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EFS Service Layer, our API, allows to access EFS key functionalities from outside EFS. Thus, applications relying on EFS data and functionalities can be created outside of EFS with different technologies. The services can be called from outside via HTTPS, using SOAP or REST specifications. Various data exchange formats can be used (e.g. JSON or XML).
A list of all available EFS Service-Layer services can be found on this page.

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A dedicated configuration menu allows viewing and configuring of the services, which are available on your EFS installation. The menu is in Options → Service-Layer. The Service-Layer  menu is only available if Questback’s Support-Team our support team has activated usage of services for your installation. To view and access the menu, you need either read rights for the ACL right webservice_conf or membership in the root team.

The following steps are necessary to use a specific service:

• Questback’s Support-Team Our support team has to add the service.

• The service must be activated. If necessary, the button Activate all services allows activation of all available services at once.

• The staff account used to access the service is allocated to a specific staff team. This staff team must have the necessary access rights to the service. Access rights to individual services can be assigned on the tab Access groups.

• Furthermore, many services include a check for object rights. To use sur- vey.questionnaire.createPage or survey.questionnaire.deletePage, for example, the staff team needs write rights for the target project.

• All calls are logged on the Access log tab. The entries can be searched by IP address, name of the admin account used, service name and date.

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• SOAP: Provides API access using the SOAP protocol.

  • To activate the handler, use the URL parameter "handler" with the value "soap".

  • The name of the invoked method is handed over in the URL parameter "method". The method name is structured as follows: MODULENAME_ACTORNAME_METHODNAME (separator: underscore, ”_”).

  • If the URL parameter "wsdl" is set in the request, the description mode will be triggered and a WSDL will be generated. Otherwise, the transaction mode will be used. Since the WSDL also specifies a Stylesheet, the file is also viewable in a browser.

• REST: Provides REST API access, see the full list of services for REST examples.

  • To activate the handler, just create the REST request, as specified in the documentation or RAML file, e.g. GET https://efs-installation.com/service/survey/surveys/?token=TOKEN.
    The content type of all requests containing a HTTP body must be application/json and therefore all request bodies must be JSON encoded.

  • To get the RAML description file, triggering the description mode, create a request to /service/ using the URL parameters "handler=rest&raml=1", e.g. GET https://efs-installation.com/service/?handler=rest&raml=1&token=TOKEN

• PHP-serialized: Here, the input and output parameters are transferred as serialized PHP arrays. This is the recommended approach for PHP clients.

  • To activate the handler, use the URL parameter "handler" with the value "php".

  • The name of the invoked method is handed over in the URL parameter "method". The method name is structured as follows: MODULENAME.ACTORNAME.METHODNAME (separator: periods).

  • If the request is an HTTP GET request, the description mode will be triggered. Otherwise, the transaction mode will be used.

• JSON: Data are transferred in JSON encoding. See the example below.

  • To activate the handler, use the URL parameter "handler" with the value "json".

  • The name of the invoked method is handed over in the URL parameter "method". The method name is structured as follows: MODULENAME.ACTORNAME.METHODNAME (separator: periods)

  • If the request is an HTTP GET request, the description mode will be triggered. Otherwise, the transaction mode will be used.

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Two authentication methods can be used:

• Tokens: (recommended) QuestBack Support Our support can provide tokens for you and your staff members. These tokens can be used for authentication when invoking a service (parameter name: "token").

• Account name and password for the EFS admin area: Uses basic authentication of the HTTP protocol. The passwords are the same as for the administration area of EFS. QuestBack recommends We recommend to use tokens.

Calling the Service Description

Calling Requesting the WSDL for SOAP access:
https://your-efs-installation.com/service/?handler=soap&wsdl=1Calling

the WSDLRequesting the RAML file for REST access:
https://your-efs-installation.com/service/?handler=rest&raml=1

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Important Parameters

These are the most important parameters:

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<?php
/* Example requires Zend Framework */
require_once('Zend/Loader/Autoloader.php');
function serviceLayerCall($method, $params=null)
{
    $autoloader = Zend_Loader_Autoloader::getInstance();
    $url="http://EFSINSTALLATIONURL/service/index.php?handler=json&token=TOKEN";
    $client = new Zend_Http_Client();
    $client->setUri($url);
    $client->setConfig(array('timeout' => 30));
    $client->setMethod(Zend_Http_Client::POST);
    /* not using TOKEN? Here is basic auth: */
    //$user = "USER";
    //$passwd = "PASSWORD";
    //$client->setAuth($user, $passwd);
    
    $client->setRawData(json_encode(array('method' => $method, 'jsonrpc' => '2.0', 'id' => 1, 'params' => $params)));
    $request = $client->request();
    //print "<pre>";
    //var_dump($request->getBody());
    $return = json_decode($request->getBody());
    $return=$return->result;
    return $return->return;
}

/* 1. Step - Get projects
 */
print "<h3>1. step - get projects</h3>";
$projects=serviceLayerCall("survey.surveys.getList");

foreach($projects as $project)
{
    print "- ".$project->title." (".$project->id.")<br>";
}


