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[Cannot read property 'setParams' of null]

Lightning Event Modelerror Cannot read property 'setParams' of undefined - lightning componentError in $A.getCallback() [Cannot read property 'setParams' of undefined]Error Implementing force:showToast - Cannot read property 'setParams' of undefinede.force:navigateToURL: [Cannot read property 'setParams' of undefined]save two records in two objects with a single save button with lightning componentsCannot read property 'setParams' of nullCreate and Navigate to an Account record Detail Page

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

1

Am quite new to Lightning and trying to understand Events so far i have created two components making Parent Child component with help of Events. But getting the error

"Action failed: c:MySampleChildCmp$controller$handleClick [Cannot read
property 'setParams' of null] Failing descriptor:
{c:MySampleChildCmp$controller$handleClick}"

Unable to identify the Error.

Here is the code.

ChildToParentEvent.evt:-

<aura:event type="COMPONENT">

    <aura:attribute type="String" name="firstName"/>

    <aura:attribute type="String" name="lastName"/>

    <aura:attribute type="String" name="Phone"/>

</aura:event>

MySampleChildCmp:-

<aura:component>

    <!--<aura:attribute type="String" name="userData" default=""/>

    <aura:attribute type="String" name="firstName" default=""/>

    <aura:attribute type="String" name="lastname" default=""/>

    <aura:attribute name="Phone" type="Integer" default=""/>-->

    <aura:registerEvent name="ChildToParentEvnt" type="c:ChildToParent"/>

    <lightning:button variant="brand" label="Brand action" title="Brand action" onclick="{! c.handleClick }" />

</aura:component>

MySampleChildCmpController:-

({

    handleClick : function(component, event, helper) {

        alert('called Child component');        

        var evt = component.getEvent("c.ChildToParentEvnt");

        evt.setParams({'firstName' : SFDC,

                        'lastName' : Developer,

                        'Phone' : 9999999

                       });

            evt.fire();

        alert('called Event');

    }

})

MySampleParentCmp:-

<aura:component >

    <aura:attribute type="String" name="userData" default="" />

    <aura:attribute type="String" name="firstName" default="ABC" />

    <aura:attribute type="String" name="lastName" default="DEF" />

    <aura:attribute type="Integer" name="Phone" default="" />

    <aura:attribute type="boolean" name="callChild" default="false" />

    <aura:handler name="ChildToParentEvnt" event="c:ChildToParent" action="{!c.handleClick}"/>

        <div>

           <c:MySampleChildCmp />

    </div>

    <div>

        <h2>User Data from Event </h2>

        Name    : {!firstName} {!lastName}<br/><br/>

        Phone    : {!Phone}

    </div>

</aura:component>

MySampleParentController:-

({

    handleClick : function(component, event, helper) {

        alert('Called Parent');

        var lastName= event.getParam('lastName');

        var firstName= event.getParam('firstName');

        var Phone= event.getParam('Phone');

        component.set('v.lastName', lastName);

        component.set('v.firstName', firstName);

        component.set('v.phone', Phone);

    }

})

lightning-aura-components

share|improve this question

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Kindly format the code while asking question.
  
  – salesforce-sas
  9 hours ago
  

  
  
  
  

add a comment
 | 

1

Am quite new to Lightning and trying to understand Events so far i have created two components making Parent Child component with help of Events. But getting the error

"Action failed: c:MySampleChildCmp$controller$handleClick [Cannot read
property 'setParams' of null] Failing descriptor:
{c:MySampleChildCmp$controller$handleClick}"

Unable to identify the Error.

Here is the code.

