Improve csv output

[FlavBd]

Generate one csv file per exported layer and zip them for the user.

Before results.csv :

parcelle,,
,gid,529100
,id,14118000IB0072
,commune,14118
,prefixe,0
,section,IB
,numero,72
,contenance,36281
,created,2001-09-28
,updated,2015-03-26
,geometry,"MULTIPOLYGON ... "
,,
commune,,
,gid,245
,id,14118
,nom,CAEN
,created,2001-11-22
,updated,2018-04-19
,geometry,"MULTIPOLYGON ... "

After commune.csv :

gid;id;nom;created;updated;geometry
245;14118;CAEN;2001-11-22;2018-04-19;MULTIPOLYGON ...
302;14327;HEROUVILLE SAINT CLAIR;2002-11-28;2018-04-23;MULTIPOLYGON ...
335;14437;MONDEVILLE;2002-12-05;2016-11-17;MULTIPOLYGON ...

Fix qgis/qwc2-demo-app#194

[manisandro]

Thanks, I wonder whether it's better to make this an alternative format (like csv+zip), as people might already be relying on the current csv format.

[FlavBd]

Thanks for your advice.
Like I explain in this issue : qgis/qwc2-demo-app#198 I'm working on the possibility to choose through different format.
Here is an idea of the result.

For the moment the two possibilities are json and csv but I can add csv + zip like you suggest and keep the current csv format.

[FlavBd]

@manisandro what do you think about the suggestion to choose through different format and to have csv and csv + zip possibilities ? Can I continue in this way?

[manisandro]

Yes I'm ok with that, thanks.

[FlavBd]

@manisandro I made new commits about the csv export, don't hesitate to tell me if you want some modifications

[manisandro]

Thanks!