Variable based on

Question

Hello everyone!
I'm just learning JSP right now so I hope I can explain my problem correctly. If i'm not making sense please let me know.
I have a table (FormFields) in my database that stores which fields should be displayed on my web form.
The table has a field called "FieldSource". This is in the format of: TableName.FieldName.
So now java gives me all the games in our system (with all fields related to the games). Then I want to go through all fields in each game and display only those fields that were specified in the database table.
Here's what I tried to do:
/////// go through each game
<c:forEach items="${games}" var="ITGame">
<tr>
//////// go through all the fields specific to this form
<c:forEach items="${formFields}" var="formField">
///////// here's my problem
<td>$${formField.fieldSource}</td>
</c:forEach>
</tr>
</c:forEach>
For example:
I have a field called "GameDate" for gameID 1.
In my FormField table I have a field specified (FieldSource=ITGame.GameDate).
Since "GameDate" is in the FormField table I want to display "GameDate" for each game from my list of games.
Can someone please point me in the right direction here?
Thank you for your time! Any help is greatly appreciated!
Best Regards,
Leena

Answer 1

You need to use the square brackets syntax.
In general, a.b gets evaluated as a["b"]
You can specify b="myProperty" evaluate a[b] = a["myProperty"]
In your case I think you want:
${ITGame[formField]}ie Object ITGame. Look up the property which is the value of formField.
Warning: if the game object does not have the property you are looking for it will throw an error.