Re: [Qgis-user] QGIS - value relation widget

[Luca Lanteri]

I continue my work and I discover another problem.I have a 3 level nested
form (granparent-parent and child).
If I don't use global variables when I select a record in child to parent
and then one in parent, QGIS raise an error:

Traceback (most recent call last):
  File
"E:/lavori/Progetti_PIE/Convenzione_SISMICA/NomeComune_RP_v2.1.3_alpha1\indaginipun.py",
line 42, in
LedQtop.textChanged.connect(lambda: validaQuota(LedQtop))
NameError: free variable 'LedQtop' referenced before assignment in
enclosing scope

to avoid this error I have to declare some variable in my parent form but
then I have a minidump error when insert new records.

I'm in a "cul de sac". To hard for my weak python knowledge

thanks for all
Luca


2015-10-02 10:57 GMT+02:00 Luca Lanteri :

> Great Matthias,
>
> I remove all global variables and now it work fine !
>
> It remain just one problem, I add some code [0] connected with a button to
> insert a filename in a field.
> If use the button from single form all works fine but when I use it in
> from the parent-child form the code start  lot of times (it seems one time
> for every record in the table).
>
>
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Blumentrath, Stefan]

Thanks Matthias! Cool stuff!
There is happening so much with and around QGIS, it is hard keep up-to-date 
with the developers pace ...
I am definitely gonna use this one!

Cheers
Stefan

From: qgis-user-boun...@lists.osgeo.org 
[mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Matthias Kuhn
Sent: 2. oktober 2015 09:25
To: qgis-user@lists.osgeo.org
Subject: Re: [Qgis-user] QGIS - value relation widget

Hi Luca

Would this core functionality of QGIS be an option for you?

https://www.qgis.org/en/site/forusers/visualchangelog210/index.html#feature-filter-chaining-for-relation-reference-widget

If you are still required to use python in your forms: are you using global 
variables? They can be an issue for embedded forms.

Cheers,
Matthias
On 10/02/2015 09:09 AM, Luca Lanteri wrote:
Sadly, after further test I discover that the crashes remain, so I think it is 
a qgis bug and not a problem in my code.
The problem happens when I put my custom form into a subform widget 
(QgsRelationEditorWidget). If I add a new record in the subform and I move to 
another record using the left column QGIS crashes. It seems to be a more 
general problem because the crash appears also when I add some simple control 
that modify the object in the form.

I can open a ticket and add some test data.
If it is a minor bug and it could be resolved easily I really offer a pizza and 
a beer to resolve it.

All the best
Luca


2015-10-01 23:53 GMT+02:00 Luca Lanteri 
<mesca...@gmail.com<mailto:mesca...@gmail.com>>:
Hi,
now I'm already using the python logic but my code is terrible and I have a lot 
of crash problem.
Now that I using your example all is easier and seem to worsk fine.
I owe you one beer.
Many many tanks !

Luca

2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan 
<stefan.blumentr...@nina.no<mailto:stefan.blumentr...@nina.no>>:
Hi Luca,

Sounds like a case for Python logic!
General principles are explained here:
http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/

Also nice, and probably exactly what you are looking for:
http://medspx.fr/blog/Qgis/cascade_forms/

Cheers
Stefan

From: 
qgis-user-boun...@lists.osgeo.org<mailto:qgis-user-boun...@lists.osgeo.org> 
[mailto:qgis-user-boun...@lists.osgeo.org<mailto:qgis-user-boun...@lists.osgeo.org>]
 On Behalf Of Luca Lanteri
Sent: 1. oktober 2015 22:07
To: qgis-user <Qgis-user@lists.osgeo.org<mailto:Qgis-user@lists.osgeo.org>>
Subject: [Qgis-user] QGIS - value relation widget

Hi to all,

I need to build a form when the value of a combo are filtered basing on the 
value of anoter combobox.
I have a first combo where I choose the region and a second with the 
municipalities.
I need that the second combo shows only the municipalities of the choosed 
region.
I tried to use use the widget "relationship value" with the a filter like 
classe_munic = attribute($currentfeature, 'classe_munic') without any success.

