Mr eel
Camping: Adding Some Railsisms
I really love Camping. It’s packed full of magic and is just perfect for tiny projects. That said it can be a little obtuse at times and the documentation covers the API, but is a bit light-on when covering actual usage.
So, as a result I’ve spent a lot of time hacking about the code trying to figure things out. The upshot of this is a fair grasp of how the framework works. That means getting to extend it.
Camping.send(:include, SuperFunTime) => weeeeeee!
Now, Camping isn’t Rails. It doesn’t have the same philosophy, so I think it would be a mistake to try and make it into Rails. That said, there are some nice ideas that we can nick and use in our Camping apps.
I want a params hash. Camping has input, which is just a hash of parameters passed in via the query-string or a POST. Rails params however is a nested hash. Using the [] notation in your input names, you can have the parameters automatically nested for you:
patch[version], patch[name] => {'patch' => {'version' => value, 'name' => value}}
So, lets make our own version for our controllers!
module Railsisms
def params
return @params if @params
@params = @input.inject(Hash.new {|h, k| h[k] = {}}) do |hash, key_value|
if key_value[0].include?('[')
name = key_value[0].match(/(\w+)\[(\w+)\]/)
hash[name[1]][name[2]] = key_value[1]
else
hash[key_value[0]] = key_value[1]
end
hash
end
end
end
To use this you include it in your controllers. You can then access it by calling #params. The first time it’s hit parses the content of the @input attribute. Subsequent calls just return the hash.
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