"Unable to read Sobject" saving record with displayed fields which use force:inputField OR while passing a new object to an apex method in lightning
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"Unable to read Sobject" saving record with displayed fields which use force:inputField OR while passing a new object to an apex method in lightning

Apex , Lightning

Last updated 2017-09-08 ·Reference W-3849271 ·Reported By 10 users

Fixed - Winter '18

Scenario 1:

Using force:inputField tag to display input for lookup field in lightning component. Using this lightning component in record detail fails to update the data with error "Unable to read Sobject"

This only fails with update while the same works on create.

Scenario 2:

When passing a new object record to an apex method from a lightning component

Scenario 1:

1. Create a custom object (Master) with the following custom fields

a. Text
b. Lookup - Account
c. Lookup - Opportunity

2. Create a test account record. Note the account id.

3. Insert a new Master object
a. Name - anything
b. Text - anything
c. Account lookup - account from step 2

4. Create an apex class (saveAccountClass) with the following code
public class saveAccountClass{
public static ObjWithTwoLookups__c getRecordUsingChildRecord(Id accId){
ObjWithTwoLookups__c obj = [SELECT Id,message__c, Opportunity__c from ObjWithTwoLookups__c where Account__c=: accId];
return obj;

public static void updateRecord(ObjWithTwoLookups__c obj){
ObjWithTwoLookups__c obj2 = [SELECT message__c, Opportunity__c, Account__c from ObjWithTwoLookups__c where Id=:obj.Id];
if(obj2 != null){
obj2.message__c = obj.message__c;
obj2.Opportunity__c = obj.Opportunity__c;
obj2.Account__c = obj.Account__c;
update obj2;

5. Create a component with the following code
<aura:component controller="saveAccountClass" implements="flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId" access="GLOBAL" >
<aura:attribute name="recordId" type="Id"/>
<aura:attribute name="master_obj" type="ObjWithTwoLookups__c" default="{sobjectType: 'ObjWithTwoLookups__c' }"/>
<aura:handler name="init" value="{!this}" action="{!c.doInit}"/>

<ui:inputText aura:id="message" value="{!v.master_obj.message__c}"/>
<force:inputField aura:id="acct" value="{!v.master_obj.Account__c}"/>
<force:inputField aura:id="oppty" value="{!v.master_obj.Opportunity__c}"/>
<ui:button label="Save" press="{!c.save}"/>

6. Create a component controller with the following code:
doInit : function(component, event, helper) {
var action = component.get("c.getRecordUsingChildRecord");
action.setCallback(this, function(response){
var state = response.getState();
if(state != "SUCCESS"){
alert('Failed to get record');
var ret = response.getReturnValue();
component.set("v.master_obj", ret);

save : function(component, event, helper) {
var master_obj = component.get("v.master_obj");
alert(master_obj.Opportunity__c + " " + master_obj.Account__c + " " + master_obj.message__c)
var action = component.get("c.updateRecord");
action.setCallback(this, function(response){
var state = response.getState();
if(state != "SUCCESS"){
alert('Failed to update record');

7. Edit your account's page created in step 2. Add the component to your account page. Every time the page is loaded, the component will retrieve your master object using the account id.

8. If you change the message text value without providing an Account or Opportunity value, the record will get updated.

9. When Account or Opportunity is provided via the component, the code fails to invoke the apex class method to save the updated data to server.

Scenario 2:

Pass a new object from a lightning component to an apex method:

"myaccount" :myAccount

global static Account reproApexMethod(Account myaccount) {

return myaccount;

set sobjectType before invoking the apex method


Is it Fixed?

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