Module: AnnotateModels

Defined in:
lib/annotate/annotate_models.rb

Constant Summary collapse

COMPAT_PREFIX =

Annotate Models plugin use this header

"== Schema Info"
PREFIX = 
"== Schema Information"
FIXTURE_DIRS = 
["test/fixtures","spec/fixtures"]
UNIT_TEST_DIR =

File.join for windows reverse bar compat? I dont use windows, can`t test

File.join("test", "unit"  )
SPEC_MODEL_DIR = 
File.join("spec", "models")
EXEMPLARS_TEST_DIR = 
File.join("test", "exemplars")
EXEMPLARS_SPEC_DIR =

Object Daddy github.com/flogic/object_daddy/tree/master

File.join("spec", "exemplars")
BLUEPRINTS_DIR =

Machinist github.com/notahat/machinist

File.join("test", "blueprints")

Class Method Summary collapse

Class Method Details

.annotate(klass, file, header, options = {}) ⇒ Object

Given the name of an ActiveRecord class, create a schema info block (basically a comment containing information on the columns and their types) and put it at the front of the model and fixture source files. Returns true or false depending on whether the source files were modified.



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# File 'lib/annotate/annotate_models.rb', line 156

def annotate(klass, file, header,options={})
  info = get_schema_info(klass, header, options)
  annotated = false
  model_name = klass.name.underscore
  model_file_name = File.join(model_dir, file)
  if annotate_one_file(model_file_name, info, options.merge(
          :position=>(options[:position_in_class] || options[:position])))
    annotated = true
  end

  [
    File.join(UNIT_TEST_DIR,      "#{model_name}_test.rb"),      # test
    File.join(SPEC_MODEL_DIR,     "#{model_name}_spec.rb"),      # spec
    File.join(EXEMPLARS_TEST_DIR, "#{model_name}_exemplar.rb"),  # Object Daddy
    File.join(EXEMPLARS_SPEC_DIR, "#{model_name}_exemplar.rb"),  # Object Daddy
    File.join(BLUEPRINTS_DIR,     "#{model_name}_blueprint.rb"), # Machinist Blueprints
  ].each { |file| annotate_one_file(file, info) }

  FIXTURE_DIRS.each do |dir|
    fixture_file_name = File.join(dir,klass.table_name + ".yml")
    annotate_one_file(fixture_file_name, info, options.merge(:position=>(options[:position_in_fixture] || options[:position]))) if File.exist?(fixture_file_name)
  end
  annotated
end

.annotate_one_file(file_name, info_block, options = {}) ⇒ Object

Add a schema block to a file. If the file already contains a schema info block (a comment starting with “== Schema Information”), check if it matches the block that is already there. If so, leave it be. If not, remove the old info block and write a new one. Returns true or false depending on whether the file was modified.

Options (opts)

:position<Symbol>:: where to place the annotated section in fixture or model file,
                    "before" or "after". Default is "before".
:position_in_class<Symbol>:: where to place the annotated section in model file
:position_in_fixture<Symbol>:: where to place the annotated section in fixture file
:position_in_others<Symbol>:: where to place the annotated section in the rest of
                    supported files



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# File 'lib/annotate/annotate_models.rb', line 115

def annotate_one_file(file_name, info_block, options={})
  if File.exist?(file_name)
    old_content = File.read(file_name)

    # Ignore the Schema version line because it changes with each migration
    header = Regexp.new(/(^# Table name:.*?\n(#.*\n)*\n)/)
    old_header = old_content.match(header).to_s
    new_header = info_block.match(header).to_s

    if old_header == new_header
      false
    else
      # Remove old schema info
      old_content.sub!(/^# #{COMPAT_PREFIX}.*?\n(#.*\n)*\n/, '')

      # Write it back
      new_content = options[:position] == 'before' ?  (info_block + old_content) : (old_content + "\n" + info_block)

      File.open(file_name, "wb") { |f| f.puts new_content }
      true
    end
  end
end

.do_annotations(options = {}) ⇒ Object

We’re passed a name of things that might be ActiveRecord models. If we can find the class, and if its a subclass of ActiveRecord::Base, then pass it to the associated block



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# File 'lib/annotate/annotate_models.rb', line 216

def do_annotations(options={})
  if options[:require]
    options[:require].each do |path|
      require path
    end
  end

  header = PREFIX.dup

  if options[:include_version]
    version = ActiveRecord::Migrator.current_version rescue 0
    if version > 0
      header << "\n# Schema version: #{version}"
    end
  end

  if options[:model_dir]
    self.model_dir = options[:model_dir]
  end

  annotated = []
  get_model_files.each do |file|
    begin
      klass = get_model_class(file)
      if klass < ActiveRecord::Base && !klass.abstract_class?
        if annotate(klass, file, header,options)
          annotated << klass
        end
      end
    rescue Exception => e
      puts "Unable to annotate #{file}: #{e.message} (#{e.backtrace.first})"
    end
  end
  if annotated.empty?
    puts "Nothing annotated."
  else
    puts "Annotated (#{annotated.length}): #{annotated.join(', ')}"
  end
end

.get_index_info(klass) ⇒ Object 



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# File 'lib/annotate/annotate_models.rb', line 88

def get_index_info(klass)
  index_info = "#\n# Indexes\n#\n"

  indexes = klass.connection.indexes(klass.table_name)
  return "" if indexes.empty?

  max_size = indexes.collect{|index| index.name.size}.max + 1
  indexes.each do |index|
    index_info << sprintf("#  %-#{max_size}.#{max_size}s %s %s", index.name, "(#{index.columns.join(",")})", index.unique ? "UNIQUE" : "").rstrip + "\n"
  end
  return index_info
end

.get_model_class(file) ⇒ Object

Retrieve the classes belonging to the model names we’re asked to process Check for namespaced models in subdirectories as well as models in subdirectories without namespacing.



