How to remove empty objects from array of objects?

Chinmayee1
Giga Contributor

Hi,

In an integration , I have to pass the sys_id and fetch the attachments of that record.

-some records have multiple attachments and some have none

-Passing the sys_id in for loop.

Issue : Getting empty arrays along with arrays that has values

below is my script include

getAttachment : function(arrayString){
var r = new sn_ws.RESTMessageV2('Knowledge Integration for Bulk upload', 'Get Article');
r.setStringParameter('Accept', 'application/json');
r.setEndpoint('https://bayersidev.service-now.com/api/sn_km_api/knowledge/articles/'+arrayString);    
var response = r.execute();
var responseBody = response.getBody();    
var parser = new JSONParser();
var parsed = parser.parse(responseBody);
var recordSysId=[];

if(parsed.result.attachments.length !=undefined)
{
var contentArr = [];
var num = new GlideRecord(parsed.result.template_table);
num.addQuery("u_bayer_fmo_number",parsed.result.number);
num.query();
if(num.next()){
recordSysId =num.sys_id;
}
var attachmentLength = parsed.result.attachments.length;
for(var n =0;n<attachmentLength;n++)
    {
var attachment ={};
attachment.attachmentID=parsed.result.attachments[n].sys_id;
attachment.sysid=parsed.result.sys_id;
attachment.file_name = parsed.result.attachments[n].file_name;
attachment.size_bytes = parsed.result.attachments[n].size_bytes;
attachment.table=parsed.result.template_table;
attachment.recordSysId = recordSysId;

contentArr.push(attachment);
    }

    gs.log("attachment json :"+contentArr);
    return JSON.stringify(contentArr);

}
},
   

Below is my scheduled job

var arrayString=[],contentArr=[],attachmentMap=[],embeddedID=[],embedContentMap=[];
var kbUpload = new KnowledgeBulkUpload;
arrayString = kbUpload.searchArticle();

gs.log("ArrayString :"+arrayString.length);//

for(var a=0;a<arrayString.length;a++){
kbUpload.getArticle(arrayString[a]);}

for(var b=0;b<arrayString.length;b++){
contentArr = kbUpload.getAttachment(arrayString[b]);
}

gs.log("Attachments :"+contentArr.length);

for(var i=0;i<contentArr.length;i++){
attachmentMap = kbUpload.attachmentUpdate(contentArr[i]);}

 

below are the logs

Attachments :[][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][][{"attachmentID":"128c35941b9d14541c6442eacd4bcbf2","sysid":"828cf9541b9d14541c6442eacd4bcbc4","file_name":"JIRA Workflow Demand Management (1).pptx","size_bytes":"576420","table":"u_kb_template_end_user"},{"attachmentID":"2e8cb9941b9d14541c6442eacd4bcb4c","sysid":"828cf9541b9d14541c6442eacd4bcbc4","file_name":"Workflow Status Matrix.xlsm","size_bytes":"101326","table":"u_kb_template_end_user"},{"attachmentID":"5e8c35941b9d14541c6442eacd4bcbf0","sysid":"828cf9541b9d14541c6442eacd4bcbc4","file_name":"JIRA with myCloud.docx","size_bytes":"736265","table":"u_kb_template_end_user"}],[],[],[]

 

attachment json :

 

find_real_file.png

How do I eliminate the empty ones and pass only the ones with value to my script include? I need to pass each json object to another function and it should run only three times as obj.length.

 

Please help.

Thanks & Regards,

Chinmayee Mishra

27 REPLIES 27

asifnoor
Kilo Patron

Hi,

Filter the final array like this and it will remove the empty ones.

Assuming arr is an array containing empty and other data. Then try liek this.

arr = arr.filter(function(e){return e});
gs.print(arr);

Mark the comment as a correct answer and also helpful once worked.

Hello Chinmayee,

Did you try the code that I gave you? It will remove the empty elements from the array and return back you the array.

Just use this line, thats enough.

arr = arr.filter(function(e){return e});

In place of arr, use your array name.

What is function(e)? 

what is return e?

there must be a body of the function. 

In this json log , my recordSysId value is coming empty. seems like scope issue. Would you mind checking on that please?