WTK

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====== Browse Box ======

One of the most common needs of any website is to list data.  The **wtkBuildDataBrowse** PHP function makes it extremely easy to do this.

As an example of the simplest use, these few lines create a fully functioning page by calling **wtkFillBrowsePage** which is a wrapper for both **wtkBuildDataBrowse** and **wtkMergePage**.

<code php>
<?php
$gloLoginRequired = false;
require('wtk/wtkLogin.php');

$pgSQL = 'SELECT `FirstName`, `LastName`, `City` FROM `wtkUsers`';
wtkFillBrowsePage($pgSQL);
?>
</code>

[[https://youtu.be/bSHjPLpMdiY|Full Tutorial Video]]

===== Add, Edit and Delete =====

This assumes you have `UID`, `id` or `GUID` in your SQL query because that value will be passed to the Edit or Delete page for determining which row to affect.  The library is smart enough to use whichever one you put in the SELECT query.  If your unique identifying column name is not one of these three, then to make the **wtkBuildDataBrowse** work properly you will need to alias it.  For example:

<code sql>
SELECT `pet_id` AS `UID`, `pet_name`
  FROM `pets`
</code>

To add an Edit button all you need to do is define where you want the Edit link to go in this variable: `$gloEditPage`.

With the WTK library, usually the Add page uses the same PHP page as the Edit page.  So although you can have the Add button go anywhere, most of the time you will define them as such:

<code php>
$gloEditPage = '/demo/petEdit';
$gloAddPage  = $gloEditPage;
</code>

==== Delete Button ====

To add a Delete button to your list, you simply put the table name.  If you are using the logic of having a `DelDate` column in your table and instead of truly DELETEing data, you set the `DelDate` to NOW(), then you can append after the table name "DelDate" and the WTK delete function will properly handle everything.

For example, in the `pets` demo table we use the `DelDate` logic so the delete functionality is defined as:

<code php>
$gloDelPage = 'petsDelDate'; // have DelDate at end if should DelDate instead of DELETE
</code>

==== More Buttons ====

If you want more buttons this is easily done by assigning them in the **$gloMoreButtons** PHP variable.  Similar to Edit and Delete buttons, this assumes you have `UID`, `id` or `GUID` in your SQL query because that value will be passed to the page for accessing.

These extra buttons will be put to the between the Edit button and the Delete button.

<code php>
$gloMoreButtons = array(
                'User Logins' => array(
                        'act' => '/admin/userLogins',
                        'img' => 'beenhere'
                    ),
                'User Updates' => array(
                        'act' => '/admin/userUpdates',
                        'img' => 'assignment'
                    ),
                'Send Invite' => array(
                        'act' => '/admin/sendInvite',
                        'img' => 'send'
                    ),
                'Send Password Reset' => array(
                        'act' => '/admin/sendResetPW',
                        'img' => 'send'
                    )
                );
</code>

In the above example, the 'User Logins' will be the hover-over title on the button.  The 'act' value defines the page which will be gone to.  For example, the 'User Logins' button will go to the userLogins.php page in the /admin/ folder.  The 'img' determines the MaterializeCSS icon which will be used.  In the 'User Logins' example the generated HTML code will be:

<code html>
<a onclick="JavaScript:ajaxGo('/admin/userLogins',0,7);"
   class="btn btn-floating btn-small"><i class="material-icons"
   alt="Click to User Logins" title="Click to User Logins">beenhere</i></a>
</code>

Here is how these actually look on the page:
{{::morebuttons.png?nolink&500|}}


==== Conditional Edit and Delete ====

If you want only some rows to have the Edit button, this can be done by defining a column and the conditional data required to be allowed to edit.

For example, if you only wanted to allow wtkUsers with a SecurityLevel of 80 to be allowed to edit, you would add these two lines before the call to **wtkBuildDataBrowse**.

<code php>
$gloEditCondCol     = 'SecurityLevel';
$gloEditCondition   = '80';
</code>

Likewise, you can set a condition on Delete button displaying by setting the following PHP variables.

<code php>
$gloDelCondCol     = 'SecurityLevel';
$gloDelCondition   = '90';
</code>

===== Printing Mode =====

If the page is in printing mode or the data is being exported, then the Add, Edit and Delete buttons will not be displayed.  This can be set by:

<code php>
$gloPrinting = true;
</code>
===== Column Alignment =====

All columns will be left justified by default.  To make a column center or right justified, just assign it in the PHP global variable like this:

<code php>
$gloColumnAlignArray = array (
    'Priority' => 'center',
    'Amount' => 'right'
);
</code>

===== Totaling Columns =====

Choosing which columns should be summed is easy also.  This only sums the values shown in the list.  So if your list is for 200 and your page navigation is set to 50, it will only show the first 50 rows and the total for the rows which are visible.