Has anyone ever done something similar?
Thank in advance

Luca






___

Qgis-user mailing list

Qgis-user@lists.osgeo.org<mailto:Qgis-user@lists.osgeo.org>

http://lists.osgeo.org/mailman/listinfo/qgis-user

___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Luca Lanteri]

Great Matthias,

I remove all global variables and now it work fine !

It remain just one problem, I add some code [0] connected with a button to
insert a filename in a field.
If use the button from single form all works fine but when I use it in from
the parent-child form the code start  lot of times (it seems one time for
every record in the table).

[0]
def apriFile(QLine):
fileName=QLine.text()
try:
if os.path.isfile(fileName):

os.startfile(fileName)
else:
msgBox = QMessageBox()
msgBox.setText("Il file non esiste.")
msgBox.exec_()
except:
msgBox = QMessageBox()
msgBox.setText("Non riesco ad aprire il file.")
msgBox.exec_()

Thanks a lot and let me know how to send your beer.
;-)


2015-10-02 9:24 GMT+02:00 Matthias Kuhn <matth...@opengis.ch>:

> Hi Luca
>
> Would this core functionality of QGIS be an option for you?
>
>
> https://www.qgis.org/en/site/forusers/visualchangelog210/index.html#feature-filter-chaining-for-relation-reference-widget
>
> If you are still required to use python in your forms: are you using
> global variables? They can be an issue for embedded forms.
>
> Cheers,
> Matthias
>
>
> On 10/02/2015 09:09 AM, Luca Lanteri wrote:
>
> Sadly, after further test I discover that the crashes remain, so I think
> it is a qgis bug and not a problem in my code.
> The problem happens when I put my custom form into a subform widget
> (QgsRelationEditorWidget). If I add a new record in the subform and I move
> to another record using the left column QGIS crashes. It seems to be a more
> general problem because the crash appears also when I add some simple
> control that modify the object in the form.
>
> I can open a ticket and add some test data.
> If it is a minor bug and it could be resolved easily I really offer a
> pizza and a beer to resolve it.
>
> All the best
> Luca
>
>
> 2015-10-01 23:53 GMT+02:00 Luca Lanteri <mesca...@gmail.com>:
>
>> Hi,
>>
>> now I'm already using the python logic but my code is terrible and I have
>> a lot of crash problem.
>> Now that I using your example all is easier and seem to worsk fine.
>>
>> I owe you one beer.
>> Many many tanks !
>>
>> Luca
>>
>>
>> 2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan <
>> <stefan.blumentr...@nina.no>stefan.blumentr...@nina.no>:
>>
>>> Hi Luca,
>>>
>>>
>>>
>>> Sounds like a case for Python logic!
>>>
>>> General principles are explained here:
>>>
>>>
>>> http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/
>>>
>>>
>>>
>>> Also nice, and probably exactly what you are looking for:
>>>
>>> http://medspx.fr/blog/Qgis/cascade_forms/
>>>
>>>
>>>
>>> Cheers
>>>
>>> Stefan
>>>
>>>
>>>
>>> *From:* qgis-user-boun...@lists.osgeo.org [mailto:
>>> qgis-user-boun...@lists.osgeo.org] *On Behalf Of *Luca Lanteri
>>> *Sent:* 1. oktober 2015 22:07
>>> *To:* qgis-user < <Qgis-user@lists.osgeo.org>Qgis-user@lists.osgeo.org>
>>> *Subject:* [Qgis-user] QGIS - value relation widget
>>>
>>>
>>>
>>> Hi to all,
>>>
>>> I need to build a form when the value of a combo are filtered basing on
>>> the value of anoter combobox.
>>> I have a first combo where I choose the region and a second with the
>>> municipalities.
>>> I need that the second combo shows only the municipalities of the
>>> choosed region.
>>> I tried to use use the widget "relationship value" with the a filter
>>> like classe_munic = attribute($currentfeature, 'classe_munic') without any
>>> success.
>>>
>>> Has anyone ever done something similar?
>>> Thank in advance
>>>
>>>
>>> Luca
>>>
>>
>>
>
>
> ___
> Qgis-user mailing 
> listQgis-user@lists.osgeo.orghttp://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Luca Lanteri]

