Lightning - Simple use case ( card, apex controller, layout, aura:if )

Simple use case ( card, apex controller, layout, aura:if )

Component
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<aura:component controller="classWithParameters">
    <aura:attribute name="name" type="String" />
    <aura:attribute name="phone" type="String" />
    <aura:attribute name="industry" type="String" />
    <aura:attribute name="type" type="String" />
    <aura:attribute name="result" type="String" />
    <aura:attribute name="flag" type="Boolean"  default="true"/>
    <aura:attribute name="flag1" type="Boolean"  default="false"/>
    <lightning:card iconName="standard:account">
    	<aura:set attribute="title">
            Account <br/>
            New Account
        </aura:set>
        <aura:set attribute="actions">
            <lightning:buttonGroup>
                <lightning:button label="submit" onclick="{!c.submitData}"/>
                <lightning:button label="cancel" onclick="{!c.cancel}"/>
            </lightning:buttonGroup>
        </aura:set>
        <lightning:layout multipleRows="true">
            <aura:if isTrue="{!v.flag}">
                <lightning:layoutitem size="6">
                    <lightning:input label="Enter Name" aura:id="one" type="string" required="true" value="{!v.name}"/>
                    <lightning:input label="Enter Phone" aura:id="two" type="string" required="true" value="{!v.phone}"/>
                    <lightning:input label="Enter Industry" aura:id="three" type="string" required="true" value="{!v.industry}"/>
                    <lightning:input label="Enter Type" aura:id="four" type="string" required="true" value="{!v.type}"/>
                </lightning:layoutitem>
                <aura:set attribute="else">
                        <lightning:layoutitem size="6">
                            Id:    		{!v.result} <br/>
                            Name : 		{!v.name}<br/>
                            Phone: 		{!v.phone}<br/>
                            Industry: 	{!v.industry}<br/>
                            Type: 		{!v.type}<br/>
                        </lightning:layoutitem>
                </aura:set>
            </aura:if>
        </lightning:layout>
    </lightning:card>
</aura:component>
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Controller
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({
	submitData : function(component, event, helper) {
        var action = component.get("c.createAcc");
        
        var a = component.find("one").get("v.value");
        var b = component.find("two").get("v.value");
        var c = component.find("three").get("v.value");
        var d = component.find("four").get("v.value");
        
        action.setParams({
            "name": a,
            "phone": b,
            "industry": c,
            "type": d
        }); 
        action.setCallback(this,function(response){
            var state= response.getState();
            if(state==='SUCCESS'){
                var result1 = response.getReturnValue();
                component.set("v.result", result1);
                component.set("v.flag", false); 
            }else{
                
            }
        }); 
        $A.enqueueAction(action);
		
	},
    cancel : function(component, event, helper) {
        
        component.set("v.name", null);
        component.set("v.phone", null);
		component.set("v.industry", null);
        component.set("v.type", null); 
        component.set("v.flag", true); 
	}
})
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Apex Class
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public class classWithParameters {
    
    @AuraEnabled
    public static String createAcc(String name, String phone, String industry, String type){
        String result;
        try{
            Account acc=new Account();
            acc.Name=name;
            acc.Phone=phone;
            acc.Industry=industry;
            acc.Type=type;
            insert acc;
            result = 'Account Created Successfully with Id'+acc.Id; 
        }catch(Exception e){
            result= 'Account Creation failed with error message: '+e.getMessage();
        } 
        return result;     
    }
}
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