Module: Sequel::Plugins::CsvSerializer::ClassMethods

Defined in:
lib/sequel/plugins/csv_serializer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#csv_serializer_opts ⇒ Object (readonly)

The default opts to use when serializing model objects to CSV



94
95
96
 
# File 'lib/sequel/plugins/csv_serializer.rb', line 94

def csv_serializer_opts
  @csv_serializer_opts
end

Instance Method Details

#array_from_csv(csv, opts = OPTS) ⇒ Object

Attempt to parse an array of instances from the given CSV string



97
98
99
100
101
102
103
 
# File 'lib/sequel/plugins/csv_serializer.rb', line 97

def array_from_csv(csv, opts = OPTS)
  CsvSerializer.csv_call(:parse, csv, process_csv_serializer_opts(opts)).map do |row|
    row = row.to_hash
    row.delete(nil)
    new(row)
  end
end

#freeze ⇒ Object

Freeze csv serializier opts when freezing model class



106
107
108
109
110
111
112
 
# File 'lib/sequel/plugins/csv_serializer.rb', line 106

def freeze
  @csv_serializer_opts.freeze.each_value do |v|
    v.freeze if v.is_a?(Array) || v.is_a?(Hash)
  end

  super
end

#from_csv(csv, opts = OPTS) ⇒ Object

Attempt to parse a single instance from the given CSV string



115
116
117
 
# File 'lib/sequel/plugins/csv_serializer.rb', line 115

def from_csv(csv, opts = OPTS)
  new.from_csv(csv, opts)
end

#process_csv_serializer_opts(opts) ⇒ Object

Convert the options hash to one that can be passed to CSV.



120
121
122
123
124
125
126
127
128
 
# File 'lib/sequel/plugins/csv_serializer.rb', line 120

def process_csv_serializer_opts(opts)
  opts = (csv_serializer_opts || OPTS).merge(opts)
  opts_cols = opts.delete(:columns)
  opts_include = opts.delete(:include)
  opts_except = opts.delete(:except)
  only = opts.delete(:only) 
  opts[:headers] ||= Array(only || opts_cols || columns) + Array(opts_include) - Array(opts_except)
  opts
end