class Faker::Base
Constants
- Letters
- Numbers
- ULetters
Public Class Methods
# File lib/faker.rb, line 56 def bothify(string) letterify(numerify(string)) end
Helper for the common approach of grabbing a translation with an array of values and selecting one of them.
# File lib/faker.rb, line 96 def fetch(key) fetched = sample(translate("faker.#{key}")) if fetched && fetched.match(/^\//) and fetched.match(/\/$/) # A regex regexify(fetched) else fetched end end
Helper for the common approach of grabbing a translation with an array of values and returning all of them.
# File lib/faker.rb, line 107 def fetch_all(key) fetched = translate("faker.#{key}") fetched = fetched.last if fetched.size <= 1 if !fetched.respond_to?(:sample) && fetched.match(/^\//) and fetched.match(/\/$/) # A regex regexify(fetched) else fetched end end
# File lib/faker.rb, line 168 def flexible(key) @flexible_key = key end
# File lib/faker.rb, line 52 def letterify(letter_string) letter_string.gsub(/\?/) { sample(ULetters) } end
You can add whatever you want to the locale file, and it will get caught here. E.g., in your locale file, create a
name: girls_name: ["Alice", "Cheryl", "Tatiana"]
Then you can call Faker::Name.girls_name and it will act like first_name
# File lib/faker.rb, line 177 def method_missing(m, *args, &block) super unless @flexible_key # Use the alternate form of translate to get a nil rather than a "missing translation" string if translation = translate(:faker)[@flexible_key][m] sample(translation) else super end end
make sure numerify results doesn’t start with a zero
# File lib/faker.rb, line 48 def numerify(number_string) number_string.sub(/#/) { (rand(9)+1).to_s }.gsub(/#/) { rand(10).to_s } end
Load formatted strings from the locale, “parsing” them into method calls that can be used to generate a formatted translation: e.g., “#{first_name} #{last_name}”.
# File lib/faker.rb, line 120 def parse(key) fetched = fetch(key) parts = fetched.scan(/(\(?)#\{([A-Za-z]+\.)?([^\}]+)\}([^#]+)?/).map {|prefix, kls, meth, etc| # If the token had a class Prefix (e.g., Name.first_name) # grab the constant, otherwise use self cls = kls ? Faker.const_get(kls.chop) : self # If an optional leading parentheses is not present, prefix.should == "", otherwise prefix.should == "(" # In either case the information will be retained for reconstruction of the string. text = prefix # If the class has the method, call it, otherwise # fetch the transation (i.e., faker.name.first_name) text += cls.respond_to?(meth) ? cls.send(meth) : fetch("#{(kls || self).to_s.split('::').last.downcase}.#{meth.downcase}") # And tack on spaces, commas, etc. left over in the string text += etc.to_s } # If the fetched key couldn't be parsed, then fallback to numerify parts.any? ? parts.join : numerify(fetched) end
# File lib/faker.rb, line 206 def rand(max = nil) if max.nil? Faker::Config.random.rand elsif max.is_a?(Range) || max.to_i > 0 Faker::Config.random.rand(max) else 0 end end
Generates a random value between the interval
# File lib/faker.rb, line 189 def rand_in_range(from, to) from, to = to, from if to < from rand(from..to) end
Given a regular expression, attempt to generate a string that would match it. This is a rather simple implementation, so don't be shocked if it blows up on you in a spectacular fashion.
It does not handle ., *, unbounded ranges such as {1,}, extensions such as (?=), character classes, some abbreviations for character classes, and nested parentheses.
I told you it was simple. :) It's also probably dog-slow, so you shouldn't use it.
It will take a regex like this:
/^[A-PR-UWYZ0-9][AEHMNPRTVXY0-9]?? 1,2[ABD-HJLN-UW-Z]{2}$/
and generate a string like this:
“U3V 3TP”
# File lib/faker.rb, line 79 def regexify(re) re = re.source if re.respond_to?(:source) # Handle either a Regexp or a String that looks like a Regexp re. gsub(/^\/?\^?/, '').gsub(/\$?\/?$/, ''). # Ditch the anchors gsub(/\{(\d+)\}/, '{\1,\1}').gsub(/\?/, '{0,1}'). # All {2} become {2,2} and ? become {0,1} gsub(/(\[[^\]]+\])\{(\d+),(\d+)\}/) {|match| $1 * sample(Array(Range.new($2.to_i, $3.to_i))) }. # [12]{1,2} becomes [12] or [12][12] gsub(/(\([^\)]+\))\{(\d+),(\d+)\}/) {|match| $1 * sample(Array(Range.new($2.to_i, $3.to_i))) }. # (12|34){1,2} becomes (12|34) or (12|34)(12|34) gsub(/(\\?.)\{(\d+),(\d+)\}/) {|match| $1 * sample(Array(Range.new($2.to_i, $3.to_i))) }. # A{1,2} becomes A or AA or \d{3} becomes \d\d\d gsub(/\((.*?)\)/) {|match| sample(match.gsub(/[\(\)]/, '').split('|')) }. # (this|that) becomes 'this' or 'that' gsub(/\[([^\]]+)\]/) {|match| match.gsub(/(\w\-\w)/) {|range| sample(Array(Range.new(*range.split('-')))) } }. # All A-Z inside of [] become C (or X, or whatever) gsub(/\[([^\]]+)\]/) {|match| sample($1.split('')) }. # All [ABC] become B (or A or C) gsub('\d') {|match| sample(Numbers) }. gsub('\w') {|match| sample(Letters) } end
# File lib/faker.rb, line 198 def sample(list) list.respond_to?(:sample) ? list.sample(random: Faker::Config.random) : list end
# File lib/faker.rb, line 202 def shuffle(list) list.shuffle(random: Faker::Config.random) end
Call I18n.translate with our configured locale if no locale is specified
# File lib/faker.rb, line 144 def translate(*args) opts = args.last.is_a?(Hash) ? args.pop : {} opts[:locale] ||= Faker::Config.locale opts[:raise] = true I18n.translate(*(args.push(opts))) rescue I18n::MissingTranslationData opts = args.last.is_a?(Hash) ? args.pop : {} opts[:locale] = :en # Super-simple fallback -- fallback to en if the # translation was missing. If the translation isn't # in en either, then it will raise again. I18n.translate(*(args.push(opts))) end
# File lib/faker.rb, line 194 def unique(max_retries = 10_000) @unique_generator ||= UniqueGenerator.new(self, max_retries) end
Executes block with given locale set.
# File lib/faker.rb, line 160 def with_locale(tmp_locale = nil) current_locale = Faker::Config.own_locale Faker::Config.locale = tmp_locale I18n.with_locale(tmp_locale) { yield } ensure Faker::Config.locale = current_locale end