<aura:application>
<ns: myAwesomeMaplat=”12.9049314.77.6460073.6z”
lon=”122.4167” />
<ns: weather lat=”37.7833” lon =”12.904” />
</aura:application>

public with sharing class ContactController{
@AuraEnabled public static List<Contact>getContacts(){
List<Contact> contacts =[SELECT Id, Name, MailingStreet, Phone, Email, LeadSource     FROM Contact];
}
}

<aura:component>
<aura:attribute name=”contact” type=”Contact” />
<lightning:card variant=”Narrow” title=”{!v.contact.Name}”
iconName=”standard:contact”>
<aura:set attribute=”actions”>
<lightning:button name=”details” label=”Details” onclick=”{!c.goToRecord}” />
</aura:set>
<aura:set attribute=”footer”>
<lightning:badge label=”{!v.contact.Email}”/>
</aura:set>
<p class=”slds-p-horizontal_small”>
{!v.contact.Phone}
</p>
<p class=”slds-p-horizontal_small”>
{!v.contact.MailingStreet}
</p>
</lightning:card>
</aura:component>

<aura:component implements=”force:appHostable” controller=”ContactController”>
<aura:handler name=”init” value=”{!this}” action=”{!c.doInit}”/>
<aura:attribute name=”contacts” type=”Contact[]”/>
<aura:attribute name=”contactList” type=”Contact[]”/>
<aura:attribute name=”totalContacts” type=”Integer”/>
<div class=”slds-page-header slds-page-header_object-home”>
<lightning:layout>
<lightning:layoutItem>
<lightning:iconiconName=”standard:contact” />
</lightning:layoutItem&gt
<lightning:layoutItem class=”slds-m-left_small”>
<p class=”slds-text-title_capsslds-line-height_reset”>Contacts</p>
<h1 class=”slds-page-header__titleslds-p-right_x-small”>Contact Viewer</h1>
</lightning:layoutItem>
</lightning:layout>
<lightning:layout>
<lightning:layoutItem>
<p class=”slds-text-body_small”>{!v.totalContacts} Contacts • View Contacts Based on Lead Sources</p>
</lightning:layoutItem>
</lightning:layout>
</div>
<lightning:layout>
<lightning:layoutItem padding=”horizontal-medium” >
<lightning:selectaura:id=”select” label=”Lead Source” name=”source” onchange=”{!c.handleSelect}” class=”slds-m-bottom_medium”>
<option value=””>– Select a Lead Source –</option>
<option value=”Referral” text=”Referral”/>
<option value=”Social Media” text=”Social Media”/>
<option value=”All” text=”All”/>
</lightning:select>

<aura:iteration var=”contact” items=”{!v.contacts
<c:contacts contact=”{!contact}”/>
</aura:iteration>
</lightning:layoutItem>
</lightning:layout>
</aura:component>

({
doInit : function(component, event, helper){
helper.loadContacts(component);
}
handleSelect : function(component, event, helper){
var contacts = component.get(“v.contacts”);
var contactList = component.get(“v.contactList”);
var selected = event.getSource().get(“v.value”);
var filter = []; var k = 0;
for (var i=0; i<contactList.length; i++){
var c = contactList[i];
if (selected != “All”){
if(c.LeadSource == selected){
filter[k] = c;k++;
}
} else {
filter = contactList;
}
} component.set(“v.contacts”, filter); helper.updateTotal(component);}
}}

({
loadContacts : function(cmp) {
var action = cmp.get(“c.getContacts”);
action.setCallback(this, function(response){
var state = response.getState();
if (state === “SUCCESS”){
cmp.set(“v.contacts”, response.getReturnValue());
cmp.set(“v.contactList”, response.getReturnValue()); this.updateTotal(cmp);
var toastEvent = $A.get(“e.force:showToast”);
if (state === ‘SUCCESS’){
toastEvent.setParams({
“title”: “Success!”, “message”: ” Your contacts have been loaded successfully.”
});
}
else{
toastEvent.setParams({
“title”: “Error!”, “message”: ” Something has gone wrong.” });
}
toastEvent.fire(); }); $A.enqueueAction(action); })
updateTotal: function(cmp){
var contacts = cmp.get(“v.contacts”);
cmp.set(“v.totalContacts”, contacts.length); }
})