[QGIS-Developer] How to transfer data between QGIS Python plugins?
Tobias Schmetzer
tschmetzer at gmx.de
Thu Apr 22 14:43:31 PDT 2021
Hello Zac,
I just saw you were helped and I'm happy the functionality solved your problem!
If you feel there's a lack of documentation and you've got an idea how to improve it I think the best thing to do is to support this documentation with a contribution. This is how I started when I realised something was missing and I suggested to add this or that bit of information.
It's easy to sign up on GitHub and make a suggestion. You can't damage anything. Everything will get reviewed and maybe discussed. There's also guidelines in the docs how to contribute.
Best regards, Tobias
22.04.2021 14:09:30 Zac Wang <zacwang15 at gmail.com>:
> Hi guys,
>
> Thank you for all your replies.
>
> 'qgis.utils.plugins' really resolves my problem.
>
> This issue obsessed me for a few days, and your advice is fantastic.
>
> I can't understand why there is no documentation for such a useful functionality.
>
> Anyway, thank you for your help. Appreciate it.
>
>
> Cheers,
>
> Zac
>
>
> On Thu, 22 Apr 2021 at 22:01, Raymond Nijssen <r.nijssen at terglobo.nl> wrote:
>> Hi Zac,
>>
>> You can use:
>>
>> qgis.utils.plugins
>>
>> to get a dictionary with all active plugins.
>>
>>
>>
>> To find out if another plugin is available:
>>
>> 'processing' in qgis.utils.plugins
>>
>>
>>
>> And use it like:
>>
>> processing_pl = qgis.utils.plugins['processing']
>> processing_pl.toolbox.searchBox.setText('overlay')
>>
>>
>> Hope this helps,
>>
>> Raymond
>>
>>
>> On 22-04-2021 13:07, Zac Wang wrote:
>>> Hi all,
>>>
>>> Are there some ways to transfer data between different pyqgis plugins? I
>>> hope plugins share state.
>>>
>>> The only way I found is to make pluginA to be a child component of
>>> QgisApp(iface.mainWindow()).
>>>
>>> Then in another pluginB, call findChild() to get the object(pluginA) and
>>> connect its signal.
>>>
>>> This is a possible solution, but it's not easy to maintain because
>>> plugins are not initiated in the same file.
>>>
>>> Is there a better solution?
>>>
>>> Regards,
>>>
>>> Zac
>>>
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