Hi Al,
You are probably right, but that is what would have taken me days or
weeks to figure out, implement and debug ;-) .
Don
On 08/18/2013 07:33 PM, Albert Chou wrote:
Not to be a wet blanket, but wouldn't gon = Struct.new(:listings,
:neighborhoods, :names, :nbh_id).new followed by populating gon and
then calling gon.to_json have worked?
Al
On Sun, Aug 18, 2013 at 8:15 AM, Donald Ziesig <[email protected]
<mailto:[email protected]>> wrote:
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
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