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<p class="MsoNormal"><span style="color:#1F497D">Hi Matthias<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I am using global variables. In what way do they cause problems?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Is it expected behaviour for the Python logic to be used when the attribute table is opened?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I know what is causing the Python error. I am performing an intersect query to populate an attribute. When I open the attribute table the first feature in the attribute table is being passed to the Python form
object but it doesn’t include the geometry. This gives </span><span style="font-family:"Courier New,courier","serif"">AttributeError: 'NoneType' object has no attribute 'intersects'.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Courier New,courier","serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I have no need for any of the Python logic on opening of the attribute table, although I can see the advantage if it was open in form view.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Hope this makes sense, if you have any more details on the global variables I’d be grateful.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><br>
Tom<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:EN-GB">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:EN-GB">
Qgis-user [mailto:qgis-user-bounces@lists.osgeo.org] <b>On Behalf Of </b>Matthias Kuhn<br>
<b>Sent:</b> 03 May 2016 09:45<br>
<b>To:</b> qgis-user@lists.osgeo.org<br>
<b>Subject:</b> Re: [Qgis-user] Python form logic on attribute table open<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Tom,<br>
<br>
Are you using global variables? They often lead to troubles in this context.<br>
<br>
Matthias<o:p></o:p></p>
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<p class="MsoNormal">On 05/03/2016 10:42 AM, Thomas Colley wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I have a Python init function bound to an attribute form. This is working great using the identify tool to open a feature form but is throwing an error when I open the layer’s attribute table.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Is there any way I can check in the Python whether a feature form has been opened or the attribute table. I have no need for the logic when opening the attribute table.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I’ve found QgsAttributeEditorContext that looks like it might do the trick but I can’t work out how to access it.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Any advice would be appreciated.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><br>
Tom<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB"><br>
<br>
<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-GB"><br>
<br>
<o:p></o:p></span></p>
<pre>-- <o:p></o:p></pre>
<pre>Matthias Kuhn<o:p></o:p></pre>
<pre>OPENGIS.ch - <a href="https://www.opengis.ch">https://www.opengis.ch</a><o:p></o:p></pre>
<pre>Spatial • (Q)GIS • PostGIS • Open Source<o:p></o:p></pre>
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