<code php>
$gloTotalArray = array (
    'OrderCount' => 'SUM'
    'TotalInvoiced' => 'DSUM'
);
</code>

Passing SUM tallies the numbers.  Using DSUM makes it so the sum at the bottom uses your chosen currency. The nubmer formatting and currency setting are defined by these two global variables which you set in the wtk/wtkServerInfo.php file. 

<code php>
$gloPHPLocale = 'en_US';  // determines number formatting
$gloCurrencyCode = 'USD'; // determines currency code in number formatting
</code>


===== Sorting Functionality =====

The **wtkSetHeaderSort** function can take 1, 2 or 3 parameters. Note, as usual spaces will be automatically be inserted for WordCaps or snake_case. For example, 'FirstName' will be changed to 'First Name'.

Note that in order for Sort Order to work, it requires the SELECT to have an ORDER BY.


==== One Parameter ====

PagesVisited

This uses column named `PagesVisited` and makes header as "Pages Visited" and sorts by this column.

==== Two Parameters ====

LookupDisplay, USA State

This uses column named `LookupDisplay` but shows the header as "USA State". It sorts by the `LookupDisplay` column.

==== Three Parameters ====

DOB, Birthday, u.`BirthDate`

This uses column named `DOB` but shows the header as "Birthday". It sorts using u.`BirthDate` column. This is really important when formatting causes problem with sort order. For example if your date format is '%b %D, %Y' then sorting by that would not give the results you want.

**Example**

Here is an example SQL query and the associated Sort Options.
<code sql>
SELECT p.`UID`, u.`FirstName` AS `Owner`, p.`PetName`, p.`City`,
  DATE_FORMAT(p.`BirthDate`,'%b %D, %Y') AS `DOB`
FROM `pets` p
  INNER JOIN `wtkUsers` u ON u.`UID` = p.`UserUID`
  INNER JOIN `wtkLookups` L ON L.`LookupType` = 'USAstate' AND 
</code>

**Sortable Columns**
Owner
City, Town
DOB, Birthday, p.`BirthDate` 


So for the above example, in the PHP you would simply add this before the wtkBuildDataBrowse call.

<code php>
wtkSetHeaderSort('Owner'); // Defaults column name but can change with second parameter
wtkSetHeaderSort('City', 'Town');
wtkSetHeaderSort('DOB', 'Birthday', 'p.`BirthDate`');
// when third parameter exists it is used for sorting of first parameter's column
</code>

===== Display UID Column =====

By default when you have your unique identifying column (UID, GUID, ID) in the SELECT statement, it will not be shown.  If you want it shown, you can simply set this variable to false.

<code php>
$gloHideUID = false;
</code>

===== Truncating =====

By default your result set will not be truncated.  However if you want each column truncated to 80 characters you can easily by setting this variable before calling **wtkBuildDataBrowse**:

<code php>
$gloBrowseTruncate = true;
</code>

===== Remove HTML  =====

You can set the follow variable and any HTML formatting will be removed from the SQL results before putting them into the browse list.  This uses the **wtkRemoveStyle** function which is defined in wtk/lib/Utils.php.

<code php>
$gloBrowseNoStyle = true;
</code>

===== NL2BR =====

If you want the SQL results to have <br> added in place of line breaks, set this PHP variable to true  before calling **wtkBuildDataBrowse**:

<code php>
$gloBrowseNL2BR = true;
</code>

===== Skip Footer =====

If you know the result set will be so few you will not need page navigation, you can choose to skip showing the footer.  For example, if there are only 9 rows returned, using **$gloSkipFooter** will prevent the bottom of your browse list from showing "1 - 9 of 9".

Simply before calling **wtkBuildDataBrowse** put in this line:

<code php>
$gloSkipFooter = true;
</code>

===== Rows per Page =====

By default your browse lists will show 20 rows of data.  If there are more rows, page navigation will automatically be added at the bottom allowing jumping to the end, or jumping 20 rows at a time.

This **20** can be globally changed by setting the following PHP variable in wtk/wtkServerInfo.php.  Of course if you want you can set this on any individual page to override the global default.

