Re: [SMARTY] Creating custom loop block function

On Fri, Dec 23, 2005 at 01:27:50PM +0200, Kaloyan Tsvetkov wrote:
> The problem is that the Smarty variable calls({$SKU}, or {$data.SKU}, or
> whatever is the propper Smarty syntax) from {cell}..{/cell} are not working.
> These {cell} tags are parsed only one time, and we can not put new values in
> them each time we need a new row parsed. These {cell} tags are parsed even
> before the first smarty_block_list() call - check the compiled version of
> the template for proof.

wrong. reread http://smarty.php.net/manual/en/plugins.block.functions.php
and maybe reread your compiled template.

> How Smarty works (correct me if I am wrong about something) - first it
> analyzes the template (smarty syntax), then it creates the compiled version
> of the template (php script in the smarty_compiled folder), then this
> compiled version is included and run. Running the included compiled version
> triggers the block functions that are declared in them.
> 
> When we use {section} or {foreach} (which are core Smarty plugins), Smarty
> adds special code in the compiled versions, which handle the access to data
> for each iteration loop. That's what we lack when we do our {row} block tag.

wrong. see above.
 
> On 12/23/05, messju mohr <[email protected]> wrote:
> >
> > On Fri, Dec 23, 2005 at 11:19:21AM +0200, Kaloyan Tsvetkov wrote:
> > > I need some help from someone who's got more experience than me with
> > > Smarty. I've been tasked to create a set of block functions for
> > > rendering tables. Here's what the syntax look like:
> > >
> > > ---proba.html---
> > >
> > >        {list data=$rows}
> > >
> > >                {head}
> > >                        {column}1{/column}
> > >                        {column}2{/column}
> > >                        {column}3{/column}
> > >                {/head}
> > >
> > >                {rows}
> > >                        {cell}
> > >                                0. {$SKU} {$data.SKU}
> > >                        {/cell}
> > >                        {cell} 0. {$brand} {$data.brand} {/cell}
> > >                        {cell} 0. {$model} {$data.model} {/cell}
> > >                {/rows}
> > >        {/list}
> > >
> > > ---end-of-file---
> > >
> > > The $rows data is somethink like that:
> > >
> > > ---proba.php---
> > > .....
> > >
> > > $smarty->assign('rows',
> > >        array(
> > >                array(
> > >                        SKU => 1,
> > >                        brand => 11,
> > >                        model => 11,
> > >                         ),
> > >
> > >                array(
> > >                        SKU => 2,
> > >                        brand => 22,
> > >                        model => 22,
> > >                        ),
> > >                )
> > >        );
> > >
> > > ....
> > > ---end-of-file---
> > >
> > > I need to make the smarty_block_rows() block function loop over the
> > > data in $rows. In the same time I need to access the elements (SKU,
> > > brand, model) on each loop. The HTML for the block components are read
> > > from an external file. If you want to take a look at the code, please
> > > follow this link: http://kaloyan.info/loop.zip.
> >
> >
> > you can access the data attribute from the {list} tag within the {row}
> > tags.
> > you have to search through $smarty->_tag_stack to find the enclosing
> > {list}:
> >
> >     for ($i = count($smarty->_tag_stack) - 1; $i >= 0; $i--) {
> >         $tag =& $smarty->_tag_stack[$i];
> >         if ($tag[0] == 'list') {
> >             $data = $tag[1]['data'];
> >             break;
> >         }
> >     }
> >
> > /* if $data is set here, then we found an enclosing {list} that has a
> > data attribute set */
> >
> >
> > then you have to loop yourself over the $data by setting $repeat at each
> > call to {row}
> >
> > /* we use the formerly unused $tag[2] to save the current row's count */
> >     if (!isset($tag[2])) {
> >         $tag[2] = 0;
> >     } else {
> >         $tag[2]++;
> >     }
> >     $i = $tag[2]; /* index of the current element */
> >
> >     if (isset($data[$i])) {
> >         /* there are rows left, we assign one
> >            this row will be used in the next iteration of the block
> > function */
> >         $smarty->assign('data', $data[$i]); /* if you want to acces
> > {$data.SKU} */
> >         $smarty->assign($data[$i]);         /* if you want to acces {$SKU}
> > */
> >         $repeat = true;
> >
> >     } else {
> >         /* we looped through $data and are done */
> >         $repeat = false;
> >
> >     }
> >
> > /* always return the block content's output unmodified
> >    it contains the last iteration's output.
> > */
> >     return $content;
> > }
> >
> >
> > HTH
> > messju
> >
> >
> > > Thanks in advance to all which will provide any help, comment or
> > > advice.
> > >
> > > K.
> >

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