Class: Apipie::ParamDescription

Inherits:
Object
  • Object
show all
Defined in:
lib/apipie/param_description.rb

Overview

method parameter description

name - method name (show) desc - description required - boolean if required validator - Validator::BaseValidator subclass

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(method_description, name, validator, desc_or_options = nil, options = {}, &block) ⇒ ParamDescription

Returns a new instance of ParamDescription.



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# File 'lib/apipie/param_description.rb', line 25

def initialize(method_description, name, validator, desc_or_options = nil, options = {}, &block)

  if desc_or_options.is_a?(Hash)
    options = options.merge(desc_or_options)
  elsif desc_or_options.is_a?(String)
    options[:desc] = desc_or_options
  elsif !desc_or_options.nil?
    raise ArgumentError.new("param description: expected description or options as 3rd parameter")
  end

  options.symbolize_keys!

  # we save options to know what was passed in DSL
  @options = options

  @method_description = method_description
  @name = concern_subst(name)
  @desc = concern_subst(Apipie.markup_to_html(@options[:desc] || ''))
  @parent = @options[:parent]
  @required = if @options.has_key? :required
    @options[:required]
  else
    Apipie.configuration.required_by_default?
  end

  @allow_nil = @options[:allow_nil] || false

  action_awareness

  if validator
    @validator = Validator::BaseValidator.find(self, validator, @options, block)
    raise "Validator for #{validator} not found." unless @validator
  end

  @validations = Array(options[:validations]).map {|v| concern_subst(Apipie.markup_to_html(v)) }
end

Instance Attribute Details

#allow_nil ⇒ Object (readonly)

Returns the value of attribute allow_nil.



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# File 'lib/apipie/param_description.rb', line 11

def allow_nil
  @allow_nil
end

#desc ⇒ Object (readonly)

Returns the value of attribute desc.



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# File 'lib/apipie/param_description.rb', line 11

def desc
  @desc
end

#method_description ⇒ Object (readonly)

Returns the value of attribute method_description.



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# File 'lib/apipie/param_description.rb', line 11

def method_description
  @method_description
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/apipie/param_description.rb', line 11

def name
  @name
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/apipie/param_description.rb', line 11

def options
  @options
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/apipie/param_description.rb', line 13

def parent
  @parent
end

#required ⇒ Object

Returns the value of attribute required.



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# File 'lib/apipie/param_description.rb', line 13

def required
  @required
end

#validations ⇒ Object (readonly)

Returns the value of attribute validations.



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# File 'lib/apipie/param_description.rb', line 11

def validations
  @validations
end

#validator ⇒ Object (readonly)

Returns the value of attribute validator.



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# File 'lib/apipie/param_description.rb', line 11

def validator
  @validator
end

Class Method Details

.from_dsl_data(method_description, args) ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 15

def self.from_dsl_data(method_description, args)
  param_name, validator, desc_or_options, options, block = args
  Apipie::ParamDescription.new(method_description,
                               param_name,
                               validator,
                               desc_or_options,
                               options,
                               &block)
end

.unify(params) ⇒ Object

merge param descripsiont. Allows defining hash params on more places (e.g. in param_groups). For example:

def_param_group :user do
  param :user, Hash do
    param :name, String
  end
end

param_group :user
param :user, Hash do
  param :password, String
end



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# File 'lib/apipie/param_description.rb', line 138

def self.unify(params)
  ordering = params.map(&:name)
  params.group_by(&:name).map do |name, param_descs|
    param_descs.reduce(&:merge_with)
  end.sort_by { |param| ordering.index(param.name) }
end

Instance Method Details

#action_aware? ⇒ Boolean

action awareness is being inherited from ancestors (in terms of nested params)

Returns:

  • (Boolean) 


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# File 'lib/apipie/param_description.rb', line 147

def action_aware?
  if @options.has_key?(:action_aware)
    return @options[:action_aware]
  elsif @parent
    @parent.action_aware?
  else
    false
  end
end

#action_awareness ⇒ Object

makes modification that are based on the action that the param is defined for. Typical for required and allow_nil variations in crate/update actions.



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# File 'lib/apipie/param_description.rb', line 171

def action_awareness
  if action_aware?
    if !@options.has_key?(:allow_nil)
      if @required
        @allow_nil = false
      else
        @allow_nil = true
      end
    end
    if as_action != "create"
      @required = false
    end
  end
end

#anchor ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 199

def anchor
  (full_name.to_s || "").gsub(/\W/, '_').gsub(/_$/, '')
end

#as_action ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 157

def as_action
  if @options[:param_group] && @options[:param_group][:options] &&
      @options[:param_group][:options][:as]
    @options[:param_group][:options][:as].to_s
  elsif @parent
    @parent.as_action
  else
    @method_description.method
  end
end

#concern_subst(string) ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 186

def concern_subst(string)
  return string if string.nil? or !method_description.from_concern?

  original = string
  string = ":#{original}" if original.is_a? Symbol

  replaced = method_description.resource.controller._apipie_perform_concern_subst(string)

  return original if replaced == string
  return replaced.to_sym if original.is_a? Symbol
  return replaced
end

#full_name ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 71

def full_name
  name_parts = parents_and_self.map(&:name)
  return ([name_parts.first] + name_parts[1..-1].map { |n| "[#{n}]" }).join("")
end

#merge_with(other_param_desc) ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 116

def merge_with(other_param_desc)
  if self.validator && other_param_desc.validator
    self.validator.merge_with(other_param_desc.validator)
  else
    self.validator ||= other_param_desc.validator
  end
  self
end

#parents_and_self ⇒ Object

returns an array of all the parents: starting with the root parent ending with itself



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# File 'lib/apipie/param_description.rb', line 78

def parents_and_self
  ret = []
  if self.parent
    ret.concat(self.parent.parents_and_self)
  end
  ret << self
  ret
end

#to_json ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 87

def to_json
  if validator.is_a? Apipie::Validator::HashValidator
    {
      :name => name.to_s,
      :anchor => anchor,
      :full_name => full_name,
      :description => desc,
      :required => required,
      :allow_nil => allow_nil,
      :validator => validator.to_s,
      :expected_type => validator.expected_type,
      :params => validator.hash_params_ordered.map(&:to_json),
      :validations => validations
    }
  else
    {
      :name => name.to_s,
      :anchor => anchor,
      :full_name => full_name,
      :description => desc,
      :required => required,
      :allow_nil => allow_nil,
      :validator => validator.to_s,
      :expected_type => validator.expected_type,
      :validations => validations
    }
  end
end

#validate(value) ⇒ Object 



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# File 'lib/apipie/param_description.rb', line 62

def validate(value)
  return true if @allow_nil && value.nil?
  unless @validator.valid?(value)
    error = @validator.error
    error = ParamError.new(error) unless error.is_a? Exception
    raise error
  end
end