Generic / variable reference to json array field name

Question

hi -- I have a javascript function that I want to make variable-based, so it can be used throughout my application.
It creates and parses a json object. I ultimately need to reference a field in that object. The field name is the name of database column
that was queried in the called application process.
For example, if the query executed was: select my_id from my_table where my_name = 'the_name', and the object that holds the parsed
AJAX response is jsonobj, then I need to reference: jsonobj.row[0].my_id
I don't want my_id to be hardcoded in the reference. Rather, I want to pass the string 'my_id' into the javascript function (let's call
the variable dest_item_name) and then reference (something like): jsonobj.row[0].<dest_item_name>.
(How) can I do this? Please tell me I can! :)
Thanks,
Carol

Answer 1

Hmmm, well, I thought I described my goal in the first post... but I'll try again.
hi -- I have a javascript function that I want to make variable-based, so it can be used throughout my application.
The function does this:
ajaxRequest = new htmldb_Get(null,&APP_ID.,'APPLICATION_PROCESS=LOOKUP_VALUE',0);
ajaxRequest.addParam('x01', source_item_value); -- equal to 'basin'; this is the value that will be used to lookup the value of dest_column_name
ajaxRequest.addParam('x02', source_column_name); -- equal to 'my_name'; this is the name of the database table column that will be = 'basin'
ajaxRequest.addParam('x03', dest_item_name); -- equal to P3_MY_ID; this is the name of the page item that will be set to the returned value
ajaxRequest.addParam('x04', dest_column_name); -- equal to 'my_id'; this is the name of the table column that gets queried
ajaxRequest.addParam('x05', lookup_table_name); -- my_data; this is the table to query
ajaxResponse = ajaxRequest.get();
if (ajaxResponse) {
var jsonobj= ajaxResponse.parseJSON();
$s(dest_item_name, jsonobj.row[0].my_id);
The goal of this javascript and application procedure is to have a generic method for looking up values
in the database. In the above example, I want to query my_data to get the value of my_id where my_name = 'basin'.
The application procedure LOOKUP_VALUE uses the x variables to construct that SQL query. For the above values, the
returned query is: select my_id from my_data where my_name = 'basin';
Then I set my dest_item_name (P3_MY_ID) to the value in the parsed json object. But as you can see, if I'm querying a different
table with different column names, the reference to jsonobj.row[0].my_id won't work, because the database column name
will be different. I've gotten around this by aliasing the queried field to RETURN_VALUE, so I'm just doing:
$s(dest_item_name, jsonobj.row[0].rerturn_value); -- which works great.
But my goal was to somehow be able to reference the variable dest_item_name (which is the name of the queried database
column) in my $s set statement.
Possible? If so, I'm sure it could come in handy at some point.
Thanks,
Carol