[Qgis-user] Ho retrieve the attributealias list

[Andrea Peri]

Hi,

I resolved !


The solution was:

                for idx, fld in enumerate(layer.dataProvider().fields()):

and after in the code retrieve the alias (or the fieldname) using:

                layer.attributeDisplayName(idx)

and the real name of the field using:

                fld.name()

Thx for help.


2015-11-02 16:32 GMT+01:00 Andrea Peri <aperi2007 at gmail.com>:
> Hi,
>
> yes , my goal was to retrieve the aliases.
>
> To reach this information I plan to use this function:
>
>             fldDescr = fld.attributeDisplayName()
>
> The attributeAlias give me the aliases when availables, but when they
> are not filled it return a null (or empty) string.
> Instead the attributeDisplayName() return the Alias or the original FieldName.
>
> A.
>
>
> 2015-11-02 15:28 GMT+01:00 Matthias Kuhn <matthias at opengis.ch>:
>> Hi
>>
>> layer.attributeList() works for me, I really don't know what goes wrong
>> there for you. But it's a quite silly functions since the attribute
>> indexes were changed to always be sequential. Now it just delivers a
>> list each numbers from 0..count-1. So your enumerate will allways give
>> you [(0,0)..(n-1, n-1)].
>>
>> That said, what you probably want to use is layer.attributeAliases().
>> That gives you a mapping of field names to aliases.
>> Or [(idx, layer.attributeAlias(idx)) for idx in
>> range(layer.fields().count())] if you really want to use the field indexes.
>>
>> Best,
>> Matthias
>>
>> On 11/02/2015 02:28 PM, Andrea Peri wrote:
>>> Hi,
>>>
>>> I need to retrieve a list of attribute alias.
>>> To do this, I try this code:
>>>
>>> for lid, orientation in self.templateTable.model().getObjectIter():
>>>    layer = QgsMapLayerRegistry.instance().mapLayer(lid)
>>>        for idx, fld in enumerate(layer.attributeList()):
>>> ...
>>>
>>> The qgis report me this error:
>>>
>>>     for idx, fld in enumerate(layer.attributeList()):
>>> AttributeError: 'QgsVectorLayer' object has no attribute 'attributeList'
>>>
>>> But I see the AttributeList is available in that clas as reported from the
>>> help.
>>>
>>> http://www.qgis.org/api/classQgsVectorLayer.html#a9fdee4a58551d7e1424c8f66ab6c14a0
>>>
>>> Perhaps I'm wrong something or the documentation API is obsolete ?
>>>
>>> Thx.
>>>
>>>
>>>
>>
>>
>>
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>
>
>
> --
> -----------------
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -----------------



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Andrea Peri
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qwerty àèìòù
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