[SalesForce] How to Access Wrapper class variable in javascript

Trying to access the wrapper class variable in javascript, but it's not serialized in apex controller. trying to get the value in for loop – mainly for validation purpose.

function validateApplicantInfo(thisvar, AddFields){

  /* Result from AddFields
   [MFF_Fields:[MFF_DateFldvalue=null, MFF_DepFldList=(), 
   MFF_DepPicklistOpts=null, MFF_FieldLabel=Account Name, MFF_FieldName=Name, 
   MFF_FieldOrderNum=0, MFF_FieldType=String, MFF_FieldValue=null....

   Need to loop through the wrapper class variables */

    var records = [];
    records = AddFields.MFF_Fields;
    for(var i = 0;  i< records.size; i++){

       if($("[id$='stringFld']").val() == '' && records[i].MFF_RequiredField == true){
          $("[id$='stringFld']").parent().addClass('slds-has-error');
          isError = true;
        }
     }

PS- Wrapper object is not serialized in apex controller

Best Answer

Since it's a global wrapper list you can access it directly in JavaScript. Use <apex:repeat> function in script to loop through the List.

function validateApplicantInfo(thisvar){

  <apex:repeat value="{!MFAddEditFields}" var="local">  
    if($("[id$='stringFld']").val() == '' && {!local.MFF_RequiredField}' == true){  
       $("[id$='stringFld').parent().addClass('slds-has-error');
          isError = true;
       }
  </apex:repeat> 
}

Related Solutions

[SalesForce] Dynamically expanding a wrapper class for an object as custom fields are added.

Here are a couple of general points on the subject...

Visualforce (and Apex) support map syntax so you can present in a basic way additional values established at runtime (e.g. obtained from describe calls or field sets or custom settings):

public class Wrapper {
    ...
    public String[] keys {get; set;} 
    public Map<String, String> extras {get; set;}
    ...
    public String[] contactFields {get; set;} 
    public Contact contact {get; set;}
    ...
}

<apex:repeat var"key" value="{!keys}">
    <apex:inputText value="{!wrapper.extras[key]}"/>
</apex:repeat>

But to get the full benefit of the metadata behind an SObject field (such as data type including parsing/formatting, picklist values, label, help text) it is best to directly use the SObject fields (as SObject also supports map-like access):

<apex:repeat var"f" value="{!contactFields}">
    <apex:inputField value="{!contact[f]}"/>
</apex:repeat>

And in Apex code there are string-based get/put methods available for any SObject too. So while you can't dynamically extend the wrapper class, you may be able to add code to it driven by data (such as lists of field names) that accomplishes the processing you require.

To illustrate how code can work with a varying number of fields (including fields added by a user) this code will look at every field on a Contact object instance c:

public void doSomething(Contact c) {

    for (String f : Contact.SObjectType.getDescribe().fields.getMap().keySet()) {
        Object o = c.get(f);
        if (o instanceof String) ...
        else if ...
    }
}

and there is also API to get details of a field in a DescribeFieldResult.

Best Answer

Related Solutions

[SalesForce] Dynamically expanding a wrapper class for an object as custom fields are added.

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