Sadly, after further test I discover that the crashes remain, so I think it
is a qgis bug and not a problem in my code.
The problem happens when I put my custom form into a subform widget
(QgsRelationEditorWidget). If I add a new record in the subform and I move
to another record using the left column QGIS crashes. It seems to be a more
general problem because the crash appears also when I add some simple
control that modify the object in the form.

I can open a ticket and add some test data.
If it is a minor bug and it could be resolved easily I really offer a pizza
and a beer to resolve it.

All the best
Luca


2015-10-01 23:53 GMT+02:00 Luca Lanteri <mesca...@gmail.com>:

> Hi,
>
> now I'm already using the python logic but my code is terrible and I have
> a lot of crash problem.
> Now that I using your example all is easier and seem to worsk fine.
>
> I owe you one beer.
> Many many tanks !
>
> Luca
>
>
> 2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan <stefan.blumentr...@nina.no
> >:
>
>> Hi Luca,
>>
>>
>>
>> Sounds like a case for Python logic!
>>
>> General principles are explained here:
>>
>>
>> http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/
>>
>>
>>
>> Also nice, and probably exactly what you are looking for:
>>
>> http://medspx.fr/blog/Qgis/cascade_forms/
>>
>>
>>
>> Cheers
>>
>> Stefan
>>
>>
>>
>> *From:* qgis-user-boun...@lists.osgeo.org [mailto:
>> qgis-user-boun...@lists.osgeo.org] *On Behalf Of *Luca Lanteri
>> *Sent:* 1. oktober 2015 22:07
>> *To:* qgis-user <Qgis-user@lists.osgeo.org>
>> *Subject:* [Qgis-user] QGIS - value relation widget
>>
>>
>>
>> Hi to all,
>>
>> I need to build a form when the value of a combo are filtered basing on
>> the value of anoter combobox.
>> I have a first combo where I choose the region and a second with the
>> municipalities.
>> I need that the second combo shows only the municipalities of the choosed
>> region.
>> I tried to use use the widget "relationship value" with the a filter like
>> classe_munic = attribute($currentfeature, 'classe_munic') without any
>> success.
>>
>> Has anyone ever done something similar?
>> Thank in advance
>>
>>
>> Luca
>>
>
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Matthias Kuhn]

Hi Luca

Would this core functionality of QGIS be an option for you?

https://www.qgis.org/en/site/forusers/visualchangelog210/index.html#feature-filter-chaining-for-relation-reference-widget

If you are still required to use python in your forms: are you using
global variables? They can be an issue for embedded forms.

