$Web Form Parm Line: Difference between revisions
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==Syntax== | ==Syntax== | ||
<p class="syntax">%string = $Web_Form_[Parm_]Line( fieldname, occurrence, line_num ) | <p class="syntax"><span class="term">%string</span> = $Web_Form_[Parm_]Line( <span class="term">fieldname, occurrence, line_num</span> ) | ||
</p> | </p> | ||
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<tr><th>fieldname</th> | <tr><th>fieldname</th> | ||
<td>The name of the form field, returned by <var>$Web_Form_Name</var>. Required argument if occurrence not specified, otherwise optional.</td></tr> | <td>The name of the form field, returned by <var>$Web_Form_Name</var>. Required argument if occurrence not specified, otherwise optional.</td></tr> | ||
<tr><th>occurrence</th> | <tr><th>occurrence</th> | ||
<td>The occurrence number of a form field, or the occurrence number of the form field matching 'fieldname', if fieldname is specified. Optional argument if fieldname is specified, otherwise it is required.</td></tr> | <td>The occurrence number of a form field, or the occurrence number of the form field matching 'fieldname', if fieldname is specified. Optional argument if fieldname is specified, otherwise it is required.</td></tr> | ||
<tr><th>line_num</th> | <tr><th>line_num</th> | ||
<td>Line number in the form field for which data is to be returned. This is an optional argument and defaults to 1. | <td>Line number in the form field for which data is to be returned. This is an optional argument and defaults to 1. | ||
Latest revision as of 22:33, 5 June 2013
Value of line in form field
$Web_Form_Parm_Line retrieves the value of a specific line in a form field. It is especially useful for textarea input fields. $Web_Form_Line is a short synonym for $Web_Form_Parm_Line.
$Web_Form_Parm_Line takes three arguments and returns a string, or null for any error condition.
Syntax
%string = $Web_Form_[Parm_]Line( fieldname, occurrence, line_num )
Syntax terms
| fieldname | The name of the form field, returned by $Web_Form_Name. Required argument if occurrence not specified, otherwise optional. |
|---|---|
| occurrence | The occurrence number of a form field, or the occurrence number of the form field matching 'fieldname', if fieldname is specified. Optional argument if fieldname is specified, otherwise it is required. |
| line_num | Line number in the form field for which data is to be returned. This is an optional argument and defaults to 1. |
Usage notes
- A line is considered to be a block of text that is terminated by either an ASCII carriage return (X'0D') or a carriage return followed by a line feed (X'0A'). This is what is ordinarily sent by a browser to mark the end of each line of a textarea input field.
Example
This example places each line of a textarea form field into an occurrence of a multiply occurring field.
FOR 1 RECORD IN ORDER_RECORD FOR %I FROM 1 TO $Web_Form_Parm_Num_Line'COMMENTS') %COMMENT = $Web_Form_Parm_Line('COMMENTS', , %I) ADD COMMENT = %COMMENT END FOR END FOR