Module: Rackr::Action

Included in:
Rackr, Router::Errors::DevHtml
Defined in:
lib/rackr/action.rb

Constant Summary collapse

@@default_headers_for = 
lambda { |content_type, headers, content|
  {
    'content-type' => content_type,
    'content-length' => content.bytesize.to_s
  }.merge(headers)
}
@@render = 
{
  html: lambda do |val, status: 200, headers: {}, html: nil|
    [
      status,
      @@default_headers_for.call('text/html; charset=utf-8', headers, val),
      [val]
    ]
  end,
  text: lambda do |val, status: 200, headers: {}, text: nil|
    [
      status,
      @@default_headers_for.call('text/plain', headers, val),
      [val]
    ]
  end,
  json: lambda do |val, status: 200, headers: {}, json: nil|
    val = Oj.dump(val, mode: :compat) unless val.is_a?(String)
    [
      status,
      @@default_headers_for.call('application/json', headers, val),
      [val]
    ]
  end,
  res: lambda do |val, status: nil, headers: nil, res: nil|
    val.status = status if status
    headers.each { |h, v| val.set_header(h, v) } if headers
    val.finish
  end,
  response: lambda do |val, status: nil, headers: nil, response: nil|
    val.status = status if status
    headers.each { |h, v| val.set_header(h, v) } if headers
    val.finish
  end
}.freeze

Class Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/rackr/action.rb', line 51

def self.included(base)
  base.class_eval do
    attr_reader :routes, :config, :deps, :db if self != Rackr

    def initialize(routes: nil, config: nil)
      @routes = routes
      @config = config
      @deps = config[:deps]
      @db = config.dig(:deps, :db)
    end

    def render(**opts)
      type = opts.keys.first
      content = opts[type]

      @@render[type]&.call(content, **opts) || _render_view(content, **opts)
    end

    def view_response(
      paths,
      status: 200,
      headers: {},
      layout_path: 'layout'
    )
      _render_view(
        paths,
        status: status,
        headers: headers,
        layout_path: layout_path,
        response_instance: true
      )
    end

    def _render_view(
      paths,
      status: 200,
      headers: {},
      layout_path: 'layout',
      response_instance: false,
      view: nil
    )
      base_path = config.dig(:views, :path) || 'views'

      file_or_nil = lambda do |path|
        ::File.read(path)
      rescue Errno::ENOENT
        nil
      end

      file_content = if paths.is_a?(Array)
                       paths.map { |path| ::File.read("#{base_path}/#{path}.html.erb") }.join
                     else
                       ::File.read("#{base_path}/#{paths}.html.erb")
                     end

      layout_content = file_or_nil.call("#{base_path}/#{layout_path}.html.erb")

      parsed_erb =
        if layout_content
          load_erb(layout_content) do
            load_erb(file_content, binding_context: binding)
          end
        else
          load_erb(file_content, binding_context: binding)
        end

      if response_instance
        return Rack::Response.new(
          parsed_erb,
          status,
          @@default_headers_for.call('text/html; charset=utf-8', headers, parsed_erb)
        )
      end

      [status, @@default_headers_for.call('text/html; charset=utf-8', headers, parsed_erb), [parsed_erb]]
    end

    def not_found!
      raise Rackr::NotFound
    end

    def load_json(val)
      return Oj.load(val.body.read) if val.is_a?(Rack::Request)

      Oj.load(val)
    end

    def html_response(content = '', status: 200, headers: {})
      Rack::Response.new(content, status, @@default_headers_for.call('text/html; charset=utf-8', headers, content))
    end

    def json_response(content = {}, status: 200, headers: {})
      content = Oj.dump(content, mode: :compat) unless content.is_a?(String)
      Rack::Response.new(content, status, @@default_headers_for.call('application/json', headers, content))
    end

    def text_response(content, status: 200, headers: {})
      Rack::Response.new(content, status, @@default_headers_for.call('text/plain', headers, content))
    end

    def load_erb(content, binding_context: nil)
      eval(Erubi::Engine.new(content).src, binding_context)
    end

    def head(status, headers: {})
      [status, headers, []]
    end

    def head_response(status, headers: {})
      Rack::Response.new(nil, status, headers)
    end

    def redirect_response(url, headers: {})
      Rack::Response.new(
        nil,
        302,
        { 'location' => url }.merge(headers)
      )
    end

    def redirect_to(url, headers: {})
      [302, { 'location' => url }.merge(headers), []]
    end

    def response(body = nil, status = 200, headers = {})
      Rack::Response.new(body, status, headers)
    end
  end
end