Barbara - Thank you, that worked beautifully.
I remember reading somewhere, though, that allowing a template to call arbitrary methods (that is, methods other than bean-like getters) on classes was dangerous, and that support for it might be eliminated in a future version. Is this true, and if so, would it affect Map.get()?
- Keith Barbara Baughman wrote:
Try using a Map interface object like HashMap or TreeMap. HashMap<String, String> hm=new HashMap<String, String>(); hm.put("a","apple"); hm.put("b","blueberry"); ctx.put("map",hm); Then in Velocity: #foreach ($key in $map.keySet()) $key $map.get($key) #end Barbara Baughman X2157 On Wed, 7 Jun 2006, Keith R. Bennett wrote:What Velocity template code can I use to get a list of keys and iterate over that list, getting the value corresponding to each key? Here is what I've tried so far: Before calling Velocity, I place the list of keys plus each key/value pair in the context. For example: -- String [] letters = { "a", "b" }; context.put("letters", letters); context.put("a", "apple"); context.put("b", "blueberry"); -- In the template I have: -- $a $b #foreach ( $letter in $letters ) $letter ${${letter}} ## <-- This is the line in question #end -- However, the output is: -- apple blueberry a ${a} b ${b} -- The ${a} and ${b} above should be apple and blueberry instead. What can I use in the line in question to dereference the reference? Also, is there a better way of accomplishing my goal, which is this?: I have an app that will have database records of arbitrary type. The record metadata allows me to get the field names with which to populate the Velocity context. The record itself has, of course, the data. I want the Velocity template designer to be able to loop through the fields in the database record without knowing its format at design time, as in: #foreach ($fieldName in $field_names) <$fieldname> ... ## put the field's value here, as in my vain attempt above ## with ${${fieldname}} </$fieldname #end The data record is not a Java object with named field member variables, so I can't use the Java Bean approach. Perhaps I could create a class dynamically at runtime, but I expect this would be overkill. Thanks for any help you can offer. - Keith --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]--------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
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