Cheers,
Matthias

On 10/02/2015 09:09 AM, Luca Lanteri wrote:
> Sadly, after further test I discover that the crashes remain, so I
> think it is a qgis bug and not a problem in my code.
> The problem happens when I put my custom form into a subform widget
> (QgsRelationEditorWidget). If I add a new record in the subform and I
> move to another record using the left column QGIS crashes. It seems to
> be a more general problem because the crash appears also when I add
> some simple control that modify the object in the form.
>
> I can open a ticket and add some test data.
> If it is a minor bug and it could be resolved easily I really offer a
> pizza and a beer to resolve it.
>
> All the best
> Luca
>
>
> 2015-10-01 23:53 GMT+02:00 Luca Lanteri <mesca...@gmail.com
> <mailto:mesca...@gmail.com>>:
>
> Hi,
>
> now I'm already using the python logic but my code is terrible and
> I have a lot of crash problem.
> Now that I using your example all is easier and seem to worsk fine.
>
> I owe you one beer.
> Many many tanks !
>
> Luca
>
>
> 2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan
> <stefan.blumentr...@nina.no <mailto:stefan.blumentr...@nina.no>>:
>
> Hi Luca,
>
>  
>
> Sounds like a case for Python logic!
>
> General principles are explained here:
>
> 
> http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/
>
>  
>
> Also nice, and probably exactly what you are looking for:
>
> http://medspx.fr/blog/Qgis/cascade_forms/
>
>  
>
> Cheers
>
> Stefan
>
>  
>
> *From:*qgis-user-boun...@lists.osgeo.org
> <mailto:qgis-user-boun...@lists.osgeo.org>
> [mailto:qgis-user-boun...@lists.osgeo.org
> <mailto:qgis-user-boun...@lists.osgeo.org>] *On Behalf Of
> *Luca Lanteri
> *Sent:* 1. oktober 2015 22:07
> *To:* qgis-user <Qgis-user@lists.osgeo.org
> <mailto:Qgis-user@lists.osgeo.org>>
> *Subject:* [Qgis-user] QGIS - value relation widget
>
>  
>
> Hi to all,
>
> I need to build a form when the value of a combo are filtered
> basing on the value of anoter combobox.
> I have a first combo where I choose the region and a second
> with the municipalities.
> I need that the second combo shows only the municipalities of
> the choosed region.
> I tried to use use the widget "relationship value" with the a
> filter like classe_munic = attribute($currentfeature,
> 'classe_munic') without any success.
>
> Has anyone ever done something similar?
> Thank in advance
>
>
> Luca
>
>
>
>
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user



signature.asc
Description: OpenPGP digital signature
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Andreas Neumann]

Hi Matthias,

I was also thinking about that - but would it work also with normal 
value relation widgets instead of relation reference widgets?


The option to filter value relation lists, depending on the selection of 
other value relation widgets is probably a quite common request. Would 
be cool if this could be supported in QGIS core.


Andreas

On 02.10.2015 09:24, Matthias Kuhn wrote:

Hi Luca

Would this core functionality of QGIS be an option for you?

https://www.qgis.org/en/site/forusers/visualchangelog210/index.html#feature-filter-chaining-for-relation-reference-widget

If you are still required to use python in your forms: are you using 
global variables? They can be an issue for embedded forms.


Cheers,
Matthias

On 10/02/2015 09:09 AM, Luca Lanteri wrote:
Sadly, after further test I discover that the crashes remain, so I 
think it is a qgis bug and not a problem in my code.
The problem happens when I put my custom form into a subform widget 
(QgsRelationEditorWidget). If I add a new record in the subform and I 
move to another record using the left column QGIS crashes. It seems 
to be a more general problem because the crash appears also when I 
add some simple control that modify the object in the form.


I can open a ticket and add some test data.
If it is a minor bug and it could be resolved easily I really offer a 
pizza and a beer to resolve it.


All the best
Luca


2015-10-01 23:53 GMT+02:00 Luca Lanteri <mesca...@gmail.com 
<mailto:mesca...@gmail.com>>:


Hi,

now I'm already using the python logic but my code is terrible
and I have a lot of crash problem.
Now that I using your example all is easier and seem to worsk fine.

I owe you one beer.
Many many tanks !

Luca


2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan
<stefan.blumentr...@nina.no>:

Hi Luca,

Sounds like a case for Python logic!

