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POrails - InvalidAuthenticityToken for json/xml requests
 

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    <p>For some reason I'm getting an InvalidAuthenticityToken when making post requests to my application when using json or xml. My understanding is that rails should require an authenticity token only for html or js requests, and thus I shouldn't be encountering this error. The only solution I've found thus far is disabling protect_from_forgery for any action I'd like to access through the API, but this isn't ideal for obvious reasons. Thoughts?</p> <pre><code> def create respond_to do |format| format.html format.json{ render :json =&gt; Object.create(:user =&gt; @current_user, :foo =&gt; params[:foo], :bar =&gt; params[:bar]) } format.xml{ render :xml =&gt; Object.create(:user =&gt; @current_user, :foo =&gt; params[:foo], :bar =&gt; params[:bar]) } end end </code></pre> <p>and this is what I get in the logs whenever I pass a request to the action:</p> <pre><code> Processing FooController#create to json (for 127.0.0.1 at 2009-08-07 11:52:33) [POST] Parameters: {"foo"=&gt;"1", "api_key"=&gt;"44a895ca30e95a3206f961fcd56011d364dff78e", "bar"=&gt;"202"} ActionController::InvalidAuthenticityToken (ActionController::InvalidAuthenticityToken): thin (1.2.2) lib/thin/connection.rb:76:in `pre_process' thin (1.2.2) lib/thin/connection.rb:74:in `catch' thin (1.2.2) lib/thin/connection.rb:74:in `pre_process' thin (1.2.2) lib/thin/connection.rb:57:in `process' thin (1.2.2) lib/thin/connection.rb:42:in `receive_data' eventmachine (0.12.8) lib/eventmachine.rb:242:in `run_machine' eventmachine (0.12.8) lib/eventmachine.rb:242:in `run' thin (1.2.2) lib/thin/backends/base.rb:57:in `start' thin (1.2.2) lib/thin/server.rb:156:in `start' thin (1.2.2) lib/thin/controllers/controller.rb:80:in `start' thin (1.2.2) lib/thin/runner.rb:174:in `send' thin (1.2.2) lib/thin/runner.rb:174:in `run_command' thin (1.2.2) lib/thin/runner.rb:140:in `run!' thin (1.2.2) bin/thin:6 /opt/local/bin/thin:19:in `load' /opt/local/bin/thin:19 </code></pre>
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