HTML::Template how to use IF/Else in a LOOP

calabash has asked for the wisdom of the Perl Monks concerning the following question:

I want to use "TMPL_IF NAME=TC_Rst_OK" in a "TMPL_LOOP ", (I have set "loop_context_vars=>1"). My question is can I change the "$template->param(TC_Rst_OK)" dynamically. Like:

 
if(True){    
    $template->param(TC_Rst_OK=>0);
}else{
    $template->param(TC_Rst_OK=>0);
}
[download]

Sample.tmpl:

 
      <TMPL_LOOP NAME=TC_Loop>
      <tr>
          <td><TMPL_VAR NAME=TC_Num></td>
          <td><TMPL_VAR NAME=TC_Name></td>
        <TMPL_IF NAME=TC_Rst_OK>
              <td style="color:Blue"><TMPL_VAR NAME=TC_Rst></td>
        <TMPL_ELSE>
              <td style="color:Red"><TMPL_VAR NAME=TC_Rst></td>
        </TMPL_IF>
          <td><TMPL_VAR NAME=TC_Time></td>
          <td>Expand</td>
      </tr>
      </TMPL_LOOP>
[download]

Comment on HTML::Template how to use IF/Else in a LOOP Select or Download Code

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Re: HTML::Template how to use IF/Else in a LOOP by moritz (Cardinal) on Jan 20, 2011 at 20:50 UTC
By default, only variables from the loop itself are accessible inside the loop. So if you have `$tmpl->param(a => [ { b => 1}, { b => 2 }]);` [download] and a `<TMPL_LOOP VAR=a>`, then only the variable `b` is available within the loop, and no other variables, independently of other `param()` calls. You can change that by setting `global_vars => 1` in the constructor. Perl 6 - second systems done right	[reply] [d/l] [select]
Re^2: HTML::Template how to use IF/Else in a LOOP by tinita (Parson) on Jan 21, 2011 at 11:02 UTC
and since one might avoid globals vars also in templates (I do): you might try HTML::Template::Compiled, where you can activate global vars partly (see "global_vars" in the OPTIONS section) - it allows you to "navigate" up the data structure, so <TMPL_VAR ..foo> will get you the var foo directly one level above (and 3 dots will go two levels up and so on (notice also that one dot goes to the root level, and for that you don't even need to set global_vars)).	[reply]
Re: HTML::Template how to use IF/Else in a LOOP by calabash (Novice) on Jan 26, 2011 at 07:58 UTC
Thanks for the advices! Finally I solved my former request by adding another <TMPL_VAR> to describe color in the loop. So the color will be changed automatically for each case. `<TMPL_LOOP NAME=TC_Loop> <tr> <td><TMPL_VAR NAME=TC_Num></td> <td style="color:DarkSlateGray "><TMPL_VAR NAME=TC_Name></td> <td style=<TMPL_VAR NAME=TC_Rst_Color>><TMPL_VAR NAME=TC_Rst></td> <td style=<TMPL_VAR NAME=TC_Rst_Color>><TMPL_VAR NAME=TC_Time></td +> <td ><a href=<TMPL_VAR NAME=TC_Ref>>ExpandRef</a></td> </tr> </TMPL_LOOP>` [download]	[reply] [d/l]