General principles are explained here:


http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/

Also nice, and probably exactly what you are looking for:

http://medspx.fr/blog/Qgis/cascade_forms/

Cheers

Stefan

*From:*qgis-user-boun...@lists.osgeo.org
<mailto:qgis-user-boun...@lists.osgeo.org>
[mailto:qgis-user-boun...@lists.osgeo.org
<mailto:qgis-user-boun...@lists.osgeo.org>] *On Behalf Of
*Luca Lanteri
*Sent:* 1. oktober 2015 22:07
*To:* qgis-user <Qgis-user@lists.osgeo.org>
    *Subject:* [Qgis-user] QGIS - value relation widget

Hi to all,

I need to build a form when the value of a combo are filtered
basing on the value of anoter combobox.
I have a first combo where I choose the region and a second
with the municipalities.
I need that the second combo shows only the municipalities of
the choosed region.
I tried to use use the widget "relationship value" with the a
filter like classe_munic = attribute($currentfeature,
'classe_munic') without any success.

Has anyone ever done something similar?
Thank in advance


Luca





___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user




___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user


___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Blumentrath, Stefan]

Hi Luca,

Sounds like a case for Python logic!
General principles are explained here:
http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/

Also nice, and probably exactly what you are looking for:
http://medspx.fr/blog/Qgis/cascade_forms/

Cheers
Stefan

From: qgis-user-boun...@lists.osgeo.org 
[mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Luca Lanteri
Sent: 1. oktober 2015 22:07
To: qgis-user <Qgis-user@lists.osgeo.org>
Subject: [Qgis-user] QGIS - value relation widget

Hi to all,

I need to build a form when the value of a combo are filtered basing on the 
value of anoter combobox.
I have a first combo where I choose the region and a second with the 
municipalities.
I need that the second combo shows only the municipalities of the choosed 
region.
I tried to use use the widget "relationship value" with the a filter like 
classe_munic = attribute($currentfeature, 'classe_munic') without any success.

Has anyone ever done something similar?
Thank in advance

Luca
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

[Qgis-user] QGIS - value relation widget

[Luca Lanteri]

Hi to all,

I need to build a form when the value of a combo are filtered basing on the
value of anoter combobox.
I have a first combo where I choose the region and a second with the
municipalities.
I need that the second combo shows only the municipalities of the choosed
region.
I tried to use use the widget "relationship value" with the a filter like
classe_munic = attribute($currentfeature, 'classe_munic') without any success.


Has anyone ever done something similar?
Thank in advance

Luca
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user

Re: [Qgis-user] QGIS - value relation widget

[Luca Lanteri]

Hi,

now I'm already using the python logic but my code is terrible and I have a
lot of crash problem.
Now that I using your example all is easier and seem to worsk fine.

I owe you one beer.
Many many tanks !

Luca


2015-10-01 22:23 GMT+02:00 Blumentrath, Stefan <stefan.blumentr...@nina.no>:

> Hi Luca,
>
>
>
> Sounds like a case for Python logic!
>
> General principles are explained here:
>
>
> http://nathanw.net/2011/09/05/qgis-tips-custom-feature-forms-with-python-logic/
>
>
>
> Also nice, and probably exactly what you are looking for:
>
> http://medspx.fr/blog/Qgis/cascade_forms/
>
>
>
> Cheers
>
> Stefan
>
>
>
> *From:* qgis-user-boun...@lists.osgeo.org [mailto:
> qgis-user-boun...@lists.osgeo.org] *On Behalf Of *Luca Lanteri
> *Sent:* 1. oktober 2015 22:07
> *To:* qgis-user <Qgis-user@lists.osgeo.org>
> *Subject:* [Qgis-user] QGIS - value relation widget
>
>
>
> Hi to all,
>
> I need to build a form when the value of a combo are filtered basing on
> the value of anoter combobox.
> I have a first combo where I choose the region and a second with the
> municipalities.
> I need that the second combo shows only the municipalities of the choosed
> region.
> I tried to use use the widget "relationship value" with the a filter like
> classe_munic = attribute($currentfeature, 'classe_munic') without any
> success.
>
> Has anyone ever done something similar?
> Thank in advance
>
>
> Luca
>
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/qgis-user