Using custom filter in filters metadata tag

[Jim Schmitz]

The documentation says I can "apply filters to specific posts or pages by using the filters metadata field", like so:

.. filters: filters.html_tidy_nowrap

I can get that to work, but how do I do it if is my own custom filter? I get the below error, which is the same error I get if set the filters field to nonsense. I believe the problem is my filter just isn't found by the code that runs the filters. How do I make it available?

PythonAction Error

Traceback (most recent call last):
  File "/home/jim/INSTALL/anaconda3/envs/py5/lib/python3.8/site-packages/doit/action.py", line 437, in execute
    returned_value = self.py_callable(*self.args, **kwargs)
  File "/home/jim/INSTALL/anaconda3/envs/py5/lib/python3.8/site-packages/nikola/utils.py", line 968, in unlessLink
    subprocess.check_call(action % target, shell=True)
TypeError: not all arguments converted during string formatting

Thanks!

[Roberto Alsina]

On Mon, Oct 19, 2020 at 6:11 PM Jim Schmitz <james....@gmail.com> wrote:

The documentation says I can "apply filters to specific posts or pages by using the filters metadata field", like so:

.. filters: filters.html_tidy_nowrap

I can get that to work, but how do I do it if is my own custom filter? I get the below error, which is the same error I get if set the filters field to nonsense. I believe the problem is my filter just isn't found by the code that runs the filters. How do I make it available?

Custom filters in metadata seem to be limited to external tools. So, for example, if you have a script called "upperify" that turns everything into upper case and want to use that:

.. filters: upperify %s

I will do a MR clarifying the documentation.

 

PythonAction Error

Traceback (most recent call last):
  File "/home/jim/INSTALL/anaconda3/envs/py5/lib/python3.8/site-packages/doit/action.py", line 437, in execute
    returned_value = self.py_callable(*self.args, **kwargs)
  File "/home/jim/INSTALL/anaconda3/envs/py5/lib/python3.8/site-packages/nikola/utils.py", line 968, in unlessLink
    subprocess.check_call(action % target, shell=True)
TypeError: not all arguments converted during string formatting

Thanks!

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[Roberto Alsina]

On Mon, Oct 19, 2020 at 6:23 PM Roberto Alsina <ral...@kde.org> wrote:

On Mon, Oct 19, 2020 at 6:11 PM Jim Schmitz <james....@gmail.com> wrote:

The documentation says I can "apply filters to specific posts or pages by using the filters metadata field", like so:

.. filters: filters.html_tidy_nowrap

I can get that to work, but how do I do it if is my own custom filter? I get the below error, which is the same error I get if set the filters field to nonsense. I believe the problem is my filter just isn't found by the code that runs the filters. How do I make it available?

Custom filters in metadata seem to be limited to external tools. So, for example, if you have a script called "upperify" that turns everything into upper case and want to use that:

.. filters: upperify %s

I will do a MR clarifying the documentation.

BTW: that program needs to modify the file in place.

[Jim Schmitz]

Roberto, thank you for your reply. Writing a script for the filter feature works well for my use case, and I was able to accomplish what I needed to accomplish.

To view this discussion on the web visit https://groups.google.com/d/msgid/nikola-discuss/CALXDAfq2Ewhktm%2BxZc%2BksbSyJ_eqQSDAckamfM%3Dwhb2jBq0ZYg%40mail.gmail.com.

[Roberto Alsina]

Good to hear!

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