On button click export the parent its child object records into xml file ?
Can anyone help 

I have two custom objects, company and employees
company object is parent and employee is child ,
I have a custom button on company objects, i have list of 3 companies, when i click that custom botton it should give the list of emplyees under that parictaular company and also that records shuold be editable to save.
 

I'm fresher , i would like to do a administrator certification, since i'm new i dont know the procedure and also about that can anyone help me ?

I have two custom objects, company and employees
company object is parent and employee is child ,
I have a custom button on company objects, i have list of 3 companies, when i click that custom botton it should give the list of emplyees under that parictaular company and also that records shuold be editable to save.
 

Requirement: There is a button "Export Today "  which is used to export account records in the form of csv in lightning component(Account_Detail_Component).In the helper ,we have "convertArrayOfObjectsToCSV" function which is used to convert object records into csv. I am able to display account fields values i.e 'Name','AccountNumber','Id'  in csv.But I am not able to display parent account field values.
For example below query return account field values and parent field value 
Select id,name,accountnumber,parent.accountnumber from Account where parent.id!=null and parent.accountnumber!=null.Could any one please post javascript code which needs to be used in helper fucntion for displaying parent  account records.





Component:
<aura:component  controller="CsvDownloadCtrller" implements="force:appHostable">
    <aura:attribute name="AcctLst" type="Account[]"></aura:attribute>
    <aura:handler name="init" value="{!this}" action="{!c.loadAcctRcrds}"/>
    <div class="slds-box slds-box">
  <article class="slds-card">
  <div class="slds-card__header slds-grid">
    <header class="slds-media slds-media_center slds-has-flexi-truncate">
      
      <div class="slds-media__body">
        <h2 class="slds-card__header-title">
          <a href="javascript:void(0);" class="slds-card__header-link slds-truncate" title="Accounts">
            <span class="slds-text-heading_small">Account List View</span>
          </a>
        </h2>
      </div>
        
      <div class="slds-no-flex">
        <button class="slds-button slds-button_brand" onclick="{!c.exprtTodysRecrds}">Export Today</button>
        <button class="slds-button slds-button_brand">Export Weekly</button>  
      </div>
    </header>
  </div>
</article>
        
 <article class="slds-card">
  <div class="slds-card__header slds-grid">
    <header class="slds-media slds-media_center slds-has-flexi-truncate">
      
      <div class="slds-media__body">
        <h2 class="slds-card__header-title">
          <a href="javascript:void(0);" class="slds-card__header-link slds-truncate" title="Accounts">
            <span class="slds-text-heading_small">Search Accounts</span>
          </a>
        </h2>
      </div>
      
    </header>
  </div>
</article>
<div class="slds-form slds-form_compound">
    <fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">
<div class="slds-form-element slds-size_1-of-2">
<lightning:select name="select1" label="Account Type" required="true">
        <option value="">choose one...</option>
        <option value="1">one</option>
        <option value="2">two</option>
        <option value="3">three</option>
        <option value="4">four</option>
        <option value="5">five</option>
    </lightning:select>
</div>
<div class="slds-form-element slds-size_1-of-2">
<lightning:input aura:id="field" label="Parent Account Number" name="ParentAccountNumber"  />
</div>
</div>
</div>
</fieldset>
<fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">
<div class="slds-form-element slds-size_1-of-2">
</div>
<div class="slds-form-element slds-size_1-of-2">
<lightning:input aura:id="field" label="Account Number" name="AccountNumber"  />   
</div>    
</div>
</div>
</fieldset>
 <fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">    
<div class="slds-form-element slds-size_1-of-2">
    <lightning:textarea name="input1" label="Description" />    
</div>
<div class="slds-form-element slds-size_1-of-2">
<lightning:select name="select1" label="Country" required="true">
        <option value="">choose one...</option>
        <option value="1">one</option>
        <option value="2">two</option>
        <option value="3">three</option>
         <option value="4">four</option>
    </lightning:select>  
</div>    
</div>
</div>
</fieldset> 
 <fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">    
<div class="slds-form-element slds-size_1-of-2">        
</div>
<div class="slds-form-element slds-size_1-of-2">    
</div>    
</div>
</div>
</fieldset>
 <fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">    
<div class="slds-form-element slds-size_1-of-2">        
</div>
<div class="slds-form-element slds-size_1-of-2">    
</div>    
</div>
</div>
</fieldset>          
 <fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">    
<div class="slds-form-element slds-size_1-of-2">
        
