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Reading Ids from CSV for using in SOQL where clause.
Hi All,
I have a requirement where given the list of account Ids in CSV file and all related contacts under those accounts need to be extracted in CSV. For this I want to query all the contact with (Select ID,Name from contacts where Account.ID IN: [Read from csv file]) , or simple parsing the list of IDs from csv file to a variable and then querying on that variable. Can anyone help me out in how to achieve this through apex code.
Thank you.
I have a requirement where given the list of account Ids in CSV file and all related contacts under those accounts need to be extracted in CSV. For this I want to query all the contact with (Select ID,Name from contacts where Account.ID IN: [Read from csv file]) , or simple parsing the list of IDs from csv file to a variable and then querying on that variable. Can anyone help me out in how to achieve this through apex code.
Thank you.
You can refer below sample :
// Assuming in CSV file's first column contains Account Ids
public class FileUploader
{
public string nameFile{get;set;}
public Blob contentFile{get;set;}
String[] filelines = new String[]{};
List<Contact> lstContactToDisplay = new List<Contact>();
public Pagereference ReadFile()
{
nameFile=contentFile.toString();
filelines = nameFile.split('\n');
Set<Id> setIdAcc = new Set<Id>();
for (Integer i=1;i<filelines.size();i++)
{
String[] inputvalues = new String[]{};
inputvalues = filelines[i].split(',');
setIdAcc.add(inputvalues[0]);
}
try{
lstContactToDisplay = [SELECT Id, Name FROM Contact WHERE AccountId IN: setIdAcc];
// Do the necessary logic now
}
catch (Exception e)
{
ApexPages.Message errormsg = new ApexPages.Message(ApexPages.severity.ERROR,'An error has occured. Please check the template or try again later');
ApexPages.addMessage(errormsg);
}
return null;
}
}
<apex:page sidebar="false" controller="FileUploader">
<apex:form >
<apex:sectionHeader title="Upload data from CSV file"/>
<apex:pagemessages />
<apex:pageBlock >
<center>
<apex:inputFile value="{!contentFile}" filename="{!nameFile}" /> <apex:commandButton action="{!ReadFile}" value="Upload File" id="theButton" style="width:70px;"/>
<br/> <br/> <font color="red"> <b>Note: Please use the standard template to upload Accounts.</b> </font>
</center>
</apex:pageBlock>
</apex:form>
</apex:page>