Class: YiffSpace::Search::QueryBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/yiffspace/search/query_builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dsl, klass, relation, user) ⇒ QueryBuilder

param, db_field, type


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# File 'lib/yiffspace/search/query_builder.rb', line 9

def initialize(dsl, klass, relation, user)
  dsl ||= []
  @dsl = dsl
  @klass = klass
  @relation = relation
  @user = user
  @q = relation
end

Instance Attribute Details

#dsl ⇒ Object (readonly)

Returns the value of attribute dsl.



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# File 'lib/yiffspace/search/query_builder.rb', line 6

def dsl
  @dsl
end

#klass ⇒ Object (readonly)

Returns the value of attribute klass.



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# File 'lib/yiffspace/search/query_builder.rb', line 6

def klass
  @klass
end

#q ⇒ Object (readonly)

Returns the value of attribute q.



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# File 'lib/yiffspace/search/query_builder.rb', line 6

def q
  @q
end

#relation ⇒ Object (readonly)

Returns the value of attribute relation.



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# File 'lib/yiffspace/search/query_builder.rb', line 6

def relation
  @relation
end

#user ⇒ Object (readonly)

Returns the value of attribute user.



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# File 'lib/yiffspace/search/query_builder.rb', line 6

def user
  @user
end

Instance Method Details

#process_dsl(dsl, params) ⇒ Object 



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# File 'lib/yiffspace/search/query_builder.rb', line 18

def process_dsl(dsl, params)
  dsl[:fields].each do |param, field, type = nil, block = nil, options = {}|
    value = params[param]
    multi = options.fetch(:multi, nil) || false
    like = options.fetch(:like, nil) || false
    ilike = options.fetch(:ilike, nil) || false
    normalize = options.fetch(:normalize, nil) || ->(value) { value }
    next if value.nil?

    value = normalize.call(value)
    @q = block.call(q) if block
    if type.is_a?(Proc)
      args = [q, value, user, params]
      @q = type.call(*args.first(type.arity))
      next
    end
    field ||= param
    if like
      @q = q.where.like(field => value)
      next
    elsif ilike
      @q = q.where.ilike(field => value)
      next
    end
    type ||= QueryHelper.get_column(field, klass.table_name).sql_type_metadata.type
    case type
    when :boolean
      @q = q.boolean_attribute_matches(field, value)
    when :integer
      # multiple comma separated values are implicitly supported
      # trimming them seems unneeded
      # value = value[0.. value.index(",") - 1] unless multi
      @q = q.numeric_attribute_matches(field, value)
    when :datetime
      @q = q.datetime_attribute_matches(field, value)
    when :text, :string
      value = value.split(",").first(YiffSpace.config.max_multi_count.call) if multi # explicitly supports arrays
      @q = q.text_attribute_matches(field, value)
    when :inet
      @q = q.ip_attribute_matches(field, value)
    when :present
      @q = q.attribute_present(field, value)
    else
      raise(ArgumentError, "Unknown type: #{type} for field: #{field}")
    end
  end

  dsl[:associations].each do |attribute, klass, nested_dsl, join|
    next if params[attribute].nil?

    @q = q.joins(join)
    nested_relation = klass.all
    nested_builder = QueryBuilder.new(nested_dsl, klass, nested_relation, user)
    nested_relation = nested_builder.search(params[attribute])
    @q = q.merge(nested_relation)
  end
end

#search(params = {}) ⇒ Object 



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# File 'lib/yiffspace/search/query_builder.rb', line 76

def search(params = {})
  params.transform_keys!(&:to_sym)
  process_dsl(dsl, params)
  q
end