</div>
<div class="slds-form-element slds-size_1-of-2"> 
    <lightning:input type="date" name="input1" label="From Date" /> 
</div>    
</div>
</div>
</fieldset>   
<fieldset class="slds-form-element">
<div class="slds-form-element__group">
<div class="slds-form-element__row">    
<div class="slds-form-element slds-size_1-of-2">        
</div>
<div class="slds-form-element slds-size_1-of-2"> 
    <lightning:input type="date" name="input1" label="To Date" /> 
</div>    
</div>
</div>
</fieldset>  
</div>
       
<div class="slds-no-flex slds-align_absolute-center slds-m-top_xx-large">
        <button class="slds-button slds-button_brand" style="width:100px">Search</button>
        <button class="slds-button slds-button_brand" style="width:100px">Clear</button>  
      </div> 
</div> 
</aura:component>

controller:
({
    loadAcctRcrds:function(component,event,helper){
        
       var action = component.get("c.getAccounts");
        action.setCallback(this,function(response){
        var state = response.getState();
            
            
            
            if(state == "SUCCESS"){
                
                component.set("v.AcctLst",response.getReturnValue());
                
            }
            else{
                alert('failed');
                
            }
        });
        $A.enqueueAction(action);      
        
    },
    
    exprtTodysRecrds : function(component, event, helper) {
         var stockData = component.get("v.AcctLst")    
         var csv = helper.convertArrayOfObjectsToCSV(component,stockData);
          if (csv == null){return;} 
        
        // ####--code for create a temp. <a> html tag [link tag] for download the CSV file--####     
         var hiddenElement = document.createElement('a');
          hiddenElement.href = 'data:text/csv;charset=utf-8,' + encodeURI(csv);
          hiddenElement.target = '_self'; // 
          hiddenElement.download = 'ExportData.csv';  // CSV file Name* you can change it.[only name not .csv] 
          document.body.appendChild(hiddenElement); // Required for FireFox browser
          hiddenElement.click(); // using click() js function to download csv file
        
        
    }
})


Helper:

({
        
    convertArrayOfObjectsToCSV : function(component,objectRecords){
        // declare variables
        var csvStringResult, counter, keys, columnDivider, lineDivider,parentKey;
       
        // check if "objectRecords" parameter is null, then return from function
        if (objectRecords == null || !objectRecords.length) {
            return null;
         }
        // store ,[comma] in columnDivider variabel for sparate CSV values and 
        // for start next line use '\n' [new line] in lineDivider varaible  
        columnDivider = ',';
        lineDivider =  '\n';
 
        // in the keys valirable store fields API Names as a key 
        // this labels use in CSV file header  
        keys = ['Name','AccountNumber','Id','Parent' ];
        //parentKey=['AccountNumber'];
        
        csvStringResult = '';
        csvStringResult += keys.join(columnDivider);
        csvStringResult += lineDivider;
 
        for(var i=0; i < objectRecords.length; i++){   
            counter = 0;
           
             for(var sTempkey in keys) {
                var skey = keys[sTempkey] ; 
                 
                /* if(skey=='Parent'){
                     for(var pTempkey in parentKey){
                         csvStringResult += '"'+ objectRecords[i][skey][pTempkey]+'"';                       
                         
                     }    
                     
                     
                 }*/
                
 
              // add , [comma] after every String value,. [except first]
                  if(counter > 0){ 
                      csvStringResult += columnDivider; 
                   }   
               
               csvStringResult += '"'+ objectRecords[i][skey]+'"'; 
               
                /* if(csvStringResult.includes("Parent")){
                     for(var sTemp in parentKey){
                         var orgnKey = parentKey[sTemp];        
                        csvStringResult += '"'+ objectRecords[i][skey][orgnKey]+'"'; 
                         
                     }
                     
                 } */ 
                 
                 
               
               counter++;
             
             } // inner for loop close     
             csvStringResult += lineDivider;
          }// outer main for loop close 
       
       // return the CSV formate String 
        return csvStringResult;        
    },

})

Apex Controller:

public class CsvDownloadCtrller {
    
    @AuraEnabled
    public static List<Account> getAccounts(){
       return [Select id,name,accountnumber,parent.accountnumber from Account where parent.id!=null and parent.accountnumber!=null];
              
        
    } 

}