Support for stripping whitespaces?

[lemonboston]

Hi,

Is there any way to strip whitespaces as in jinpa?:
http://jinja.pocoo.org/docs/2.9/templates/#whitespace-control

I have template containing lines like this:

{% if hasPrivacy %}{{ privacyKey }}: {{ privacy }}{% end %}
{% if hasStatus %}{{ statusKey }}: {{ status }}{% end %}
{% if hasUrl %}{{ url }}{% end %}

But even if the has* property is false an empty line is added and I need to avoid that.
I tried the - signs inside the if, end tags but I got exception.
Do you maybe have any tip how to solve this in other way?

Thanks

[codeka]

Currently there is not, but it's a reasonable request. Thanks!

[lemonboston]

Just for a possible alternative, based on @dmfs's suggestion we could solve omitting empty lines with

making sure the newline sequence is part of the if block

So to get something like this:

 <task title>
 ============

 <task description>

 [X] checked list item
 [ ] unchecked list item

 Location: <location>
 Start: <start date time> <timezone>
 Due: <due date time> <timezone>
 Completed: <due date time> <timezone>
 Priority: <priority text>
 Privacy: <privacy text>
 Status: <status text>
 <url>

 --
 Shared by OpenTasks

we have this template:

{{ title }}
============
{% if hasDescription %}
{{ description }}
{% end %}{% if hasCheckListItems %}{% for item in checkListItems %}
[{% if item.checked %}X{% else %} {% end %}] {{ item.text }}{% end %}
{% end %}{% if hasLocation %}
{{ locationKey }}: {{ location }}{% end %}{% if hasStart %}
{{ startKey }}: {{ startDateTime }} {{ timezone }}{% end %}{% if hasDue %}
{{ dueKey }}: {{ dueDateTime }} {{ timezone }}{% end %}{% if hasCompleted %}
{{ completedKey }}: {{ completedDateTime }} {{ timezone }}{% end %}{% if hasPriority %}
{{ priorityKey }}: {{ priority }}{% end %}{% if hasPrivacy %}
{{ privacyKey }}: {{ privacy }}{% end %}{% if hasStatus %}
{{ statusKey }}: {{ status }}{% end %}{% if hasUrl %}
{{ url }}{% end %}

--
{{footer}}

[criocere]

Personnally, I hadded a post treatment which remove all empty lines.

[dmfs]

@criocere that won't work if there are empty lines you want to retain

[MatiasDwek]

Any news on this feature?

[codeka]

I always found whitespace-stripping to be rather confusing from a user point of view, so I haven't really prioritized it, but if there's a lot of requests then maybe I can revisit adding it :)

[MatiasDwek]

Thank you for your quick answer.
Is there any way I can have a template without additional whitespaces and where flow control instructions are properly formatted, e.g. :

List of admins:
{% for admin in admins %}
{{ admin.id }} : {{ admin.name }}
{% else %}
You don't have any admin users.
{% end %}

List of users:
...

instead of:

List of admins: 
{% for admin in admins %}{{ admin.id }} : {{ admin.name }}{% else %}You don't have any admin users.{% end %}

List of users:
...

with the current release?

[codeka]

You should be able to do this with comment blocks instead:

{% for admin in admins %}{#
#}  {{ admin.id }} : {{ admin.name }}{#
#}{% else %}{#
#}  You don't have any admin users.{#
#}{% end %}

One advantage of this is you can control the exact whitespace, rather than just stripped everything (e.g. the leading whitespace above would be preserved between the #} and the text).

Another alternative is you can include the newlines in the tags themselves:

{% for admin in admins
%}{{ admin.id }} : {{ admin.name }}{%
   else
%}You don't have any admin users.{%
   end %}

[MatiasDwek]

Those are very good suggestions. The second option will just work perfectly for my needs.
Thank you very much.