<code php>
$gloRowsPerPage = 30;
</code>

===== Custom HTML Row and Header =====

Usually you want the data returned in simple columns, and that is the default for wtkBuildDataBrowse.  If you need a custom HTML layout and Header, that is easily done.  Simply define those in these two PHP variables and wtkBuildDataBrowse will replace @ColumnNames@ with the data from the associated column.  For example, from the demo/listCustomRowHTM.php page you can see this code:

<code php>

$pgSQL =<<<SQLVAR
SELECT `UID`, DATE_FORMAT(`AddDate`, '$gloSqlDateTime') AS `Date`,
    CONCAT(`FilePath`, `NewFileName`) AS `WTKIMAGE`,
    CONCAT(`FirstName`, ' ', COALESCE(`LastName`,'')) AS `Name`,
    `Address`, `City`, `State`, `Zipcode`
  FROM `wtkUsers`
 WHERE `NewFileName` IS NOT NULL
ORDER BY `FirstName` ASC
SQLVAR;

$gloColHdr = '<th class="center">The WTK Demo List</th>';

$gloRowHtm =<<<htmVAR
<td><div class="row">
        <div class="col s5 center">
            @WTKIMAGE@
            <a class="btn" onclick="JavaScript:alert('My UID is @UID@ and my name is @Name@')">Click Me</a>
        </div>
        <div class="col s7">
            <h4>@Name@</h4><br>
            <p><em>added @Date@</em><br>
            @Address@<br>
            @City@, @State@ @Zipcode@</p>
        </div>
    </div>
</td>
htmVAR;

$pgHtm  = '<h4>Listing with Custom Row Template</h4>' . "\n";
$pgHtm .= wtkBuildDataBrowse($pgSQL);
</code>
===== wtkRowFunction =====

This feature is rarely needed but does give you amazing flexibility.  Definitely review the /demo/listRowFunction.php file to see it in action.

When you need complex rules and customization of HTML based on the data of a returned row, you can use the **wtkRowFunction** function.  Before calling **wtkBuildDataBrowse** define your wtkRowFunction function and call wtkSearchReplaceRow with first parameter of '@RunFunction@'.

Here is example code:

<code php>
// You define the next function in any way you like
function wtkRowFunction($fncHtmRow, $fncData){
    $fncNewRow = $fncHtmRow;
    if ($fncData['PetType'] == 'Dog'):
        $fncNewRow = wtkReplace($fncNewRow, '<tr id','<tr class="deep-purple lighten-3" id');
    endif;
    if ($fncData['CanTreat'] == 'CanTreatY'):
        $fncNewRow = wtkReplace($fncNewRow, 'CanTreatY','<i class="material-icons green-text">pets</i>');
    else:
        $fncNewRow = wtkReplace($fncNewRow, 'CanTreatN','<i class="material-icons red-text">pets</i>');
    endif;
    return $fncNewRow;
}

$pgSQL =<<<SQLVAR
SELECT p.`UID`, p.`PetName`, p.`City`,
    L.`LookupDisplay` AS `PetType`,
    CONCAT('CanTreat',p.`CanTreat`) AS `CanTreat`,
    `fncContactIcons`(p.`OwnerEmail`,p.`OwnerPhone`,p.`Latitude`,p.`Longitude`,'Y',p.`UID`,'Y','Y','') AS `OwnerContact`
  FROM `pets` p
   LEFT OUTER JOIN `wtkLookups` L ON L.`LookupType` = 'PetType' AND L.`LookupValue` = p.`PetType`
WHERE p.`DelDate` IS NULL
SQLVAR;

wtkSearchReplaceRow('@RunFunction@', ''); // second parameter not used for RunFunction
// above line is what triggers wtkRowFunction to be called for every row

$pgHtm .= wtkBuildDataBrowse($pgSQL);
</code>

Utilizing this, the wtkBuildDataBrowse function will call your **wtkRowFunction** function passing it the row of data that was retrieved and formatted.  Your function can modify the row HTML in any way and has full access to the data via the passed **$fncData[]** array.  Then you return the modified HTML which will be used in the browse list.

====== Demo Pages ======

We have several demos showing all the different functionality for the **wtkBuildDataBrowse** function which you will find is one of the most useful functions in the Wizard's Toolkit library.

The PHP demos have exact minimalist code examples of how easy it is to use the powerful feature of passing a SQL query to generate a full listing web page with all of the features listed above.

  * /demo/listDataMin.php - uses wtkFillBrowsePage
  * /demo/listCustomHTML.php - demo wtkFillBrowsePage with custom HTML template
  * /demo/listSortAligns.php - uses wtkSetHeaderSort
  * /demo/list3demo.php - 3 lists on one page
  * /demo/listWithImage.php - demo of WTKIMAGE feature
  * /demo/listRowFunction.php - demo wtkRowFunction for extreme flexibility
  * /demo/listCustomRowHTM.php - demo $gloColHdr and $gloRowHtm


====== WTK Page Builder ======

If you use the WTK Page Builder it will create a browse PHP page for you and have in the code comments all the main features. 

[[https://youtu.be/bSHjPLpMdiY|Full Tutorial Video]]