Class: Apartment::Adapters::PostgresqlSchemaAdapter

Inherits:
AbstractAdapter show all
Defined in:
lib/apartment/adapters/postgresql_adapter.rb

Overview

Separate Adapter for Postgresql when using schemas

Instance Method Summary collapse

Methods inherited from AbstractAdapter

#environmentify, #initialize, #process, #seed_data, #switch

Constructor Details

This class inherits a constructor from Apartment::Adapters::AbstractAdapter

Instance Method Details

#connect_to_new(database = nil) ⇒ Object

Set schema path or connect to new db



24
25
26
27
28
29
30
 
# File 'lib/apartment/adapters/postgresql_adapter.rb', line 24

def connect_to_new(database = nil)
    return reset if database.nil?
 		ActiveRecord::Base.connection.schema_search_path = database
 		
   rescue ActiveRecord::StatementInvalid => e
     raise SchemaNotFound, "The Schema #{database.inspect} cannot be found."
end

#create(database) ⇒ Object

Create a db schema



34
35
36
37
38
39
40
41
42
43
44
45
46
 
# File 'lib/apartment/adapters/postgresql_adapter.rb', line 34

def create(database)
ActiveRecord::Base.connection.execute("CREATE SCHEMA #{database}")

process(database) do
	import_database_schema

    # Seed data if appropriate
    seed_data if Apartment.seed_after_create
  			end
  			
  		rescue ActiveRecord::StatementInvalid => e
raise SchemaExists, "The schema #{database} already exists."
end

#current_database ⇒ Object

Get the current schema search path

@return {String} current schema search path



52
53
54
 
# File 'lib/apartment/adapters/postgresql_adapter.rb', line 52

def current_database
  ActiveRecord::Base.connection.schema_search_path
end

#process_excluded_models ⇒ Object

Set the table_name to always use the public namespace for excluded models



58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
 
# File 'lib/apartment/adapters/postgresql_adapter.rb', line 58

def process_excluded_models
  
 Apartment.excluded_models.each do |excluded_model|
    # Note that due to rails reloading, we now take string references to classes rather than
    # actual object references.  This way when we contantize, we always get the proper class reference
    if excluded_model.is_a? Class
      warn "[Deprecation Warning] Passing class references to excluded models is now deprecated, please use a string instead"
      excluded_model = excluded_model.name
    end
    
    excluded_model.constantize.tap do |klass|
      # some models (such as delayed_job) seem to load and cache their column names before this, 
      # so would never get the public prefix, so reset first
     klass.reset_column_information

      # Ensure that if a schema *was* set, we override
	    table_name = klass.table_name.split('.', 2).last

      # Not sure why, but Delayed::Job somehow ignores table_name_prefix...  so we'll just manually set table name instead
		klass.table_name = "public.#{table_name}"
end
  			end
end

#reset ⇒ Object

Reset schema search path to the default schema_search_path

@return {String} default schema search path



86
87
88
 
# File 'lib/apartment/adapters/postgresql_adapter.rb', line 86

def reset
	ActiveRecord::Base.connection.schema_search_path = @defaults[:schema_search_path]
end