[SalesForce] Upload functionality in visualforce page

enter image description here

I have a Visualforce page to upload the files to content and another Visualforce page with the list of items that got uploaded and list of items to upload the page. Now I need to add upload functionality against second page, i.e items to upload page.

I have added column to upload file against each item. Any one done this? Please help me with sample code

Best Answer

The best way (not easy for all) to do this use JS Remoting (Javascript remoting). It prevents from hitting Salesforce governor limit. But you should be aware that you cannot upload file which exceed the limit for object. If you are not familiar with JS remoting view these examples first before proceed.

Ex: to use js remoting:

// Javascript function called on button click to upload
    function uploadToSalesforce(data) {
      Visualforce.remoting.Manager.invokeAction(
            '{!$RemoteAction.MultiUploadHandler.uploadAttachment}', 
            fileName, contentOfFile, recordForWhichUploading,
            function(result, event){
                if (event.status) {
                    status = 'Upload Successful' + result;
                } else if (event.type === 'exception') {
                    status = 'Upload Error'+;
                } else {
                    status = 'Upload Error';
                }
            }, 
            {escape: true}
        );
    }

MultiuploadHandler is the name of class and uploadAttachment is static method (JS remoting can work with static methods only and can return String) . This function passes 3 parameters (for method in apex code) + function to show status.

Method in apex code this is for attachment you can change it for content document with little effort:

@RemoteAction
public static String uploadAttachment(String filename, String fileData, String record) {
    String user = UserInfo.getUserID();
    if(fileData==null)
        return String.valueOf('Invalid file data.');
    String base64 = fileData.substring(file.indexOf(',')+1);
    Blob actualdata = EncodingUtil.base64Decode(base64);
    if(actualdata.size()<=0)
        return String.valueOf('File size cannot be greater then 10MB.');
    Attachment att = new Attachment(ParentId=record, Body=actualdata);
    att.Name = filename;
    insert(att);
    return String.valueOf('Upload Successful!');
}

This example upload a attachment in orgnisation for selected record. Try to implement with documents.

Related Solutions

[SalesForce] Adding record to variable list replaces existing record values

You must add "attachment1 = new Attachment();" into "attach_new" method just before the return null; That should fix your problem

[SalesForce] Uploading files with visualforce page and attached it the record row

You need to use a wrapper class to have both the Expense__c record and it's attachment record in the pageblocktable. Change your current wrapper to something like this:

public class ExpenseWrapper
{
        public Expense__c exp{get; private set;}
        public Attachment att {get;set;}
        public Integer ident {get; private set;}

        public ExpenseWrapper(Integer inIdent)
        {
            ident=inIdent;
            exp=new Expense__c();
            att=new Attachment();
        }
}

The list you display in the pageblocktable should then be a List<ExpenseWrapper> instead of a List<Expense__c>.

Then create a file upload button inside the pageblocktable like this:

<apex:pageBlockTable value="{!wrapperList}" var="wrapperRecord" >           
    <apex:column headerValue="Date">
        <apex:inputField value="{!wrapperRecord.m.Date__c}"/>
    </apex:column>
    <apex:column headerValue="Food/Meal Expenses">
        <apex:inputField value="{!wrapperRecord.m.Food_Expenses__c}"/>
    </apex:column>
    <apex:column headerValue="Phone Expenses">
        <apex:inputField value="{!wrapperRecord.m.Phone_Expenses__c}"/>
    </apex:column>              
    <apex:column headerValue="File">
        <apex:inputFile value="{!wrapperRecord.a.body}" filename="{!wrapperRecord.a.name}"/>
    </apex:column>          
</apex:pageBlockTable>

Lastly, don't forget to update both the Expense__c records and the Attachments in your save method (updating the parentId on the Attachment records with the new Expense__c id's before saving them). Something like this:

public PageReference save()
{
    List<Expense__c> expes=new List<Expense__c>();
    List<Attachment> attToInsert=new List<>(Attachment);
    for (ExpenseWrapper wrap : wrappers){
        expes.add(wrap.exp);
    } 
    insert expes;

    Integer counter = 0;
    for(Expense__c exp : expes){

        if(exp.Id != null){
            if(wrappers[counter].att != null){
                wrappers[counter].att.parentId = exp.Id;
                attToInsert.add(wrappers[counter].a);
            }
        }
        counter++;
    }
    insert attToInsert;

    return new PageReference('/' +   Schema.getGlobalDescribe().get('Expense__c').getDescribe().getKeyPrefix() + '/o');
}

Best Answer

Related Solutions

[SalesForce] Adding record to variable list replaces existing record values

[SalesForce] Uploading files with visualforce page and attached it the record row

Related Topic