On 07/02/11 14:22, Jiří Pavlovský wrote:
> Hi,
>
> I Have a block like below. It will produce the following output when
> included with the 'collapse' filter.:
>
> "- name1 , name2 , and name 3 en".
>
It's worth noting that the original problem was caused by a combination
of white space and newlines, and that there are a few different chomp
directives that can be used in these situations. Contiguous white space
is usually rendered as a single space by HTML, but sometimes, as in the
case of the space before the comma, all white space needs to be removed.
The following examples assume that the PRE_CHOMP and POST_CHOMP options
are turned off.
In this simplified example of the problem, there are a number of spaces
and newlines that end up appearing in the final HTML. The numbers in
asterisks denote the newlines:
<p>*1*
[% FOREACH author IN
['Larry Wall', 'Randal L. Schwartz', 'brian d foy', 'Tom Phoenix']
%]*2*
[% author %]*3*
[% UNLESS loop.last %]*4*
,*5*
[% END %]*6*
[% END %]*7*
</p>
This results in the following HTML:
<p>*1*
*2*
Larry Wall*3*
*4*
,*5*
*6*
*2*
Randal L. Schwartz*3*
*4*
,*5*
*6*
*2*
brian d foy*3*
*4*
,*5*
*6*
*2*
Tom Phoenix*3*
*6*
*7*
</p>
When rendered, the above HTML looks like this:
*1* *2* Larry Wall*3* *4* ,*5* *6* *2* Randal L. Schwartz*3* *4* ,*5*
*6* *2* brian d foy*3* *4* ,*5* *6* *2* Tom Phoenix*3* *6* *7*
The CHOMP_ONE options, which can be applied to an individual TT
directive by adding a hyphen (-), will remove any white space and a
single newline either before or after the directive:
Remove white space and a single newline before the directive:
[%- author %]
Remove white space and a single newline after the directive:
[% author -]
However, even liberal application of the CHOMP_ONE option doesn't
produce the right effect in the above example, where there is white
space and two newlines between the author and the comma:
<p>
[%- FOREACH author IN
['Larry Wall', 'Randal L. Schwartz', 'brian d foy', 'Tom Phoenix']
-%]
[%- author -%]
[%- UNLESS loop.last -%]
,
[%- END -%]
[%- END -%]
</p>
<p>Larry Wall ,Randal L. Schwartz ,brian d foy ,Tom Phoenix</p>
When rendered, the above HTML looks like this:
Larry Wall ,Randal L. Schwartz ,brian d foy ,Tom Phoenix
To resolve this, the CHOMP_COLLAPSE (=) and CHOMP_GREEDY (~) options can
be used. CHOMP_COLLAPSE changes all white space and newlines to a
single space. CHOMP_GREEDY removes all whitespace and newlines:
<p>
[%- FOREACH author IN
['Larry Wall', 'Randal L. Schwartz', 'brian d foy', 'Tom Phoenix']
~%]
[% author %]
[%~ UNLESS loop.last ~%]
,
[%= END %]
[%~ END -%]
</p>
<p>Larry Wall, Randal L. Schwartz, brian d foy, Tom Phoenix</p>
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