Working on TrailHead Challenge... (https://developer.salesforce.com/trailhead/force_com_introduction/data_security/data_security_sharing_rules)

Tasks completed:
The custom object must be named 'Project' with a resulting API name of 'Project__c'.   Done
The Name field for 'Project' must be of type Text (not Auto-Number).  Done
The custom object 'Project' must have a custom field of type picklist named 'Priority' with a resulting API name of 'Priority__c'. Done
The role label should be 'Training Coordinator' with the resulting 'Role Name' of 'Training_Coordinator'. Note that you may already have this role in your role hierarchy from a previously attempted challenge.   Done
Set the organization wide settings to public read only.    Done

Here is where I think is the problem:
The sharing rule can be named anything.  
 Create sharing rule under "Sharing Settings" under Project Sharing Rules..  Create a criteria based project sharing rule with Priority custom field equal to High.  Shared with role "Training Coordinator" as read-only access.


What am I missing?

Hi everyone!
I have a problem with the challenge, my App work fine but I don´t pass the challenge. This is my code:

campingList.cmp:
 

<aura:component controller="CampingListController">
    
    <ltng:require styles="/resource/SLDS105/assets/styles/salesforce-lightning-design-system-ltng.css"/>

	<aura:handler name="init" action="{!c.doInit}" value="{!this}"/>
    
     <aura:attribute name="newItem" type="Camping_Item__c"
     default="{ 'sobjectType': 'Camping_Item__c',
                    'Price__c': 0,
                    'Quantity__c': 0}"/>
    
    <div class="slds-card slds-p-top--medium">
    <ui:inputText aura:id="campname" label="Camping Name"
        value="{!v.newItem.Name}" required="true"/>
    <ui:inputCheckbox aura:id="packed" label="Packed?"
        value="{!v.newItem.Packed__c}"/>
     <ui:inputCurrency aura:id="price" label="Price"
        value="{!v.newItem.Price__c}" required="true"/>
     <ui:inputNumber aura:id="quantity" label="Quantity"
        value="{!v.newItem.Quantity__c}" required="true"/>
    
    <ui:button label="Create Camping" press="{!c.clickCreateCamping}"/>
    </div>
    
    <aura:attribute name="items" type="Camping_Item__c[]"/>	 
    <div class="slds-card slds-p-top--medium">
        <header class="slds-card__header">
            <h3 class="slds-text-heading--small">Campings</h3>
        </header>
        <section class="slds-card__body">
            <div id="list" class="row">
                <aura:iteration items="{!v.items}" var="item">
                    <c:campingListItem item="{!item}"/>
                </aura:iteration>
            </div>
        </section>
    </div>
</aura:component>

campingListController.js:
 

({
    
    // Load expenses from Salesforce
	doInit: function(component, event, helper) {

    // Create the action
    var action = component.get("c.getItems");

    // Add callback behavior for when response is received
    action.setCallback(this, function(response) {
        var state = response.getState();
        if (component.isValid() && state === "SUCCESS") {
            component.set("v.items", response.getReturnValue());
        }
        else {
            console.log("Failed with state: " + state);
        }
    });

    // Send action off to be executed
    $A.enqueueAction(action);
	},
    
    clickCreateCamping: function(component, event, helper) {
        
        if(helper.validateCampingForm(component)){
	        // Create the new expense
	        var newCamping = component.get("v.newItem");
	        helper.createItem(component, newCamping);
	    }
    }
})

campingListHelper.js
 

({
    
    createItem: function(component, camping) {
        
        var action = component.get("c.saveItem");
        action.setParams({
            "item": camping
        });
    	action.setCallback(this, function(response){
        var state = response.getState();
        if (component.isValid() && state === "SUCCESS") {
            var campings = component.get("v.items");
            campings.push(response.getReturnValue());
            component.set("v.items", campings);
        }
    	});
    	$A.enqueueAction(action);
    },
    
    validateCampingForm: function(component) {
      
     	var validQuantity = true;
        var validPrice = true;

        var nameField = component.find("campname");
        var campname = nameField.get("v.value");
        
        var quantityField = component.find("quantity");
        var quantity = quantityField.get("v.value");
        
        var priceField = component.find("price");
        var price = priceField.get("v.value");
        
        if ($A.util.isEmpty(campname) || $A.util.isEmpty(quantity) || $A.util.isEmpty(price)){
            validQuantity = false;
            validPrice = false;
            nameField.set("v.errors", [{message:"Camping name, quantity or price can't be blank."}]);
        }
        else {
            nameField.set("v.errors", null);
        }
		
		return(validQuantity && validPrice);        
	}
})

CampingListController.apxc:
 

public with sharing class CampingListController {

    @AuraEnabled
    public static List<Camping_Item__c> getItems() {
    
        // Check to make sure all fields are accessible to this user
        String[] fieldsToCheck = new String[] {
            'Id', 'Name', 'Packed__c', 'Price__c', 'Quantity__c'
        };
        
        Map<String,Schema.SObjectField> fieldDescribeTokens = 
            Schema.SObjectType.Camping_Item__c.fields.getMap();
        
        for(String field : fieldsToCheck) {
            if( ! fieldDescribeTokens.get(field).getDescribe().isAccessible()) {
                throw new System.NoAccessException();
                return null;
            }
        }        
        
        // Perform isAccessible() checking first, then
        return [SELECT Id, Name, Packed__c, Price__c, Quantity__c 
                FROM Camping_Item__c];
    }
    
    @AuraEnabled
    public static Camping_Item__c saveItem(Camping_Item__c item) {
        // Perform isUpdatable() checking first, then
        upsert item;
        return item;
    }
}

I am still getting this error:

Challenge Not yet complete... here's what's wrong:
The campingList JavaScript helper isn't saving the new record to the database or adding it to the 'items' value provider.

My App save the new record into the database and add it to the "items" list.
Thanks for your answers!