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Contents
module Api
module ResourcesController
class ConditionParser
OPERATOR_MAP = {
gt: :>,
gt_or_eq: :>=,
eq: :'=',
not_eq: :'<>',
lt_or_eq: :<=,
lt: :<
}
def initialize(scope, field, condition)
@scope, @field, @condition = scope, field, condition
end
def condition_statement
build_condition_statement(@field, @condition)
end
private
def build_condition_statement(parent_key, condition, nested = false)
if is_a_condition?(parent_key) && !nested
column, operator = extract_column_and_operator(parent_key)
if column_is_boolean?(column)
["#{column} = ?", to_boolean(condition)]
else
["#{column} = ?", condition]
end
else
if nested
column = extract_column(parent_key)
{ column => condition }
else
{ parent_key => build_condition_statement(condition.first[0], condition.first[1], true) }
end
end
end
def is_a_condition?(obj)
!!extract_operator(obj)
end
def extract_operator(obj)
string = obj.to_s
operator_map.each do |key, value|
return value if string.end_with?("(#{key})")
end
nil
end
def extract_column(obj)
obj.to_s.split("(").first
end
def extract_column_and_operator(string)
if string =~ /([\.a-z_]{1,})\(([a-z_]{2,})\)/
return $~[1], $~[2]
end
end
def operator_map
OPERATOR_MAP
end
def column_is_boolean?(column_name)
@scope.columns_hash[column_name].type == :boolean
end
def to_boolean(string)
ActiveRecord::ConnectionAdapters::Column.value_to_boolean(string)
end
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems