method

template

v1.0.0 - Show latest stable - 0 notes - Class: Rails::Generator::Commands::Create

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What's this?

template(relative_source, relative_destination, template_options = {}) public

Generate a file for a Rails application using an ERuby template. Looks up and evalutes a template by name and writes the result.

The <a href="/rails/ERB">ERB</a> template uses explicit trim mode to best control the proliferation of whitespace in generated code. <%- trims leading whitespace; -%> trims trailing whitespace including one newline.

A hash of template options may be passed as the last argument. The options accepted by the file are accepted as well as :assigns, a hash of variable bindings. Example:

  template 'foo', 'bar', :assigns => { :action => 'view' }

Template is implemented in terms of file. It calls file with a block which takes a file handle and returns its rendered contents.

Show source

# File railties/lib/rails_generator/commands.rb, line 267
        def template(relative_source, relative_destination, template_options = {})
          file(relative_source, relative_destination, template_options) do |file|
            # Evaluate any assignments in a temporary, throwaway binding.
            vars = template_options[:assigns] || {}
            b = binding
            vars.each { |k,v| eval "#{k} = vars[:#{k}] || vars['#{k}']", b }

            # Render the source file with the temporary binding.
            ERB.new(file.read, nil, '-').result(b)
          end
        end

template

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