Geo-referencing content types in Plone with collective.geo

1. Geo-referencing content types in Plone with
collective.geo
Where is my
content?

2. Who am I?
I'm senior developer and project manager with Abstract since 2011
I have been working with Plone since 2007
During the last years I have gained experience with various Python web
development frameworks
Abstract
Where is my content? — Giorgio Borelli

3. Web maps: when, why and how
1. Complex and specialized GIS application
2. Maps are the central part of the app
Panoramio
Foursquare
Only-apartments
3. Geo-referenced CMS
Abstract
Where is my content? — Giorgio Borelli

4. What is collective.geo
collective.geo is a package that allows to geo-reference contents and to
display them on a map
http://plone.org/products/collective.geo
In 2008 I faced two problems
learning Plone 3 and the Zope component architecture
put a lot of contents on a map
Abstract
Where is my content? — Giorgio Borelli

5. What if c.geo was not there
Plone products Cons
Products.Maps 1. specific for Archetypes
Products.ATGoogleMaps 2. can only georeference points
redturtle.maps.core 3. can only use Google Maps
raptus.article.map 4. developed for a specific project
Abstract
Where is my content? — Giorgio Borelli

6. collective.geo manifesto
modular and easily extendable
up to date and taking advantage of ZCA
not related to a specific map service
Abstract
Where is my content? — Giorgio Borelli

7. Use cases

8. Use the location field
ENEA
We can use the location field
of a content-type to
geo-locate the offices of a
company
Archetypes
collective.geo
http://www.enea.it
Abstract
Where is my content? — Giorgio Borelli

9. Dexterity content types TTW
Tropical Data Hub
We can assign collective.geo
Maps behaviour to a
Dexterity content-type in
order to make it
geo-referenceable
Dexterity
collective.geo.behaviour
http://tropicaldatahub.org/
Abstract
Where is my content? — Giorgio Borelli

10. Not only points
IW:LEARN
c.geo allows to geo-reference
content with different shapes
Points
Lines
Polygons
http://iwlearn.net/
Abstract
Where is my content? — Giorgio Borelli

11. Flexitopic
We can aggregate
geo-referenced contents with
a Plone collection and, with
flexitopic, we can show the
results on a table and
paginate them
collective.flexitopic
c.geo.flexitopic
Abstract
Where is my content? — Giorgio Borelli

12. More customizations
AORIF
The modular structure of
collective.geo allows us to
customize it in a simple way
On saving a content we can
geolocate its address and show
it on a map. The user doesn't
need to know the coordinates
neither to use a complex UI.
Abstract
Where is my content? — Giorgio Borelli

13. Backend/frontend
We can use a different javascript
map services to display contents.
Google maps
Polymaps http://polymaps.org/
Leaflet
http://leaflet.cloudmade.com
Kartograph
http://kartograph.org
http://ferraraterraeacqua.it/
Abstract
Where is my content? — Giorgio Borelli

14. Plone.it - users' map
We can also view the portal
users in a specific map
With a portlet we can include the
map in a different context such
as a landing page.
collective.geo.usersmap
http://plone.it/partecipa
Abstract
Where is my content? — Giorgio Borelli

15. Looking for my content
Inside Plone when an object is geo-referenced an
event is fired by
collective.geo.index collective.geo.geographer
External catalogs <subscriber
handler=".MySubscriber"
SOLR for="IObjectGeoreferencedEvent"
/>
collective.solr
PostGIS
Abstract
Where is my content? — Giorgio Borelli

16. collective.geo under
the hood

17. The core of collective.geo
Dependencies Installation
Shapely [buildout]
extends = http://dist.plone.org/release
libgeos_c /4.2.1/versions.cfg
geopy eggs =
collective.geo.bundle
BeautifulSoup BeautifulSoup
...
Note: Shapely dependency will be removed in the next release
Abstract
Where is my content? — Giorgio Borelli

18. collective.geo structure
Abstract
Where is my content? — Giorgio Borelli

19. collective.geo.openlayers
Includes the javascript library Openlayers in Plone and some other
javascripts that are useful for managing maps in collective.geo
layer = new OpenLayers.Layer.Google(
'Google maps',
{
'sphericalMercator':true,
numZoomLevels:20
}
)
Abstract
Where is my content? — Giorgio Borelli

20. collective.geo.geographer
based on zgeo.geographer and >>> class Placemark(object):
... implements(
zgeo.plone.geographer ... IGeoreferenceable,
... IAttributeAnnotatable
provides the basic mechanism to ... )
enter geographic data into
>>> placemark = Placemark()
georeferenceable contents
>>> geo = IGeoreferenced(placemark)
>>> geo.setGeoInterface('Point',
any object can be georeferenced ... (-105.08, 40.59))
Abstract
Where is my content? — Giorgio Borelli

21. collective.geo.settings
store default settings for collective.geo
map center
zoom level
which layers have to be shown on the map
which contents can be georeferenced
default styles for all features
Abstract
Where is my content? — Giorgio Borelli

22. collective.geo.mapwidget
manages the mechanism that handles Openlayers maps in Plone
each map widget is a Zope component which contains a series of
layers
all the maps in collective.geo are composed by one or more map
layers and each layer returns a javascript snippet by a page template
which contains all information about the layer itself
Abstract
Where is my content? — Giorgio Borelli

23. collective.geo.mapwidget
>>> from collective.geo.mapwidget import maplayer
>>> class BingStretMapLayer(maplayer.MapLayer):
... name = u"bing_map"
... Title = _(u'Bing Streets')
... type = 'bing'
... jsfactory = """
... function() {
... return new OpenLayers.Layer.VirtualEarth('%s',
... {'type': VEMapStyle.Shaded,
... 'sphericalMercator': true});
... }""" % Title
<metal:layer
use-macro="context/@@collectivegeo-macros/map-widget" />

24. collective.geo.contentlocations
user interface for georeferencing Archetypes content types
data can be inserted in WKT
format
geocoding with geopy
it is possible to set
customized styles
Abstract
Where is my content? — Giorgio Borelli

25. collective.geo.kml
registers a kml view on the georeferenced objects and on folderish
contents such as Folders and Collections.
the KML file can be used on external services like Google Earth/Maps
Abstract
Where is my content? — Giorgio Borelli

26. Dexterity
collective.z3cform.mapwidget
it's a specific widget for z3c.form that allows to manage the
geographic data in an easy way
collective.geo.behaviour
it's a Dexterity behaviour that allows to georeference contents and
uses the annotations mechanism of collective.geo.geographer for
registering data
Abstract
Where is my content? — Giorgio Borelli

27. More extensions

28. collective.geo.mapcontent
Abstract
Where is my content? — Giorgio Borelli

29. collective.geo.file
it provides a view for KML, KMZ (Keyhole Markup Language) and GPX
(GPS eXchange Format) files.
The view renders the file in a openlayers Map using the collective.geo
library.
Abstract
Where is my content? — Giorgio Borelli

30. Conclusion
7 packages on the core (two more for Dexterity soon)
9 addons packages
translated in 9 languages
Coactivate http://www.coactivate.org/projects/collectivegeo
Readthedocs http://collectivegeo.readthedocs.org
Abstract
Where is my content? — Giorgio Borelli

31. Contributors
Sean Gillies Christian Ledermann - nan
Silvio Tomatis - silviot David Beitey - davidjb
Gerhard Weis - gweis Maurizio Delmonte - miziodel
David Breitkreutz - rockdj Alice Narduzzo
Makina corpus Enrico Barra
Abstract
Where is my content? — Giorgio Borelli