Saving Object record through Lightning

Question

I'm trying below example which is giving ERROR as response. Any idea on how to get the below code execution successfully:

Component:
<aura:component controller="ConCreation">
    <aura:attribute name="conInfo" type="Contact" default="{'sObject':'conatct','LastName':''}"/>
      <ui:inputText aura:id="LastName" label="Last Name"
                    value="{!v.conInfo.LastName}"
                    required="true"/>

      <ui:inputText aura:id="FirstName" label="First Name"
                    value="{!v.conInfo.FirstName}"
                    required="true"/>    
    <ui:button press="{!c.saveCon}" label="click"/>    
</aura:component>

Aura controller:

({
    saveCon : function(component, event) {
        var con = component.get("v.conInfo");

        var action1 = component.get("c.saveContact");
        action1.setParams({
        "c": con
       });
        action1.setCallback(this, function(response) {
            var state = response.getState();
            console.log('state--'+state);            
            if (component.isValid() && state === "SUCCESS") {
                component.set("v.conInfo", response.getReturnValue());
            }
        });
        $A.enqueueAction(action1);       
    }
})

Aura apex Class:

global with sharing class ConCreation{
    @auraenabled
    public static string saveContact(contact c){
        if(c != null)
        {
            insert c;
            system.debug('c--'+c);
        }
        return c.id;
    }
}

Answer 1

You should replace sObject in your default with sobjectType as it is the only way the sobject will be recognised in the controller.

Also, you return the id of the contact in your apex classes and set it as a the v.ConInfo which changes the type of the aura attribute and prevent any use after the first one.

Answer 2

Try this ;)

You have to pass function parameter value in String format then deserialize them;

In the component controller pass string instead of a JavaScript object:

action1.setParams({
    "c": JSON.stringify(con)
});

Then in Apex deserialize the string

@AuraEnabled
public static Id saveContact(String c) {
    Contact con = (Contact) Json.deserialize(c, Contact.class);
    System.debug(con);
    if(con != null){
        insert con;
        return con.Id;           
    }
    return null;
}