is malfunctioning

Question

$resource transformResponse function is malfunctioning

Take a look at this simplified example using $resource (adapted from Angular's website):

angular.module('project', ['mongolab']);

function ListCtrl($scope, Project) {
  $scope.projects = Project.test();
}

angular.module('mongolab', ['ngResource']).
factory('Project', function ($resource) {
  var url, dfParams, actions;

  url = 'https://api.mongolab.com/api/1/databases' + '/angularjs/collections/projects/:id';
  dfParams = {
    apiKey: '4f847ad3e4b08a2eed5f3b54'
  };

  actions = {
    test: {
      method: 'GET',
      isArray: true,
      transformResponse: function (response) {
        // line is never getting called
        console.log('transforming');
        return response;
      }
  };

  var Project = $resource(url, dfParams, actions);
  return Project;
});

The issue at hand is that the line console.log('transforming') is not being executed. What could be causing this behavior? The rest of the code seems to be functioning correctly.

Check out the live fiddle here.

javascript angularjs

Answer 1

Answer №1

You can utilize this feature starting from AngularJs version 1.1.2 onwards. Versions prior to 1.1.1 do not support this functionality.

Answer 2

You can utilize this feature starting from AngularJs version 1.1.2 onwards. Versions prior to 1.1.1 do not support this functionality.

Answer 3

Answer №2

The transformation callback for responses is not directly accessible in the $resource service; it is nested within the underlying $http service.

Therefore, there are two options available:

Opt for using the "low-level" $http instead of utilizing the $resource abstraction,
Develop a custom wrapper around your resource that can alter the response to meet your specific requirements.

Answer 4

The transformation callback for responses is not directly accessible in the $resource service; it is nested within the underlying $http service.

Therefore, there are two options available:

Opt for using the "low-level" $http instead of utilizing the $resource abstraction,
Develop a custom wrapper around your resource that can alter the response to meet your specific requirements.

Answer 5

Answer №3

I am facing a similar problem with my AngularJS 1.2.26 application.
I have created an interceptor with a transformResponse at the $http level like:

return {
  'request': function (config) {
      config.defaults.transformResponse = function(data){
          //some work has been done
      };
      return config;
},

Interestingly, removing the above code fixed the issue I was having with transformResponse in $resource!
To resolve this issue, I redefined my transformResponse in $resource as follows:

return $resource(pathConfig.serverURL + ':demoId',
    {
        demoId: "@id"
    },
    {
        hello: {
            method: "GET",
            url: serverDomain + ":demoId",
            transformResponse: addTransformResponses(
                [
                    function (data, getHeaders) {
                        //performing hello's custom interceptors
                    }
                ])
        }
    });

The function addTransformResponses includes a common interceptor setup:

addTransformResponses: function (addTrans) {
    return [this.parseResponseJson, this.parseResponseArray]
        .concat(addTrans);
},

//parse JSON
parseResponseJson: function (data, getHeaders) {
    try {
        return angular.fromJson(data);
    } catch (e) {
        console && console.error("returned data is not valid JSON!");
        return data;
    }
},
parseResponseArray: function (data, getHeaders) {
    if (angular.isArray(data)) {
        return {"array": data};
    }
    return data;
}

With this approach, you can effectively configure both common and specific request interceptors! :)
If there are any better practices, feel free to share! Thank you!

Answer 6

I am facing a similar problem with my AngularJS 1.2.26 application.
I have created an interceptor with a transformResponse at the $http level like:

return {
  'request': function (config) {
      config.defaults.transformResponse = function(data){
          //some work has been done
      };
      return config;
},

Interestingly, removing the above code fixed the issue I was having with transformResponse in $resource!
To resolve this issue, I redefined my transformResponse in $resource as follows:

return $resource(pathConfig.serverURL + ':demoId',
    {
        demoId: "@id"
    },
    {
        hello: {
            method: "GET",
            url: serverDomain + ":demoId",
            transformResponse: addTransformResponses(
                [
                    function (data, getHeaders) {
                        //performing hello's custom interceptors
                    }
                ])
        }
    });

The function addTransformResponses includes a common interceptor setup:

addTransformResponses: function (addTrans) {
    return [this.parseResponseJson, this.parseResponseArray]
        .concat(addTrans);
},

//parse JSON
parseResponseJson: function (data, getHeaders) {
    try {
        return angular.fromJson(data);
    } catch (e) {
        console && console.error("returned data is not valid JSON!");
        return data;
    }
},
parseResponseArray: function (data, getHeaders) {
    if (angular.isArray(data)) {
        return {"array": data};
    }
    return data;
}

With this approach, you can effectively configure both common and specific request interceptors! :)
If there are any better practices, feel free to share! Thank you!

$resource transformResponse function is malfunctioning

Answer №1

Answer №2

Answer №3

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