Defining hyperlinks on objects in a DataWindow
The
Web DataWindow DTC can pass data in query strings to a target page.
You can use the Link To tab page in the Sybase Web DataWindow DTC
Properties dialog box to generate hyperlinks around headers and
labels, computed fields that are not calculated on the client, graphical
elements in a DataWindow, or read-only columns.
Setting links on columns
You can change a column to read-only by setting its tab order
to 0, its Protect property to 1, or its Edit.DisplayOnly property
to “yes”. Hyperlinks can also be set around text objects that use
DataWindow expressions to display data from database columns.
When you click in the Link To column next to a DataWindow
object, a browse (…) button displays to the right in the row that
you clicked. The browse button opens the Link Definition dialog
box, where you specify the target page for the link and the data
to bind to target page parameters.
Bind types
The types of values you can pass to the target page from a
DataWindow object are:
- Control Select this to pass the value of any control from the current
page to the target page. The initial value of the control is passed,
even if the control is editable at runtime. You can use a control
as a bind type in a 4GL Web page only. - Constant Use a constant when you know the value you want to pass to the
target page. Type the value directly in the Bind Value column of
the Link Definition dialog box. - Database column Use a database column when you want to pass data for a column
from the row a user clicks. You can bind column data to any DataWindow
object you select on the Link To tab. If you select a column (label)
as the DataWindow object link, the column value you bind is not restricted
to the column you selected for the link; you can pass data from another
column, such as a column that is not displayed. - DataWindow Expression Use a DataWindow expression to pass a value derived from retrieved
data for the DataWindow. - JavaScript Expression Use a script variable when you want to pass a value that
was calculated in a previously-run server script on the current page,
or that you can specify as an expression. The variable’s
value is not derived from the retrieved data for the DataWindow,
although it could refer to other data you have retrieved. You cannot
use a JavaScript expression as a bind type in a JSP target. - Page Parameter Use a page parameter when you want to pass on a
value that was passed to the current page, as is, to the target
page. The value is not derived from the retrieved data for the DataWindow. - Page Variable Use a page variable to pass on the value of a variable on the
current page. You can use a variable as a bind type in a 4GL Web
page only.
To link to parameters on other pages
-
Right-click on
a Web DataWindow DTC and select Sybase Web DataWindow DTC Properties. - Click the Link To tab.
-
Select a DataWindow object to link to (for example,
a header or a picture). -
Click under the Link To column for the object
you selected.An ellipsis button displays in the row where you clicked.
-
Click the ellipsis button.
The Link Definition dialog box displays.
-
Click the browse (…) button to open the Choose
URL dialog box, select a Web page or file to which you want to link,
and click OK.You return to the Link Definition dialog box. The name of
the target page displays in the URL box. Existing parameters on
the target page display under the Name column. You can type in additional
parameters, but you need to define them later on the target page. -
Select a bind type (for one of the target page
parameters) from the Bind Type drop-down list.The Bind Value drop-down list is automatically populated for
certain bind type selections. -
Select or type a value in the Bind Value drop-down
list and click OK.