Opensource.Platon.SK CVS: phpMyEdit/doc/sgml/configuration.fields.sgml - diff

Vyššie na [Platon] / phpMyEdit / doc / sgml

verzia 1.34, 2003/12/11 12:29:47

verzia 1.35, 2003/12/15 14:32:22

Riadok 1

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Riadok 800 $opts['fdd']['title']['sqlw'] = 'TRIM("$

</para>

<para>

The first example above makes <varname>surname</> uppercase when storing field

into database. The second one trims all whitespace characters around

<varname>title</> before writting it to database.

</para>

<para>

As a placeholder for the field's content, there are three variables available.

Riadok 819 than <varname>$val_as</varname> becomes

Riadok 826 than <varname>$val_as</varname> becomes

and <varname>$val_qas</varname> becomes

<constant>"some\"nice\"thing"</constant>. You have to use these variables

correctly in your <varname>['sqlw']</varname> expressions, otherwise MySQL

parsing error could be occured.

parsing error could be occured. We recommend you to use

<varname>$val_qas</varname> variable whenewer possible, as it is the most safe

one from the mentioned alternatives.

</para>

<para>

Very useful and favourite usage of <varname>['sqlw']</varname> option is to

explicitly tell &name; to store <constant>NULL</constant> value instead of

empty string for the particular column. Empty string and

<constant>NULL</constant> are two different values. Many people really does

not like empty strings in their tables, thus now they have possibility to

change them for <constant>NULL</constant> when user simply fills nothing into

form input field.

<title>Storing <constant>NULL</constant> instead of empty string</title>

<programlisting><![CDATA[

$opts['fdd']['col_name']['sqlw'] = 'IF($val_qas = "", NULL, $val_qas)'

]]></programlisting>

</example>

</para>

</sect1>


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