Hi All!
This is not directly related to Hobo, but it was so cool I just had to
pass it on.
I needed to transfer large amounts of data from multiple models to the
view's javascript. I was anticipating spending days, if not weeks,
generating the necessary code. One very lucky google search later, I
found the "gon" gem. This gem of a gem (I couldn't resist) takes data
from ruby (e.g., array of arrays of arrays, hashes containing arrays)
and translates it into a <script>....</script> containing the data in
javascript code.
In less than 20 minutes I had geographic data covering all of central
Florida and selected realestate listings moved from my db tables to the
view and processed by javascript code for display by google maps.
Just add
gem "gon" # Converts ruby objects to javascript objects in view !!!!!
to your Gemfile (followed by bundle install).
In the appropriate controller, setup the data then add:
gon.listings = listings # An array of
hashes containing arrays of hashes
gon.neighborhoods = neighborhoods # An array of arrays of arrays
gon.names = names # An array of strings
gon.nbh_id = nbh_id # An array of integers.
hobo_show # Plain old Hobo
Add to the view(s):
<%= include_gon %> <!-- might want to covert this to a dryml tag
but its so simple... -->
Finally, use the data in javascript files:
poly = new google.maps.Polygon(
{
name: gon.names[i],
nbh_id: gon.nbh_id[i],
strokeColor: "#000000",
strokeOpacity: 0.8,
strokeWeight: 1,
fillColor: "#000000",
fillOpacity: 0.0,
paths: gon.neighborhoods[i]
})
If this is useful to anyone, let me know. With sufficient interest I
might even add it as a recipe ;)
Don Ziesig
--
You received this message because you are subscribed to the Google Groups "Hobo
Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/hobousers.
For more options, visit https://groups.google.com/groups/opt_out.
