[GRASS-user] R: exwcuting grass python script from php web page

[roberta fagandini]

Hi Moritz,

Hi Roberta,

I'm really no expert in this domain, so just doing some educated guessing.

On 28/09/20 18:37, roberta fagandini wrote:
>
> On 28/09/20 17:51, roberta fagandini wrote:
>> Sorry, maybe I didn't explain myself well because actually, I don't get
>> any error from the php web page, simply the code related to grass is not
>> executed.For instance gsetup.init(gisbase, gisdb, location, mapset) does
>> not create any file in my /tmp/ folder and the print(gscript.gisenv())
>> is not printed.
>> I checked the import of the grass libraries (print(sys.modules)) and
>> they seem to be correctly imported.
>
> Have you checked your webservers error logs ?
>
> I have already checked and this is the error in the webserver log file
>
> File "importgrass.py", line 82, in <module>
>      main()
>    File "importgrass.py", line 71, in main
>      rcfile = gsetup.init(gisbase, gisdb, location, mapset)
>    File "/usr/lib/grass74/etc/python/grass/script/setup.py", line 170,
> in init
>      config_dir = os.path.join(os.getenv('HOME'), config_dirname)
>    File "/usr/lib/python3.6/posixpath.py", line 80, in join
>      a = os.fspath(a)
> TypeError: expected str, bytes or os.PathLike object, not NoneType

First of all, the importgrass.py you sent only has 72 lines, so I don't
know what the line 82 reference in your above error points to.

This is simply due to some print that I added to the code before checking the error log.

But most importantly, I would really recommend that you upgrade to a
newer version of GRASS GIS. Current stable is 7.8. There's been a lot of
improvement in terms of python3 compatibility and maybe this is an issue
that has already been resolved.

It sounds like an issue with a variable containing a path. Apparently it
is of type NoneType...

I tried to upgrade GRASS using the repository ubuntugis unstable but it caused some problems with the installation of postgis. Do you have another solution?


>
> How do you call the python script from PhP?
>
> I tried  both with:
> <?php
>         $command = escapeshellcmd('/usr/bin/python3 importgrass.py ');
>          echo exec($command, $output, $return);
> ?>
>
> and
>
> <?php
>         $command = escapeshellcmd('/usr/bin/python3 importgrass.py ');
>          echo system($command, $return);
> ?>
>
> and
>
> <?php
>         $intestazione='#!/bin/bash'.PHP_EOL;
>         $command = escapeshellcmd('/usr/bin/python3 importgrass.py ');
>         $myfile = fopen("./tmp/script.sh", "w") or die("Unable to open
> file!");
>         fwrite($myfile, $intestazione);
>         fwrite($myfile, $command);
>         fclose($myfile);
>         echo exec("/bin/sh ./tmp/script.sh", $output, $return);
>         print_r($output);
> ?>
>

What happens when you replace '/usr/bin/python3 importgrass.py ' by, for
example '/usr/bin/grass --version', just to check if other executables
work ?

I tried to run '/usr/bin/grass --version' but I got a similar error:

File "/usr/bin/grass", line 2005, in <module>
    main()
  File "/usr/bin/grass", line 1804, in main
    grass_config_dir = get_grass_config_dir()
  File "/usr/bin/grass", line 398, in get_grass_config_dir
    directory = os.path.join(os.getenv('HOME'), grass_config_dirname)
  File "/usr/lib/python2.7/posixpath.py", line 70, in join
    elif path == '' or path.endswith('/'):
AttributeError: 'NoneType' object has no attribute 'endswith'

Moritz

Thanks again!
Roberta
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20200930/df928011/attachment-0001.html>