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Understanding the Display Engine
updated by rck, 2004-11-15

Actually, one of the more powerful things in phpWebSite is the Display engine. A content management like phpWS does just that: It manages your content. I'll show you, how.

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Module Templates

Layouting your Template
template layout

Right now, module templates in phpWebSite are kind of a two sided sword. On the one hand, the idea is catchy. Control, wether you want to see meta info. Change the way, your content-classes are ordered.

Then reality struck us. The module template concept of phpws is bug ridden, module templates from the theme are only loaded the second time they are used. This renders the whole theme-based concept useless. And all the hacking you do in the module template directory will be void, as soon as you update your module to a newer version

Too bad, appstate doesn't think this problem to be important enough to be fixed. Then again, it seems to be rather hidden -- I've been trying to find it myself but couldn't. What I want to say: Take this page with a grain of salt and don't depend on it. Thank you.

Where to find them

The templates of a certain module are found in mod/modulename/templates, where modulename is replaced with the name of your module. If you want to change a template for a certain theme (which doesn't work properly as the time of this writing), you'd put the same files in theme/themename/templates/modname, where you replace themename and modname with the corresponding.

Oh, and if you change them. Please get rid of all the presentational markup and tables in them. You don't want to put bold, italics, table, font tags, inline style and similar in here. Your themes' flexibility is at stake. Use logical markup, like em, h and p. If you really need special formatting (think a bit about it), you can introduce your own div- and/or span-classes, which you of course define in the master css.

By the way: The currently used templates are, as far as I can tell, mostly useful as examples, on how not to do it. Most of phpWebSites layout problems (look at the phpWebSite homepage on a pda. With NetFront, for example. You can't use it. It's impossible. It won't accept any clicking on links, everything overlaps, etc. etc.) are in fact template problems. I've been working on that for weeks and still do.

To remain fair: Appstate currently focuses developement on templates as well. Let's wait and see how they turn out.
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  • Great article!

    Posted on 2004-11-13 05:11:11 By aDarkling[2]

    Very Informative!

    Possibly too informative, though. It might be better to break this down 3 articles, like:

    Understanding the Display Engine
    Effective CSS with phpWebsite
    Writing good HTML for phpWebsite

    because there's so much to cover, like the /images directory, how templating tags work, necessary tags for theme.tpl, what theme.php is, etc..

    I'd like to see examples of what the theme.tpl looks like, like when you suggested using 2 .css files, there should be an example of how they are used.

    I like the analogy you used for Box Styles.
    "default_pop.tpl" has been obsolete since (I think) 0.9.1, but noone ever got around to deleting it.

    I haven't played around with templates in months, but as for module templates from the theme being loaded the second time they are used, you may want to try turning the cache off. I think the templates may either be stored in the cache or in session memory.

    Good job!
    I look forward to seeing where this goes!

    [Reply ]

    • Article Breakup

      Posted on 2004-11-13 12:24:13 By rck[110]

      Very Informative!

      Possibly too informative, though. It might be better to break this down 3 articles, like:

      Understanding the Display Engine
      Effective CSS with phpWebsite
      Writing good HTML for phpWebsite

      In fact, this was meant to be a overview article about all aspects of the display engine of phpWebSite. I've already tried to point out the things on writing good HTML in my Semantic Web article, which didn't have the impact I had thought.

      I too see the need for guidance of good CSS and HTML generally, as well as taylored for phpWebSite and think about articles on that all the time. As soon as I know, how I can sum that up nicely, I will do it. Suggestions are always welcome of course

      [Reply ]

    • Examples

      Posted on 2004-11-13 12:26:24 By rck[110]

      I'd like to see examples of what the theme.tpl looks like, like when you suggested using 2 .css files, there should be an example of how they are used.

      Did you check out the Autumn theme already? It's a pretty good example of what I'm writing about. When you open it's theme.tpl, you'll see three css links (standard.css, colours.css and layout_screen.css) that are exactly doing what I describe in that article. That theme could be easily extended with, say, layout_handheld.css, layout_audible.css, whatever.

      As soon as I have an idea of the outline, I will go into that in more detail in it's own article. Until then: Feel free to discuss it right here!

      [Reply ]

    • Templates load only the second time

      Posted on 2004-11-13 12:30:15 By rck[110]

      changed On 2004-11-13 17:33:23 Edited By rck (reason: luck vs. look)

      I haven't played around with templates in months, but as for module templates from the theme being loaded the second time they are used, you may want to try turning the cache off. I think the templates may either be stored in the cache or in session memory.

      I've already turned off caching in the phpWebSite config. While it helps overall performance, it doesn't change this issue, as far as I can tell. Even if I do shift-reload pages in my browser (which in fact shouldn't be neccessary with the right http-headers), I still get the templates only the second time

      It must be some kind of caching issue, but I don't know where to look. Maybe appstate or someone else can gain some insight on this topic? I've read about people that have the same issue already, so I guess it should be reproducable.

      [Reply ]

    • Re: Great article!

      Posted on 2004-11-13 12:31:44 By rck[110]

      Very Informative!

      I like the analogy you used for Box Styles.

      Good job!
      I look forward to seeing where this goes!
      Thank you! It wouldn't be possible without your Article Manager... ;)

      [Reply ]

  • A Brave Step

    Posted on 2004-11-14 02:01:17 By Anonymous

    Good article, and probably the pilot of many more specific explanations. Well done and clears up a confusing area.

    quote
    I've already tried to point out the things on writing good HTML in my Semantic Web article, which didn't have the impact I had thought.
    unquote

    My opinion? There are many places pointing out good HTML etc but after unpacking phpws we tend to be more into getting the look together... if phpwebsite display/theming/customisation tutorials follow good practise we the flock will fall into line! You have the power - convert us!

    [Reply ]

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