Accepts a hash of SQL conditions and replaces those attributes that correspond to a #composed_of relationship with their expanded aggregate attribute values.
Given:
class Person < ActiveRecord::Base
composed_of :address, class_name: "Address",
mapping: [%w(address_street street), %w(address_city city)]
end
Then:
{ address: Address.new("813 abc st.", "chicago") }
# => { address_street: "813 abc st.", address_city: "chicago" }
# File activerecord/lib/active_record/sanitization.rb, line 93
def expand_hash_conditions_for_aggregates(attrs)
expanded_attrs = {}
attrs.each do |attr, value|
if aggregation = reflect_on_aggregation(attr.to_sym)
mapping = aggregation.mapping
mapping.each do |field_attr, aggregate_attr|
if mapping.size == 1 && !value.respond_to?(aggregate_attr)
expanded_attrs[field_attr] = value
else
expanded_attrs[field_attr] = value.send(aggregate_attr)
end
end
else
expanded_attrs[attr] = value
end
end
expanded_attrs
end Accepts an array of conditions. The array has each value sanitized and interpolated into the SQL statement.
sanitize_sql_array(["name=? and group_id=?", "foo'bar", 4]) # => "name='foo''bar' and group_id=4" sanitize_sql_array(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4]) # => "name='foo''bar' and group_id=4" sanitize_sql_array(["name='%s' and group_id='%s'", "foo'bar", 4]) # => "name='foo''bar' and group_id='4'"
# File activerecord/lib/active_record/sanitization.rb, line 164
def sanitize_sql_array(ary)
statement, *values = ary
if values.first.is_a?(Hash) && statement =~ /:\w+/
replace_named_bind_variables(statement, values.first)
elsif statement.include?('?')
replace_bind_variables(statement, values)
elsif statement.blank?
statement
else
statement % values.collect { |value| connection.quote_string(value.to_s) }
end
end Accepts an array, hash, or string of SQL conditions and sanitizes them into a valid SQL fragment for a SET clause.
sanitize_sql_for_assignment(["name=? and group_id=?", nil, 4])
# => "name=NULL and group_id=4"
sanitize_sql_for_assignment(["name=:name and group_id=:group_id", name: nil, group_id: 4])
# => "name=NULL and group_id=4"
Post.send(:sanitize_sql_for_assignment, { name: nil, group_id: 4 })
# => "`posts`.`name` = NULL, `posts`.`group_id` = 4"
sanitize_sql_for_assignment("name=NULL and group_id='4'")
# => "name=NULL and group_id='4'"
# File activerecord/lib/active_record/sanitization.rb, line 54 def sanitize_sql_for_assignment(assignments, default_table_name = self.table_name) case assignments when Array; sanitize_sql_array(assignments) when Hash; sanitize_sql_hash_for_assignment(assignments, default_table_name) else assignments end end
Accepts an array or string of SQL conditions and sanitizes them into a valid SQL fragment for a WHERE clause.
sanitize_sql_for_conditions(["name=? and group_id=?", "foo'bar", 4])
# => "name='foo''bar' and group_id=4"
sanitize_sql_for_conditions(["name=:name and group_id=:group_id", name: "foo'bar", group_id: 4])
# => "name='foo''bar' and group_id='4'"
sanitize_sql_for_conditions(["name='%s' and group_id='%s'", "foo'bar", 4])
# => "name='foo''bar' and group_id='4'"
sanitize_sql_for_conditions("name='foo''bar' and group_id='4'")
# => "name='foo''bar' and group_id='4'"
# File activerecord/lib/active_record/sanitization.rb, line 29 def sanitize_sql_for_conditions(condition) return nil if condition.blank? case condition when Array; sanitize_sql_array(condition) else condition end end
Accepts an array, or string of SQL conditions and sanitizes them into a valid SQL fragment for an ORDER clause.
sanitize_sql_for_order(["field(id, ?)", [1,3,2]])
# => "field(id, 1,3,2)"
sanitize_sql_for_order("id ASC")
# => "id ASC"
# File activerecord/lib/active_record/sanitization.rb, line 70
def sanitize_sql_for_order(condition)
if condition.is_a?(Array) && condition.first.to_s.include?('?')
sanitize_sql_array(condition)
else
condition
end
end Sanitizes a hash of attribute/value pairs into SQL conditions for a SET clause.
sanitize_sql_hash_for_assignment({ status: nil, group_id: 1 }, "posts")
# => "`posts`.`status` = NULL, `posts`.`group_id` = 1"
# File activerecord/lib/active_record/sanitization.rb, line 116
def sanitize_sql_hash_for_assignment(attrs, table)
c = connection
attrs.map do |attr, value|
if value.is_a?(Base)
require "active_support/core_ext/string/filters"
ActiveSupport::Deprecation.warn(" Passing `ActiveRecord::Base` objects to
`sanitize_sql_hash_for_assignment` (or methods which call it,
such as `update_all`) is deprecated. Please pass the id directly,
instead.
".squish)
else
value = type_for_attribute(attr.to_s).serialize(value)
end
"#{c.quote_table_name_for_assignment(table, attr)} = #{c.quote(value)}"
end.join(', ')
end Sanitizes a string so that it is safe to use within an SQL LIKE statement. This method uses escape_character to escape all occurrences of “", ”_“ and ”%“.
sanitize_sql_like("100%")
# => "100\\%"
sanitize_sql_like("snake_cased_string")
# => "snake\\_cased\\_string"
sanitize_sql_like("100%", "!")
# => "100!%"
sanitize_sql_like("snake_cased_string", "!")
# => "snake!_cased!_string"
# File activerecord/lib/active_record/sanitization.rb, line 148
def sanitize_sql_like(string, escape_character = "\\")
pattern = Regexp.union(escape_character, "%", "_")
string.gsub(pattern) { |x| [escape_character, x].join }
end
© 2004–2017 David Heinemeier Hansson
Licensed under the MIT License.