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

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Diff for phpMyEdit/doc/sgml/configuration.fields.sgml between version 1.35 and 1.36

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

version 1.36, 2003/12/18 20:36:01

Line 1

<!-- Categories:

Line 777 $opts['fdd']['title']['sql'] = 'IF(TRIM(

</para>

<para>

First example appends content of <varname>firstname</> field to

The first example appends content of the <varname>firstname</> field to the

<varname>surname</> field. Because this is done on the database level, sorting

and searching (in table filtering page) on this field will properly work.

Similarly in the second example, the <varname>title2</> field will be used if

<varname>title</> field is empty. In this manner you can define some special

the <varname>title</> field is empty. In this manner you can define a special

static string, which should be printed in case a field is empty. Just

substitute a quoted string in place of <varname>title2</>.

Line 802 $opts['fdd']['title']['sqlw'] = 'TRIM("$

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.

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

</para>

<para>

Line 813 As a placeholder for the field's content

<member> -- value of the field</member>

<member> -- value with applied <function>addslashes()</function> function</member>

<member> -- value with <function>addslashes()</function> function applied</member>

<member> -- same as <varname>$val_as</varname> with quotes around</member>

</simplelist>

Line 821 As a placeholder for the field's content

</para>

<para>

So if the <varname>$val</varname> is <constant>some"nice"thing</constant>,

If the <varname>$val</varname> is <constant>some"nice"thing</constant>, then

than <varname>$val_as</varname> becomes <constant>some\"nice\"thing</constant>

<varname>$val_as</varname> becomes <constant>some\"nice\"thing</constant> and

and <varname>$val_qas</varname> becomes

<varname>$val_qas</varname> becomes <constant>"some\"nice\"thing"</constant>.

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

You have to use these variables correctly in your <varname>['sqlw']</varname>

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

expressions, otherwise a MySQL parsing error could occur. We recommend you use

parsing error could be occured. We recommend you to use

the <varname>$val_qas</varname> variable whenever possible, as it is the

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

safest one from the mentioned alternatives.

one from the mentioned alternatives.

</para>

<para>

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

A very useful and favourite usage of the <varname>['sqlw']</varname> option is

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

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

empty string for the particular column. Empty string and

of an empty string for the particular column. Empty string and

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

<constant>NULL</constant> are two different values. Many people really do not

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

like empty strings in their tables, thus now they have possibility to change

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

them to <constant>NULL</constant> when user simply enters nothing into form

form input field.

input field.

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

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