//2. Step - Get Structure for Pid 1112
, first a helper function:
function sub($pages, &$myquestions)
{
    foreach($pages as $page)
    {
        if(count($page->subPages) > 0)
            $this->sub($page->subPages, $myquestions);
        foreach($page->questions as $question)
        {
            $myquestions[]=$question;
        }
    }
    return $myquestions;
}

$relevantVars=array();
print "<hr><h3>2. step - get structure for Pid 1112</h3>";
$project=serviceLayerCall("survey.surveys.getQuestionnaireStructure", array("surveyId" => 1112));
$questions=sub($project, $myquestions);
foreach($questions as $question)
{
    if($question->questiontext) {
        print $question->questiontext . "<br>";
        foreach ($question->variables as $variable) {
            if ($variable->type == "char" || $variable->type == "text") {
                print "Text-Var: ".$variable->varname . "<br>";
                //add to $relevantVars for export
                $relevantVars[] = $variable->varname;
            }
        }
    }
}

/* 3 - Relevant vars for export */
print "<hr><h3>3. Collected variables for export:</h3>";
var_dump($relevantVars);
print "</pre>";

/* 4 - Get CSV export */
print "<hr><h3>4. Get results for specific vars</h3>";
$exportData=serviceLayerCall("survey.results.getRawdataCSV", array("surveyId" => 1112, "exportTypes" => array("QUESTIONNAIRE"), "includeVariables" => $relevantVars));
print base64_decode($exportData);

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Expand
title Configuring SoapUI
You need to have the full URL to the WSDL description, as described above, and the token. Basic authentication is also possible, the client will ask you to provide login information automatically. In this example we use https://my-efs/service/?handler=soap&wsdl=1&token=1234567890. SoapUI will read the description and create example SOAP requests for all available services. Double-clicking on a request will open the following window, click on the green execute button to submit the request and a response will be shown.

Expand
title Configuring Postman
You can create single requests by clicking on “New” and selecting “Request”, selecting the correct method and pasting the link to the service. When using POST requests, you need to specify the Body, selecting “raw” and “JSON” in the respective settings. All other tabs can be left to default values. To import all available EFS Service-Layer REST services, you will need to download the RAML file (https://my-efs/service/?handler=rest&raml=1&token=1234567890) and import it as a collection in Postman. The collections tab will now have a list of all available services on the EFS installation. Info Please note, that some complex EFS rest services cause Postman to reject the RAML file. In that case we recommend to create the requests individually.

Filtering results with conditions

Requests with “ByCriteria” in their name have the possibility to filter results by condition. These conditions can be simple one to one comparisons and complex requests joined by an operator. All examples are based on the POST /panel/circles/listByCondition REST service, which returns a list of Portals groups (circles).

Comparison

This is the easiest request, it matches the items based on a single property of the item, in this case the circleType. Please note, that condition must be replaced with the string logicalCondition for some services.

{
    "condition": {
        "comparison": {
            "variable": "circleType",
            "operator": "EQUAL",
            "value": "COMPANY_MANAGED"
        }
    }
}

Possible operator values for comparison: EQUAL, UNEQUAL, LESS_EQUAL, LESS_THAN, GREATER_EQUAL, GREATER_THAN, CONTAINS. Greater/smaller operators should only be applied to numeric values.

InComparison

This request allows comparison of a property to a list of acceptable values.

{
    "condition": {
        "inComparison": {
            "variable": "circleType",
            "operator": "IN",
            "value": [
                "COMPANY_MANAGED",
                "USER_MANAGED"
            ]
        }
    }
}

The only acceptable operator value for inComparison is IN.

Join

This type allows more complex requests, allowing two conditions (comparison, inComparison or join) to be joined by an AND or OR operator.

{
    "condition": {
        "join": {
            "operator": "AND",
            "condition1": {
                "comparison": {
                    "variable": "title",
                    "operator": "CONTAINS",
                    "value": "Test"
                }
            },
            "condition2": {
                "inComparison": {
                    "variable": "circleType",
                    "operator": "IN",
                    "value": [
                        "COMPANY_MANAGED",
                        "USER_MANAGED"
                    ]
                }
            }
        }
    }
}

The operator for joining two or more conditions can be AND, OR, the individual conditions are similarly structured as their single instances. Since join is an acceptable condition, more complex structures are allowed:

{
    "condition": {
        "join": {
            "operator": "AND",
            "condition1": {
                "join": {
                    "operator": "AND",
                    "condition1": {
                        "comparison": {
                            "variable": "title",
                            "operator": "CONTAINS",
                            "value": "Test"
                        }
                    },
                    "condition2": {
                        "inComparison": {
                            "variable": "circleProcessStatus",
                            "operator": "IN",
                            "value": [
                                "IDLE","IN_PROGRESS"
                            ]
                        }
                    }
                }
            },
            "condition2": {
                "inComparison": {
                    "variable": "circleType",
                    "operator": "IN",
                    "value": [
                        "COMPANY_MANAGED",
                        "USER_MANAGED"
                    ]
                }
            }
        }
    }
}

List of available services

A list of all available EFS Service-Layer services can be found on this page.