This is my first time serializing. I serialized an array of checkboxes w/ jQuery on the client side, put it into a hidden element, and submitted the form. Now on the server side I want to deserialize into an array I can use. Here is my string on the client side.
someArray%5B%5D=value0&someArray%5B%5D=value1
In Rails 3, I would like to get an array that looks like:
["value0", "value1"]
Thanks!
Rack will automatically parse these values if you submit them as typical post parameters to your request. For example:
curl http://yoursite.com -d "array[]=somevalue&array[]=othervalue"
This will then be available as params[:array] within your application, containing two elements with the values specified.
For serialization i came up with something and i've got working in production for a while. Lets say i've got a Car model with 3 different type of gadgets. (Lets assume i dont want 3 fields in DB):
in your database must be a field named gadgets as TEXT (ths is very important)
in Car.rb
serialize :gadgets
attr_accessible :alarm, :ac, :tires
ALARM = 0;
AC = 1;
TIRES = 2;
# this is the getter for alarm
def has_alarm
if self.gadgets.nil?
return 0
else
if self.gadgets[ALARM].nil?
return 0
else
return self.gadgets[ALARM]
end
end
# this is the setter for alarm
def has_alarm=(value)
self.gadgets = Array.new if self.gadgets.nil?
self.gadgets[ALARM] = value
end
# getter
def has_ac
if self.gadgets.nil?
return 0
else
if self.gadgets[AC].nil?
return 0
else
return self.gadgets[AC]
end
end
# setter
def has_ac=(value)
self.gadgets = Array.new if self.gadgets.nil?
self.gadgets[AC] = value
end
...
in your _form.rb
<%= f.check_box :has_alarm %> I want alarm in my car
<%= f.check_box :has_ac %> I want AC in my car
<%= f.check_box :has_tires %> I want deluxe tires in my car
I hope you dont have to search by these fields later...
