About mixing Database Query Builder with normal database library calls.

[Jan Schenkel]

--- Andre Garzia <soapdog at mac.com> wrote:
> Hi Folks,
> 
> I have a couple doubts that revGurus our there might
> clear. I am 
> creating a simple app to manage a couple MySQL
> tables. Its the common 
> tasks (insertion, modification, deletion), to
> navigate the database I 
> am using Database Query Builder, filling fields with
> the data and some 
> buttons to navigate. But I cannot use Query Builder
> to insert a Record 
> can I? How can I identify what is the current record
> (so that i can 
> disable the "previous" and "next" buttons when they
> reach the limits)?
> 
> Cheers
> Andre Alves Garzia  2003  BRAZIL
> http://www.soapdog.org
> 

Hi Andre,

You can execute any query (INSERT, DELETE, ...) on the
database an existing query connects to, by means of
the following command :
  revExecuteWithQuery <name of the existing query>,
                      <query to execute>

Example :
  put "UPDATE customers SET something=123456 ;" into \
      tSQLQuery
  revExecuteWithQuery "MyCustomerQuery", tSQLQuery

--

As for checking if the current record is the first or
last of the cursor corresponding to a query, use :
  revDBQueryIsBOF(<name of the query>
  revDBQueryIsEOF(<name of the query>

--

If you want to learn more of the hidden features of
the database query manager and its linked fields and
buttons :
- open the message box
- use the button at the top of the window to go the
Frontscripts section
- click on the checkbox "Show Revolution UI
frontscripts" to hilite it
- in the list above, you'll see a line 'revDatabase'
- double-click it, or select and click the 'Edit this
script' button at the bottom right

Note that it requires a good knowledge of the RevDB
commands and functions, and familiarity with the
message path and how frontScripts intervene.

Hope this helped,

Jan Schenkel.

=====
"As we grow older, we grow both wiser and more foolish at the same time."  (La Rochefoucauld)

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