ChildToParentEvent.evt:-

<aura:event type="COMPONENT">

    <aura:attribute type="String" name="firstName"/>

    <aura:attribute type="String" name="lastName"/>

    <aura:attribute type="String" name="Phone"/>

</aura:event>

MySampleChildCmp:-

<aura:component>

    <!--<aura:attribute type="String" name="userData" default=""/>

    <aura:attribute type="String" name="firstName" default=""/>

    <aura:attribute type="String" name="lastname" default=""/>

    <aura:attribute name="Phone" type="Integer" default=""/>-->

    <aura:registerEvent name="ChildToParentEvnt" type="c:ChildToParent"/>

    <lightning:button variant="brand" label="Brand action" title="Brand action" onclick="{! c.handleClick }" />

</aura:component>

MySampleChildCmpController:-

({

    handleClick : function(component, event, helper) {

        alert('called Child component');        

        var evt = component.getEvent("c.ChildToParentEvnt");

        evt.setParams({'firstName' : SFDC,

                        'lastName' : Developer,

                        'Phone' : 9999999

                       });

            evt.fire();

        alert('called Event');

    }

})

MySampleParentCmp:-

<aura:component >

    <aura:attribute type="String" name="userData" default="" />

    <aura:attribute type="String" name="firstName" default="ABC" />

    <aura:attribute type="String" name="lastName" default="DEF" />

    <aura:attribute type="Integer" name="Phone" default="" />

    <aura:attribute type="boolean" name="callChild" default="false" />

    <aura:handler name="ChildToParentEvnt" event="c:ChildToParent" action="{!c.handleClick}"/>

        <div>

           <c:MySampleChildCmp />

    </div>

    <div>

        <h2>User Data from Event </h2>

        Name    : {!firstName} {!lastName}<br/><br/>

        Phone    : {!Phone}

    </div>

</aura:component>

MySampleParentController:-

({

    handleClick : function(component, event, helper) {

        alert('Called Parent');

        var lastName= event.getParam('lastName');

        var firstName= event.getParam('firstName');

        var Phone= event.getParam('Phone');

        component.set('v.lastName', lastName);

        component.set('v.firstName', firstName);

        component.set('v.phone', Phone);

    }

})

lightning-aura-components

share|improve this question

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Kindly format the code while asking question.
  
  – salesforce-sas
  9 hours ago
  

  
  
  
  

add a comment
 | 

Am quite new to Lightning and trying to understand Events so far i have created two components making Parent Child component with help of Events. But getting the error

"Action failed: c:MySampleChildCmp$controller$handleClick [Cannot read
property 'setParams' of null] Failing descriptor:
{c:MySampleChildCmp$controller$handleClick}"

Unable to identify the Error.

Here is the code.

ChildToParentEvent.evt:-

<aura:event type="COMPONENT">

    <aura:attribute type="String" name="firstName"/>

    <aura:attribute type="String" name="lastName"/>

    <aura:attribute type="String" name="Phone"/>

</aura:event>

MySampleChildCmp:-

<aura:component>

    <!--<aura:attribute type="String" name="userData" default=""/>

    <aura:attribute type="String" name="firstName" default=""/>

    <aura:attribute type="String" name="lastname" default=""/>

    <aura:attribute name="Phone" type="Integer" default=""/>-->

    <aura:registerEvent name="ChildToParentEvnt" type="c:ChildToParent"/>

    <lightning:button variant="brand" label="Brand action" title="Brand action" onclick="{! c.handleClick }" />

</aura:component>

MySampleChildCmpController:-

({

    handleClick : function(component, event, helper) {

        alert('called Child component');        

        var evt = component.getEvent("c.ChildToParentEvnt");

        evt.setParams({'firstName' : SFDC,

                        'lastName' : Developer,

                        'Phone' : 9999999

                       });

            evt.fire();

        alert('called Event');

    }

})

MySampleParentCmp:-

<aura:component >

    <aura:attribute type="String" name="userData" default="" />

    <aura:attribute type="String" name="firstName" default="ABC" />

    <aura:attribute type="String" name="lastName" default="DEF" />

    <aura:attribute type="Integer" name="Phone" default="" />

    <aura:attribute type="boolean" name="callChild" default="false" />

    <aura:handler name="ChildToParentEvnt" event="c:ChildToParent" action="{!c.handleClick}"/>

        <div>

           <c:MySampleChildCmp />

    </div>

    <div>

        <h2>User Data from Event </h2>

        Name    : {!firstName} {!lastName}<br/><br/>

        Phone    : {!Phone}

    </div>

</aura:component>

MySampleParentController:-

({

    handleClick : function(component, event, helper) {

        alert('Called Parent');

        var lastName= event.getParam('lastName');

        var firstName= event.getParam('firstName');

        var Phone= event.getParam('Phone');

        component.set('v.lastName', lastName);

        component.set('v.firstName', firstName);

        component.set('v.phone', Phone);

