Class: Uniword::Template::Helpers::FilterHelper

Inherits:
Object
  • Object
show all
Defined in:
lib/uniword/template/helpers/filter_helper.rb

Overview

Helper for applying filters to template values.

Supports value transformations:

  • format: Date/time formatting
  • upcase: Uppercase text
  • downcase: Lowercase text
  • titleize: Title case text
  • capitalize: Capitalize first letter
  • currency: Format as currency

Syntax: | filter} or | filter: arg}

Responsibility: Filter application only Single Responsibility Principle: Does NOT parse or render

Examples:

Apply filters

helper = FilterHelper.new
result = helper.apply("hello", "upcase") # => "HELLO"
result = helper.apply(date, "format", "%Y-%m-%d")

Instance Method Summary collapse

Instance Method Details

#apply(value, filter_name, *args) ⇒ Object

Apply filter to value

Parameters:

  • value (Object) —

    Value to filter

  • filter_name (String) —

    Filter name

  • args (Array) —

    Filter arguments

Returns:

  • (Object) —

    Filtered value



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# File 'lib/uniword/template/helpers/filter_helper.rb', line 32

def apply(value, filter_name, *args)
  case filter_name.to_s
  when "format"
    apply_format(value, args.first || "%Y-%m-%d")
  when "upcase"
    value.to_s.upcase
  when "downcase"
    value.to_s.downcase
  when "titleize"
    titleize(value.to_s)
  when "capitalize"
    value.to_s.capitalize
  when "currency"
    apply_currency(value, args.first || "USD")
  when "number"
    apply_number_format(value, args.first)
  when "truncate"
    truncate(value.to_s, args.first&.to_i || 30)
  when "strip"
    value.to_s.strip
  when "reverse"
    value.to_s.reverse
  else
    # Unknown filter - return value unchanged
    value
  end
end