fix json serializer nil exception (#79)

if hash was missing @context key the json serializer throwed a nil exception

Gemfile

@@ -35,5 +35,5 @@ group :development do
 end
 
 # NCBO gems (can be from a local dev path or from rubygems/git)
-gem 'goo', github: 'ontoportal-lirmm/goo', branch: 'development'
+gem 'goo', github: 'ontoportal-lirmm/goo', branch: 'master'
 gem 'sparql-client', github: 'ontoportal-lirmm/sparql-client', branch: 'master'

Gemfile.lock

@@ -1,7 +1,7 @@
 GIT
   remote: https://github.com/ontoportal-lirmm/goo.git
-  revision: 3d5bbe1db4a6aca2ff621ccfcdb85a32dbe9704e
-  branch: development
+  revision: bd7154217438c3b9160e0e9b495c7c718b55fbf8
+  branch: master
   specs:
     goo (0.0.2)
       addressable (~> 2.8)
@@ -32,27 +32,28 @@ GEM
       multi_json (~> 1.3)
       thread_safe (~> 0.1)
       tzinfo (~> 0.3.37)
-    addressable (2.8.1)
+    addressable (2.8.5)
       public_suffix (>= 2.0.2, < 6.0)
     ansi (1.5.0)
     ast (2.4.2)
-    bcrypt (3.1.18)
+    base64 (0.1.1)
+    bcrypt (3.1.19)
     builder (3.2.4)
     coderay (1.1.3)
-    concurrent-ruby (1.1.10)
-    connection_pool (2.3.0)
+    concurrent-ruby (1.2.2)
+    connection_pool (2.4.1)
     cube-ruby (0.0.3)
     daemons (1.4.1)
-    date (3.3.2)
+    date (3.3.3)
     docile (1.4.0)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
-    email_spec (2.2.1)
+    email_spec (2.2.2)
       htmlentities (~> 4.3.3)
       launchy (~> 2.1)
       mail (~> 2.7)
     eventmachine (1.2.7)
-    faraday (1.10.2)
+    faraday (1.10.3)
       faraday-em_http (~> 1.0)
       faraday-em_synchrony (~> 1.0)
       faraday-excon (~> 1.1)
@@ -85,32 +86,33 @@ GEM
       concurrent-ruby (~> 1.0)
     json (2.6.3)
     json_pure (2.6.3)
-    launchy (2.5.0)
-      addressable (~> 2.7)
+    language_server-protocol (3.17.0.3)
+    launchy (2.5.2)
+      addressable (~> 2.8)
     libxml-ruby (2.9.0)
     logger (1.5.3)
     macaddr (1.7.2)
       systemu (~> 2.6.5)
-    mail (2.8.0)
+    mail (2.8.1)
       mini_mime (>= 0.1.1)
       net-imap
       net-pop
       net-smtp
     method_source (1.0.0)
-    mime-types (3.4.1)
+    mime-types (3.5.1)
       mime-types-data (~> 3.2015)
-    mime-types-data (3.2022.0105)
-    mini_mime (1.1.2)
+    mime-types-data (3.2023.0808)
+    mini_mime (1.1.5)
     minitest (4.7.5)
     minitest-reporters (0.14.24)
       ansi
       builder
       minitest (>= 2.12, < 5.0)
       powerbar
     multi_json (1.15.0)
-    multipart-post (2.2.3)
+    multipart-post (2.3.0)
     net-http-persistent (2.9.4)
-    net-imap (0.3.2)
+    net-imap (0.3.7)
       date
       net-protocol
     net-pop (0.1.2)
@@ -123,53 +125,57 @@ GEM
     oj (2.18.5)
     omni_logger (0.1.4)
       logger
-    parallel (1.22.1)
-    parser (3.1.3.0)
+    parallel (1.23.0)
+    parser (3.2.2.3)
       ast (~> 2.4.1)
+      racc
     pony (1.13.1)
       mail (>= 2.0)
     powerbar (2.0.1)
       hashie (>= 1.1.0)
-    pry (0.14.1)
+    pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
-    public_suffix (5.0.1)
+    public_suffix (5.0.3)
+    racc (1.7.1)
     rack (1.6.13)
     rack-test (0.8.3)
       rack (>= 1.0, < 3)
     rainbow (3.1.1)
     rake (10.5.0)
     rdf (1.0.8)
       addressable (>= 2.2)
-    redis (5.0.5)
+    redis (5.0.7)
       redis-client (>= 0.9.0)
-    redis-client (0.11.2)
+    redis-client (0.17.0)
       connection_pool
-    regexp_parser (2.6.1)
+    regexp_parser (2.8.1)
     rest-client (2.1.0)
       http-accept (>= 1.7.0, < 2.0)
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.2.5)
+    rexml (3.2.6)
     rsolr (1.1.2)
       builder (>= 2.1.2)
-    rubocop (1.40.0)
+    rubocop (1.56.3)
+      base64 (~> 0.1.1)
       json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.1.2.1)
+      parser (>= 3.2.2.3)
       rainbow (>= 2.2.2, < 4.0)
       regexp_parser (>= 1.8, < 3.0)
       rexml (>= 3.2.5, < 4.0)
-      rubocop-ast (>= 1.23.0, < 2.0)
+      rubocop-ast (>= 1.28.1, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.24.0)
-      parser (>= 3.1.1.0)
-    ruby-progressbar (1.11.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.29.0)
+      parser (>= 3.2.1.0)
+    ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     rubyzip (1.3.0)
-    simplecov (0.21.2)
+    simplecov (0.22.0)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
       simplecov_json_formatter (~> 0.1)
@@ -181,17 +187,17 @@ GEM
     systemu (2.6.5)
     test-unit-minitest (0.9.1)
       minitest (~> 4.7)
-    thin (1.8.1)
+    thin (1.8.2)
       daemons (~> 1.0, >= 1.0.9)
       eventmachine (~> 1.0, >= 1.0.4)
       rack (>= 1, < 3)
     thread_safe (0.3.6)
-    timeout (0.3.1)
-    tzinfo (0.3.61)
+    timeout (0.4.0)
+    tzinfo (0.3.62)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.8.2)
-    unicode-display_width (2.3.0)
+    unicode-display_width (2.4.2)
     uuid (2.3.9)
       macaddr (~> 1.0)
 

lib/ontologies_linked_data/serializers/json.rb

@@ -27,7 +27,7 @@ def self.serialize(obj, options = {})
               hash["links"].merge!(generate_links_context(hashed_obj)) if generate_context?(options)
             end
           end
-          
+
           # Generate context
           if current_cls.ancestors.include?(Goo::Base::Resource) && !current_cls.embedded?
             if generate_context?(options)
@@ -40,7 +40,12 @@ def self.serialize(obj, options = {})
             context = {"@context" => context_hash}
             hash.merge!(context)
           end
-          hash['@context']['@language'] = options[:lang]
+
+          if hash.key?('@context')
+            hash['@context']['@language'] = options[:lang]
+          else
+            hash['@context'] = {'@language' => options[:lang]}
+          end
         end
         MultiJson.dump(hash)
       end