TL;DR
Passing a simple string to component controller is returning null. I have already read this post but it didn't seem to imitate what I'm doing here. Pass value from apex component to controller
This article I just found. How do i pass data from visualforce page to component's custom controller? I'm trying to do this, but I don't need an output value, I need the value accessible within the Constructor of the component controller. Is this possible?
Goal
Greetings salesforce warriors! I want to use fieldsets and pass in the api name of the fieldset into the functions of the component controller. This way I can reuse the components and modify the passin value to the name of fields that I want to use.
Problem w/ Code
When I attempt to passin a value from the ParentVFPage to the attribute passIn on the vf Component, the components controller is not receiving the value and only returning null.
VF Page (no controller)
I want to pass a string value from the page to the component.
<apex:page lightningStylesheets="false" showHeader="false">
<div class="slds-p-around_x-small">
<c:HB_BS_MenuItems />
<div class="slds-p-around_x-small"></div>
<c:HB_BS_Component
passIn="HB_Card"/>
</div>
</apex:page>
VF Component
<apex:attribute type="string" name="passIn" assignTo="{!fieldNames}" description="field set name"></apex:attribute>
<apex:component controller="HB_BS_UserController" allowDML="true">
<div class="slds-card__body slds-card__body_inner">
<apex:form id="ChangeUserDetails">
<apex:commandButton styleClass="slds-button slds-button_brand" action="{!save}" value="Save"/>
<apex:commandButton styleClass="slds-button slds-button_outline-brand" action="{!save}" value="Cancel"/>
<apex:repeat value="{!fields}" var="f">
<div class="slds-form-element">
<label class="slds-form-element__label" for="text-input-id-53">{!f.label}</label>
<div class="slds-form-element__control slds-input-has-icon slds-input-has-icon_right">
<apex:inputField styleClass="slds-input" value="{!user[f.fieldPath]}"/>
</div>
</div>
</apex:repeat>
</apex:form>
</div>
</apex:component>
Component Controller
public with sharing class HB_BS_UserController {
public User user {get;set;}
public String fieldNames;
public String getfieldNames(){
return fieldNames;
}
public void setfieldNames(String s){
fieldNames = s;
}
public HB_BS_UserController() {
System.debug(String.valueOf(this.getfieldNames()));
this.user = getUser();
}
// User Fields
public List<Schema.FieldSetMember> getFields(){
return SObjectType.User.FieldSets.HB_BS_UserAboutCard.getFields();
}
public User getUser(){
String query = 'SELECT ';
String userId = UserInfo.getUserId();
for(Schema.FieldSetMember f : this.getFields()){
query += f.getFieldPath() + ', ';
}
query += 'Id FROM User WHERE Id =: userId LIMIT 1';
return Database.query(query);
}
public void save(){
update user;
}
}
Result
The fieldNames value returns null.
