Module: Nanoc3::Helpers::Filtering

### Home Classes Methods

### In Files

- lib/nanoc3/helpers/filtering.rb

### Methods

- #filter

### Included Modules

- Nanoc3::Helpers::Capturing

### Files

- ChangeLog
- LICENSE

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No matching classes.

# Nanoc3::Helpers::Filtering

Provides functionality for filtering parts of an item or a layout.

### Public Instance Methods

filter(filter_name, arguments={}, &block) click to toggle source

Filters the content in the given block and outputs it. This function does not return anything; instead, the filtered contents is directly appended to the output buffer (`_erbout`).

This function has been tested with ERB and Haml. Other filters may not work correctly.

@example Running a filter on a part of an item or layout

    <p>Lorem ipsum dolor sit amet...</p>
    <% filter :rubypants do %>
      <p>Consectetur adipisicing elit...</p>
    <% end %>

@param [Symbol] filter_name The name of the filter to run on the contents of the block

@param [Hash] argument Arguments to pass to the filter

@return [void]

    # File lib/nanoc3/helpers/filtering.rb, line 30
    def filter(filter_name, arguments={}, &block)
      # Capture block
      data = capture(&block)

      # Find filter
      klass = Nanoc3::Filter.named(filter_name)
      raise Nanoc3::Errors::UnknownFilter.new(filter_name) if klass.nil?
      filter = klass.new(@item_rep.assigns)

      # Filter captured data
      filtered_data = filter.run(data, arguments)

      # Append filtered data to buffer
      buffer = eval('_erbout', block.binding)
      buffer << filtered_data
    end

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