using different key for to_json :methods
When using :methods
in to_json
, is there a way to rename the key? I'm trying to replace the real id with a base62 version of it, and I want the value of base62_id
to have the key :id
.
@obj.to_json(
:except => :id
:methods => :base62_id
)
I tried to do
@obj.to_json(
:except => :id
:methods => { :id => :base62_id }
)
but that didn't work.开发者_如何学JAVA
Any advice?
The to_json
serializer uses the name of the method as the key for serialization. So you can't use the methods
option for this.
Unfortunately to_json
method doesnt accept
block` parameter, otherwise you could have done something similar to
@obj.to_json(:except => :id) {|json| json.id = base62_id }
So that leaves us with a ugly hack such as:
def to_json(options={})
oid, self.id = self.id, self.base62_id(self.id)
super
ensure
self.id = oid
end
Now to_json
will return the expected result.
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