Custom Lightning components Lightning for Gmail

Question

I am creating a custom component for Lightning for Gmail.

I want to read the content of email body. I created a test component and a controller for it.

<aura:component implements="clients:availableForMailAppAppPage,clients:hasItemContext">
    <aura:attribute name="messageBody" type="String" />
    <ui:button label="Click" press="{!c.myAction}"/>
</aura:component>

myAction : function(component, event, helper) {
    console.log(component.get("v.messageBody"));
}

But in the console after clicking my button I see only "undefined".

At the same time, if for example I add to the controller console.log(component.get("v.people").from.name);, then in the console I can see the sender's name.

Also I tried to remove from the code line <aura:attribute name="messageBody" type="String" />, but nothing has changed.

What am I doing wrong?

Answer 1

the message body and people are populated at some point after your component has been created. A few suggested changes to your code:

• Any attributes on an interface that you implement you do not need to specify in your component.
• You'll want to listen to "change" events on the attributes you care about: <aura:handler name="change" value="{!v.people}" action="{!c.peopleChanged}" /> That will listen to changes to the people attribute. Your component is first created and then these attribute values are populated.
• You can also do things like cmp.get('v.people.from.email') that will automatically check for null/undefined for you.

I hope this helps.