Blogs / Jérôme Vieilledent / All you want to know about datatype development

All you want to know about datatype development

Sunday 03 October 2010 5:37:49 am

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By : Jérôme Vieilledent

If you needed once to develop a custom datatype in eZ Publish, you must know what pain it can be...

No official developer documentation is available and eZDataType class which must be overridden by your custom datatype really lacks of API doc (doxygen, phpdoc).

Searching the community portal a bit, you'll find a nice tutorial by Thomas Koch. This tutorial can be a good kickstart but it remains a bit complicated. Moreover, it doesn't cover all features offered by eZ Publish datatypes.

So, as I also needed to develop a new custom datatype for my Amazon extension, jvAmazonAdvertising, I decided to dissect this not-so-well-known datatype functionnality in order to write a new tutorial : Datatypes development : The definitive guide.

Stay tuned for updates ! ;-)

eZ debug

Timing: Jan 17 2025 23:41:33
Script start
Timing: Jan 17 2025 23:41:33
Module start 'content'
Timing: Jan 17 2025 23:41:33
Module end 'content'
Timing: Jan 17 2025 23:41:33
Script end

Main resources:

Total runtime0.1529 sec
Peak memory usage2,048.0000 KB
Database Queries141

Timing points:

CheckpointStart (sec)Duration (sec)Memory at start (KB)Memory used (KB)
Script start 0.00000.0058 587.9609180.8125
Module start 'content' 0.00580.0056 768.773499.2344
Module end 'content' 0.01140.1415 868.0078525.1563
Script end 0.1528  1,393.1641 

Time accumulators:

 Accumulator Duration (sec) Duration (%) Count Average (sec)
Ini load
Load cache0.00382.4648200.0002
Check MTime0.00140.9217200.0001
Mysql Total
Database connection0.00140.910510.0014
Mysqli_queries0.104068.02741410.0007
Looping result0.00130.88191390.0000
Template Total0.140992.210.1409
Template load0.00080.512110.0008
Template processing0.140191.669810.1401
Override
Cache load0.00050.347910.0005
Sytem overhead
Fetch class attribute can translate value0.00120.760110.0012
XML
Image XML parsing0.00030.217710.0003
General
dbfile0.00342.2098200.0002
String conversion0.00000.003430.0000
Note: percentages do not add up to 100% because some accumulators overlap

CSS/JS files loaded with "ezjscPacker" during request:

CacheTypePacklevelSourceFiles
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extension/community_design/design/suncana/stylesheets/tabs.css
extension/community_design/design/suncana/stylesheets/roadmap.css
extension/community_design/design/suncana/stylesheets/content.css
extension/community_design/design/suncana/stylesheets/star-rating.css
extension/community_design/design/suncana/stylesheets/syntax_and_custom_tags.css
extension/community_design/design/suncana/stylesheets/buttons.css
extension/community_design/design/suncana/stylesheets/tweetbox.css
extension/community_design/design/suncana/stylesheets/jquery.fancybox-1.3.4.css
extension/bcsmoothgallery/design/standard/stylesheets/magnific-popup.css
extension/sevenx/design/simple/stylesheets/star_rating.css
extension/sevenx/design/simple/stylesheets/libs/fontawesome/css/all.min.css
extension/sevenx/design/simple/stylesheets/main.v02.css
extension/sevenx/design/simple/stylesheets/main.v02.res.css
JS0extension/ezjscore/design/standard/lib/yui/3.17.2/build/yui/yui-min.js
extension/ezjscore/design/standard/javascript/jquery-3.7.0.min.js
extension/community_design/design/suncana/javascript/jquery.ui.core.min.js
extension/community_design/design/suncana/javascript/jquery.ui.widget.min.js
extension/community_design/design/suncana/javascript/jquery.easing.1.3.js
extension/community_design/design/suncana/javascript/jquery.ui.tabs.js
extension/community_design/design/suncana/javascript/jquery.hoverIntent.min.js
extension/community_design/design/suncana/javascript/jquery.popmenu.js
extension/community_design/design/suncana/javascript/jScrollPane.js
extension/community_design/design/suncana/javascript/jquery.mousewheel.js
extension/community_design/design/suncana/javascript/jquery.cycle.all.js
extension/sevenx/design/simple/javascript/jquery.scrollTo.js
extension/community_design/design/suncana/javascript/jquery.cookie.js
extension/community_design/design/suncana/javascript/ezstarrating_jquery.js
extension/community_design/design/suncana/javascript/jquery.initboxes.js
extension/community_design/design/suncana/javascript/app.js
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extension/community_design/design/suncana/javascript/ez.js
extension/community_design/design/suncana/javascript/ezshareevents.js
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Templates used to render the page:

UsageRequested templateTemplateTemplate loadedEditOverride
1pagelayout.tpl<No override>extension/sevenx/design/simple/templates/pagelayout.tplEdit templateOverride template
 Number of times templates used: 1
 Number of unique templates used: 1

Time used to render debug report: 0.0001 secs