Class: AdvancedAR::ParamValidator
- Inherits:
-
Object
- Object
- AdvancedAR::ParamValidator
- Defined in:
- lib/advanced_ar/param_validator.rb
Constant Summary collapse
- TIME_TYPES =
[Date, DateTime, Time].freeze
- CHECKS =
%i[type specified present default transform in block items pattern].freeze
- NON_PREFIXED =
%i[default transform type message].freeze
- PREFIXES =
%i[all onem onep one none].freeze
- PREFIX_ALIASES =
{ any: :onep, not: :none }.freeze
- ALL_PREFIXES =
(PREFIXES + PREFIX_ALIASES.keys).freeze
- VALID_FLAGS =
%i[present specified].freeze
Instance Attribute Summary collapse
-
#context ⇒ Object
Returns the value of attribute context.
-
#errors ⇒ Object
Returns the value of attribute errors.
-
#options ⇒ Object
Returns the value of attribute options.
Class Method Summary collapse
Instance Method Summary collapse
- #apply_checks(&blk) ⇒ Object
-
#initialize(block, context, parameters = nil, options = nil) ⇒ ParamValidator
constructor
A new instance of ParamValidator.
- #parameter(param_keys, *args, **kwargs, &blk) ⇒ Object (also: #p)
Constructor Details
#initialize(block, context, parameters = nil, options = nil) ⇒ ParamValidator
Returns a new instance of ParamValidator.
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# File 'lib/advanced_ar/param_validator.rb', line 16 def initialize(block, context, parameters = nil, = nil) @block = block @context = context @params = parameters || context.params @subkeys = [] @options = || {} @errors = {} @explicit_parameters = [] end |
Instance Attribute Details
#context ⇒ Object
Returns the value of attribute context.
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# File 'lib/advanced_ar/param_validator.rb', line 3 def context @context end |
#errors ⇒ Object
Returns the value of attribute errors.
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# File 'lib/advanced_ar/param_validator.rb', line 3 def errors @errors end |
#options ⇒ Object
Returns the value of attribute options.
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# File 'lib/advanced_ar/param_validator.rb', line 3 def @options end |
Class Method Details
.assert(params, context: nil, handle:, &blk) ⇒ Object
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# File 'lib/advanced_ar/param_validator.rb', line 32 def self.assert(params, context: nil, handle:, &blk) errors = check(params, context: context, &blk) if errors.present? handle.call(errors) else params end end |
.check(params, context: nil, &blk) ⇒ Object
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# File 'lib/advanced_ar/param_validator.rb', line 26 def self.check(params, context: nil, &blk) pv = new(blk, context, params) pv.apply_checks pv.errors end |
Instance Method Details
#apply_checks(&blk) ⇒ Object
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# File 'lib/advanced_ar/param_validator.rb', line 41 def apply_checks(&blk) blk ||= @block args = trim_arguments(blk, [params, @subkeys[-1]]) instance_exec(*args, &blk) end |
#parameter(param_keys, *args, **kwargs, &blk) ⇒ Object Also known as: p
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# File 'lib/advanced_ar/param_validator.rb', line 47 def parameter(param_keys, *args, **kwargs, &blk) param_keys = Array(param_keys) opts = normalize_opts(*args, **kwargs, &blk) checks = {} PREFIXES.each do |pfx| pfx_keys = opts[pfx]&.keys&.select { |k| opts[pfx][k] } || [] pfx_keys.each do |k| checks[k] = pfx # TODO: Support filters connected to multiple prefixes end # TODO: warn if pfx != :all && param_keys.length == 1 end NON_PREFIXED.each do |k| checks[k] = nil end all_results = {} param_keys.each do |pk| check_results = all_results[pk] = {} run_check = ->(check, &blk) { exec_check(check_results, check, checks, options: opts, &blk) } exec_check(check_results, :type) { coerce_type(params, pk, opts) } || next run_check[:specified] { params.key?(pk) || 'must be specified' } || next run_check[:present] { params[pk].present? || 'must be present' } || next # Set Default if params[pk].nil? && !opts[:default].nil? params[pk] ||= opts[:default].respond_to?(:call) ? opts[:default].call : opts[:default] next # We can assume that the default value is allowed end # Apply Transform params[pk] = opts[:transform].to_proc.call(params[pk]) if params.include?(pk) && opts[:transform] next if params[pk].nil? run_check[:pattern] do |pattern| return true if params[pk].to_s.match?(pattern) "must match pattern: #{pattern.inspect}" end run_check[:in] do |one_of| next true if one_of.include?(params[pk]) if one_of.is_a?(Range) "must be between: #{one_of.begin}..#{one_of.end}" else "must be one of: #{one_of.to_a.join(', ')}" end end # Nested check run_check[:block] do |blk| iterate_array = false # TODO sub_parameter(pk) do if params.is_a?(Array) && iterate_array params.each_with_index do |v, i| sub_parameter(i) { apply_checks(&blk) } end else apply_checks(&blk) end end end # Nested check run_check[:items] do |blk| sub_parameter(pk) do if params.is_a?(Array) params.each_with_index do |v, i| sub_parameter(i) { apply_checks(&blk) } end else raise "items: validator can only be used with Arrays" end end end end final_errors = {} checks.each do |check, check_prefix| if check_prefix == :all || check_prefix == nil all_results.each do |field, err_map| errs = err_map[check] next unless errs.present? final_errors[field] = merge_error_hashes(final_errors[field], errs) end elsif check_prefix == :none all_results.each do |field, err_map| errs = err_map[check] final_errors[field] = merge_error_hashes(final_errors[field], "must NOT be #{check}") unless errs.present? end else counts = check_pass_count(check, all_results) field_key = param_keys.join(', ') string_prefixes = { onep: 'One or more of', onem: 'At most one of', one: 'Exactly one of', } if (counts[:passed] != 1 && check_prefix == :one) || (counts[:passed] > 1 && check_prefix == :onem) || (counts[:passed] < 1 && check_prefix == :onep) final_errors = merge_error_hashes(final_errors, "#{string_prefixes[check_prefix]} #{field_key} #{check}") end end end @errors = merge_error_hashes(@errors, final_errors) final_errors end |