When capturing photos, videos or sounds, SurveyToGo will automatically generate the attachment name in order to make it unique. While usually there is no importance for the attachment name, sometimes there might be and there might also be a need for you to control the name the attachment is given.
For this purpose, you can utilize a special call back function that enables you to override the default name and assign your own name to the attachment.
Using the “OnGetAttachmentNameEx” call back function
To use the OnGetAttachmentName call back you need to write the following call back function in the “Advanced scripts” of your survey:
OnGetAttachmentNameEx – this call back allows you to alter the name of the attachment that will be generated. It is called each time an attachment is captured and just before the engine decides on the name. Here is an example of the call back function:
void OnGetAttachmentNameEx (inFilePath, inName, inQuestionAttachmentCount, inGlobalAttachmentCount, eAttachmentType inType)
var retVal = "PHOTO_Q_"+CurrQues+"_ATTACH_NUMBER_"+inQuestionAttachmentCount;
|inFilePath||The full path of the local attachment file created on the device|
|inName||The name of the attachment as given by SurveyToGo|
|inQuestionAttachmentCount||The number of attachments in the current question (including this one)|
|inGlobalAttachmentCount||The number of attachments in the interview|
|inType||The type of the attachment|
The above function will generate attachment names such as “PHOTO_Q_3_ATTACH_NUMBER_1.jpg″ utilizing the index of the current question and the number of attachments. You can use any survey logic function in this code.
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