    }

})

lightning-aura-components

share|improve this question

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

<aura:event type="COMPONENT">

    <aura:attribute type="String" name="firstName"/>

    <aura:attribute type="String" name="lastName"/>

    <aura:attribute type="String" name="Phone"/>

</aura:event>

<aura:component>

    <!--<aura:attribute type="String" name="userData" default=""/>

    <aura:attribute type="String" name="firstName" default=""/>

    <aura:attribute type="String" name="lastname" default=""/>

    <aura:attribute name="Phone" type="Integer" default=""/>-->

    <aura:registerEvent name="ChildToParentEvnt" type="c:ChildToParent"/>

    <lightning:button variant="brand" label="Brand action" title="Brand action" onclick="{! c.handleClick }" />

</aura:component>

({

    handleClick : function(component, event, helper) {

        alert('called Child component');        

        var evt = component.getEvent("c.ChildToParentEvnt");

        evt.setParams({'firstName' : SFDC,

                        'lastName' : Developer,

                        'Phone' : 9999999

                       });

            evt.fire();

        alert('called Event');

    }

})

<aura:component >

    <aura:attribute type="String" name="userData" default="" />

    <aura:attribute type="String" name="firstName" default="ABC" />

    <aura:attribute type="String" name="lastName" default="DEF" />

    <aura:attribute type="Integer" name="Phone" default="" />

    <aura:attribute type="boolean" name="callChild" default="false" />

    <aura:handler name="ChildToParentEvnt" event="c:ChildToParent" action="{!c.handleClick}"/>

        <div>

           <c:MySampleChildCmp />

    </div>

    <div>

        <h2>User Data from Event </h2>

        Name    : {!firstName} {!lastName}<br/><br/>

        Phone    : {!Phone}

    </div>

</aura:component>

({

    handleClick : function(component, event, helper) {

        alert('Called Parent');

        var lastName= event.getParam('lastName');

        var firstName= event.getParam('firstName');

        var Phone= event.getParam('Phone');

        component.set('v.lastName', lastName);

        component.set('v.firstName', firstName);

        component.set('v.phone', Phone);

    }

})

share|improve this question

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

share|improve this question

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

edited 9 hours ago

salesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

asked 9 hours ago

RagavendraRagavendra

1322 bronze badges

1 Answer
1

active

oldest

votes

3

Refer to this example. You are facing issue because of line component.getEvent("c.ChildToParentEvnt").

For getting view its v. and for getting controller method or apex method its c. BUT for getting event, you DO NOT have to use binder. Change the line to:

component.getEvent("ChildToParentEvnt")

share|improve this answer

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks peter, Now its working as expected
  
  – Ragavendra
  8 hours ago
  

  
  
  
  

add a comment
 | 

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3

Refer to this example. You are facing issue because of line component.getEvent("c.ChildToParentEvnt").

For getting view its v. and for getting controller method or apex method its c. BUT for getting event, you DO NOT have to use binder. Change the line to:

component.getEvent("ChildToParentEvnt")

share|improve this answer

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks peter, Now its working as expected
  
  – Ragavendra
  8 hours ago
  

  
  
  
  

add a comment
 | 

3

Refer to this example. You are facing issue because of line component.getEvent("c.ChildToParentEvnt").

For getting view its v. and for getting controller method or apex method its c. BUT for getting event, you DO NOT have to use binder. Change the line to:

component.getEvent("ChildToParentEvnt")

share|improve this answer

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks peter, Now its working as expected
  
  – Ragavendra
  8 hours ago
  

  
  
  
  

add a comment
 | 

Refer to this example. You are facing issue because of line component.getEvent("c.ChildToParentEvnt").

For getting view its v. and for getting controller method or apex method its c. BUT for getting event, you DO NOT have to use binder. Change the line to:

component.getEvent("ChildToParentEvnt")

share|improve this answer

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

component.getEvent("ChildToParentEvnt")

share|improve this answer

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges

answered 9 hours ago

salesforce-sassalesforce-sas

11k11 gold badge33 silver badges2828 bronze badges