[SalesForce] Salesforce Variable does not exist: String

Hey guys so I am trying to write an APEX function that checks if the users company name or department is blank then displaying two different types of strings depending if they are blank or not. However I am trying to define a variable and it keeps giving me this error:

Variable does not exist: String

This is the code for the APEX class:

public class bbGetInfoController {
public String getName() {
    return 'bbGetInfoController';
}

public String getDetails() {
    String result = null;
    if(String.isBlank(User.CompanyName) || String.isBlank(User.Department)) {
        result = 'You either have no company or department set!';
            } else {
                result = 'You work at {!$User.CompanyName} in the {!$User.Department} department.';
            }
    return result;
}

}

Best Answer

You're trying to call:

String.isBlank(SObjectField)

Which is not a valid function. You need to query your user first, then reference that instance:

public String getDetails() {
    User currrentUser = [SELECT CompanyName, Department FROM User WHERE Id = :UserInfo.getUserId()];
    if(String.isBlank(currentUser.CompanyName) || String.isBlank(currentUser.Department)) {
        result = 'You either have no company or department set!';
    } else {
        result = 'You work at '+currentUser.CompanyName+' in the '+currentUser.Department+' department.';
    }
    return result;
}

Fields can referenced as tokens using Object.Field, where Object is any object you can access (User, Account, etc), and Field is the API name of the field. This lets you reference fields dynamically.

See the SOBjectField class for more details on how field tokens work.

Note that {!mergefields} doesn't work in Apex Code, except in some limited instances (notably, using dynamic components with expressions). You generally want to use the + operator to concatenate strings.

Related Solutions

[SalesForce] Simple Apex class to return a list of strings

You can't instantiate a List like that using an integer. You don't need to explicitly specify how much items are going into the list when it is created. Instead, just remove the integer:

//Instantiate the list
String[] myArray = new List<String>();

You're logic in your loop seems to be incorrect as well. Specifically, myArray's size will always be 0 when you instantiate it. Change your loop logic to:

for(Integer i=0;i<length;i++) {
   // code
}

You want to generate a List of strings based on the i variable. You will want to change your internal logic to:

//Populate the array
myArray.add('Test ' + i);

// Write value to the debug log
System.debug(myArray[i]);

Finally, you want to return that Array. You need to change your method so the return type is no longer void by changing its signature:

public static String[] generateStringArray(Integer length)

then it is just a matter of returning that array at the end of your method:

return myArray;

This would bring it all together as:

public class StringArrayTest {
    //Public Method
    public static String[] generateStringArray(Integer length) {
        //Instantiate the list
        String[] myArray = new List<String>();

        //Iterate throught the list
        for(Integer i=0;i<length;i++) {
            //Populate the array
            myArray.add('Test ' + i);

            // Write value to the debug log
            System.debug(myArray[i]);
        } //end loop

        return myArray;
    }//end method       
}// end class

Some more info on Arrays and Lists, Loops, and Class methods for future reference.

[SalesForce] Stuck on a “Variable does not exist: String” error

You are passing a single string method as the second parameter to the string.format method. I think it is confusing the compiler into thinking you are looking for a variable called String.

Try:

private string getSecureUrl(
    String method,
    List<String> parameters) {
    String requestUrl = String.format('https://blargh.com/v2/{0}', new List<string>{method});

    return String.format(requestUrl, parameters);
}

Apex doesn't have the C# concept of params. So you need to explicitly put the into to List<String> or String[].

Best Answer

Related Solutions

[SalesForce] Simple Apex class to return a list of strings

[SalesForce] Stuck on a “Variable does not exist: String” error

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