NotImplementedError: MultiJsonParser has not implemented a parsing method for the :json format.

[maxdemarzi]

NotImplementedError: MultiJsonParser has not implemented a parsing method for the :json format.

[maxdemarzi]

Add one of the JSON gems to your project. Try OJ for example.

[bao1018]

I included OJ , but still met the same error; I am on Mac OS

require 'bundler/setup'
=> true
require 'neography'
=> true
require 'oj'
=> true
@neo = Neography::Rest.new
=> #Neography::Rest:0x007f84f3467358"}
def create_person(name)
@neo.create_node("name" => name)
end
=> nil
johnathan = create_person('Johnathan')

NotImplementedError: MultiJsonParser has not implemented a parsing method for the :json format.
from /Users/lychen/Documents/gitbase/EmergingTechRadar/vendor1,2/ruby/1.9.1/gems/neography-0.0.31/lib/neography/multi_json_parser.rb:13:in json' from /Users/lychen/Documents/gitbase/EmergingTechRadar/vendor1,2/ruby/1.9.1/gems/httparty-0.9.0/lib/httparty/parser.rb:140:inparse_supported_format'
...
from (irb):6:in create_person' from (irb):8 from /Users/lychen/.rvm/rubies/ruby-1.9.3-p194/bin/irb:16:in

'
1.9.3-p194 :009 >

[dgilliam]

Thanks Max,

I was able to make this work with OJ, however I know I'm going to have an issue in the future with other gems having a dependency on various json libraries besides OJ. Can you suggest a way to fix this more permanently?

[maxdemarzi]

Any of the JSON gems (yajl) should work. See the multijson documentation.

By the way, what did you have to do to get it to work?

[henry74]

Hi Max - I work with Drew. Basically if we start a fresh project and just include neography and oj in the gem file we can get past that error. If I add oj to an existing Gemfile where other gems which have dependencies directly on the json gem, it will automatically be loaded.

In a case like this, multi_json is supposed to have a pecking order and pick the oj engine first but we still get the error.

So it works in a project with only neography and oj in the Gemfile but in a larger project with dependencies on the json gem, it does not work.

We've even tried to require 'multi_json' specifically and did MultiJson.engine = :oj and it still didn't work.

Any ideas how we can get around this?

Thanks,
Henry

[maxdemarzi]

Can you email me the Gemfile for this project?

[henry74]

What's your email address? I don't see an easy way to find it from github or your website...

[maxdemarzi]

[email protected] I updated my site to make this easier to find.

[maxdemarzi]

Only thing I've found so far is http://www.hindoogle.com/blog/2011/09/httparty-0-8-0-with-multijson-throws-nameerror-constant-jsonparser-not-defined/

No luck figuring out what's wrong yet...

[maxdemarzi]

I think this particular issue was old multi_json dependencies from an old twitter gem. If anyone else runs into this, please ping me.

[henry74]

Looks like it has to do with the feedzilla gem with the following gem dependency chain:

feedzilla 0.1.3 depends on activesupport ~> 3.1.1, and activesupport ~> 3.1.1 depends on multi_json < 1.3

Ditching feedzilla for simple-rss addressed the issue.

[maxdemarzi]

Added dependencies to the gemfile.