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psql --version psql (PostgreSQL) 9.4.1 rails -v Rails 4.2.0 I added a jsonb column through migration like that
class AddPreferencesToUsers < ActiveRecord::Migration def change add_column :users, :preferences, :jsonb, null: false, default: '{}' add_index :users, :preferences, using: :gin end end I get this error :
PG::UndefinedObject: ERROR: type "jsonb" does not exist LINE 1: SELECT 'jsonb'::regtype::oid any help ?
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The JSONB data type stores JSON (JavaScript Object Notation) data as a binary representation of the JSONB value, which eliminates whitespace, duplicate keys, and key ordering. JSONB supports GIN indexes.
JSONB stands for “JSON Binary” or “JSON better” depending on whom you ask. It is a decomposed binary format to store JSON. JSONB supports indexing the JSON data, and is very efficient at parsing and querying the JSON data. In most cases, when you work with JSON in PostgreSQL, you should be using JSONB.
In general, most applications should prefer to store JSON data as jsonb , unless there are quite specialized needs, such as legacy assumptions about ordering of object keys. RFC 7159 specifies that JSON strings should be encoded in UTF8.
Hibernate dialectHibernate's PostgreSQL dialect does not support the JSONB datatype, and you need to register it.
After looking around I discovered that my postgresql version is not 9.4 by running the right command
postgres=# SHOW SERVER_VERSION; server_version ---------------- 9.1 So I had simply to upgrade my postgresql to 9.4.
By the way I followed this article to do the upgrading which I found very handy.
Now :
postgres=# SHOW SERVER_VERSION; server_version ---------------- 9.4.1 Hope this help someone in the same situation.
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