Class: Roda::Project::Bin::Generators::Migration::FieldParser

Inherits:
Object
  • Object
show all
Includes:
Helpers::Inflections
Defined in:
lib/roda/project/bin/generators/migration/field_parser.rb

Constant Summary collapse

TYPE_MAP = 
{
  "string" => "String",
  "text" => "String",
  "integer" => "Integer",
  "bigint" => "Bignum",
  "float" => "Float",
  "decimal" => "BigDecimal",
  "datetime" => "DateTime",
  "timestamp" => "DateTime",
  "time" => "Time",
  "date" => "Date",
  "boolean" => "TrueClass",
  "binary" => "File",
  "json" => ":json",
  "jsonb" => ":jsonb",
  "uuid" => ":uuid"
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helpers::Inflections

camelize, plural?, pluralize, singular?, singularize, underscore

Constructor Details

#initialize(raw_fields) ⇒ FieldParser

Returns a new instance of FieldParser.



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# File 'lib/roda/project/bin/generators/migration/field_parser.rb', line 31

def initialize(raw_fields)
  @raw_fields = raw_fields || []
end

Instance Attribute Details

#raw_fields ⇒ Object (readonly)

Returns the value of attribute raw_fields.



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# File 'lib/roda/project/bin/generators/migration/field_parser.rb', line 29

def raw_fields
  @raw_fields
end

Instance Method Details

#parse ⇒ Object 



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# File 'lib/roda/project/bin/generators/migration/field_parser.rb', line 35

def parse
  fields = []

  raw_fields.each do |raw_field|
    parts = raw_field.to_s.split(":")
    next if parts.empty?

    name = parts[0]
    type_part = parts[1] || "string"
    index_part = parts[2]

    # Extract modifier e.g. string{50}, decimal{10.2}, references{polymorphic}
    type, modifier = extract_type_and_modifier(type_part)

    if type == "references" || type == "belongs_to"
      if modifier == "polymorphic"
        fields << {
          name: "#{name}_id",
          type: "Bignum",
          options: {},
          index: false,
          composite_index: ["#{name}_type", "#{name}_id"]
        }
        fields << {
          name: "#{name}_type",
          type: "String",
          options: {},
          index: false
        }
      else
        singular_name = singularize(name)
        plural_table = pluralize(singular_name)
        fields << {
          name: "#{name}_id",
          is_reference: true,
          target_table: plural_table,
          index: true,
          options: {}
        }
      end
    else
      sequel_type = TYPE_MAP[type] || "String"
      options = {}

      options[:text] = true if type == "text"

      if modifier
        if modifier.include?(".")
          prec, scale = modifier.split(".").map(&:to_i)
          options[:size] = [prec, scale]
        elsif /^\d+$/.match?(modifier)
          options[:size] = modifier.to_i
        end
      end

      index_val = parse_index_spec(index_part)

      fields << {
        name: name,
        type: sequel_type,
        options: options,
        index: index_val
      }
    end
  end

  fields
end