Using biblatex with apa style and portuguesa language

Question

I'm trying to use apa style with biblatex but I get "Undefined control sequence." right after \printbibliography.

Here's the code:

\usepackage[main=portuguese]{babel}
\usepackage{csquotes}
\usepackage[style=apa]{biblatex} %apagar o de baixo
\DeclareLanguageMapping{portuguese}{portuguese-apa}

If I remove the option "style=apa" it works well.

I get this warning "File 'portuguese-apa.lbx' not found!(biblatex) Ignoring mapping 'portuguese' -> 'portuguese-apa'."

I think the error origins because of not finding the file.

Found these files: https://www.ctan.org/tex-archive/macros/latex/contrib/biblatex/latex/lbx.

But I don't know where to add the file.

I don't think that there is a portuguese-apa.lbx. Get e.g. spanish-apa.lbx (in the biblatex-apa-folder), make a copy as portuguese-apa.lbx, correct the words and then use this. — Ulrike Fischer, May 19 '16 at 15:34
I tried to find the biblatex folder on windows but I can't. I'm using Miktex. — user106052, May 19 '16 at 15:41
You need the biblatex-apa folder. Check your log-file, it should tell you were the files are. — Ulrike Fischer, May 19 '16 at 15:55
If you get a nice working .lbx, send it to me (APA style author) and I will include it with the style. — PLK, May 19 '16 at 15:57
Found the folder, added a new file named portuguese-apa.lbx. Still get the same error though.
Here's the file http://pastebin.com/KWYrDVZj — user106052, May 19 '16 at 16:36
@PLK I think this one works. Has more things translated than mine but I can still not get texmaker to find it. http://ftp.eq.uc.pt/software/TeX/macros/latex/contrib/biblatex/latex/lbx/portuguese.lbx — user106052, May 19 '16 at 16:44
Actually, that's the default biblatex .lbx. The APA .lbx would reference this, if it existed. — PLK, May 19 '16 at 17:00
@UlrikeFischer Do you want to write up an answer? I know we had something similar for normal biblatex already, but the question came up again and so an answer would be appreciated. — moewe, May 30 '16 at 16:12
@UlrikeFischer Sorry to bother you again. Do you want to write up an answer, or do you think the question is sufficiently similar to the one I mentioned above to close as a duplicate? — moewe, Jun 07 '16 at 06:39

score 2 · Answer 1 · edited Apr 13 '17 at 12:35

You shouldn't confuse lbx-files for biblatex and lbx-files for biblatex-apa. biblatex-apa needs some more translations and settings and so loads an additional lbx.

If for your language there is no lbx for biblatex you can follow the instructions in this question: What is the most appropriate way to configure biblatex for use with an unsupported language?

To create the additional lbx for biblatex-apa open one of the existing lbx in /tex/latex/biblatex-apa and save it as <yourlanguage>-apa.lbx in your document folder or in some local texmf-tree. Then adapt the various definitions.

If you think your definitions are useful sent them to the biblatex-apa author so that he can add them to the package https://github.com/plk/biblatex-apa.

Using biblatex with apa style and portuguesa language

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