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# File 'lib/annotate/annotate_models.rb', line 201

def get_model_class(file)
  require File.expand_path("#{model_dir}/#{file}") # this is for non-rails projects, which don't get Rails auto-require magic
  model = file.gsub(/\.rb$/, '').camelize
  parts = model.split('::')
  begin
    parts.inject(Object) {|klass, part| klass.const_get(part) }
  rescue LoadError
    Object.const_get(parts.last)
  end
end

.get_model_files ⇒ Object

Return a list of the model files to annotate. If we have command line arguments, they’re assumed to be either the underscore or CamelCase versions of model names. Otherwise we take all the model files in the model_dir directory.



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# File 'lib/annotate/annotate_models.rb', line 186

def get_model_files
  models = ARGV.dup
  models.shift
  models.reject!{|m| m.starts_with?("position=")}
  if models.empty?
    Dir.chdir(model_dir) do
      models = Dir["**/*.rb"]
    end
  end
  models
end

.get_schema_info(klass, header, options = {}) ⇒ Object

Use the column information in an ActiveRecord class to create a comment block containing a line for each column. The line contains the column name, the type (and length), and any optional attributes



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# File 'lib/annotate/annotate_models.rb', line 43

def get_schema_info(klass, header, options = {})
  info = "# #{header}\n#\n"
  info << "# Table name: #{klass.table_name}\n#\n"

  max_size = klass.column_names.collect{|name| name.size}.max + 1
  klass.columns.each do |col|
    attrs = []
    attrs << "default(#{quote(col.default)})" unless col.default.nil?
    attrs << "not null" unless col.null
    attrs << "primary key" if col.name == klass.primary_key

    col_type = col.type.to_s
    if col_type == "decimal"
      col_type << "(#{col.precision}, #{col.scale})"
    else
      col_type << "(#{col.limit})" if col.limit
    end

    # Check out if we got a geometric column
    # and print the type and SRID
    if col.respond_to?(:geometry_type)
      attrs << "#{col.geometry_type}, #{col.srid}"
    end

    # Check if the column has indices and print "indexed" if true
    # If the indice include another colum, print it too.
    if options[:simple_indexes] # Check out if this column is indexed
      indices = klass.connection.indexes(klass.table_name)
      if indices = indices.select { |ind| ind.columns.include? col.name }
        indices.each do |ind|
          ind = ind.columns.reject! { |i| i == col.name }
          attrs << (ind.length == 0 ? "indexed" : "indexed => [#{ind.join(", ")}]")
        end
      end
    end
    info << sprintf("#  %-#{max_size}.#{max_size}s:%-15.15s %s", col.name, col_type, attrs.join(", ")).rstrip + "\n"
  end

  if options[:show_indexes]
    info << get_index_info(klass)
  end

  info << "#\n\n"
end

.model_dir ⇒ Object 



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# File 'lib/annotate/annotate_models.rb', line 17

def model_dir
  @model_dir || "app/models"
end

.model_dir=(dir) ⇒ Object 



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# File 'lib/annotate/annotate_models.rb', line 21

def model_dir=(dir)
  @model_dir = dir
end

.quote(value) ⇒ Object

Simple quoting for the default column value



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# File 'lib/annotate/annotate_models.rb', line 26

def quote(value)
  case value
    when NilClass                 then "NULL"
    when TrueClass                then "TRUE"
    when FalseClass               then "FALSE"
    when Float, Fixnum, Bignum    then value.to_s
    # BigDecimals need to be output in a non-normalized form and quoted.
    when BigDecimal               then value.to_s('F')
    else
      value.inspect
  end
end

.remove_annotation_of_file(file_name) ⇒ Object 



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# File 'lib/annotate/annotate_models.rb', line 139

def remove_annotation_of_file(file_name)
  if File.exist?(file_name)
    content = File.read(file_name)

    content.sub!(/^# #{COMPAT_PREFIX}.*?\n(#.*\n)*\n/, '')

    File.open(file_name, "wb") { |f| f.puts content }
  end
end

.remove_annotations(options = {}) ⇒ Object 



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# File 'lib/annotate/annotate_models.rb', line 256

def remove_annotations(options={})
  if options[:model_dir]
    puts "removing"
    self.model_dir = options[:model_dir]
  end
  deannotated = []
  get_model_files.each do |file|
    begin
      klass = get_model_class(file)
      if klass < ActiveRecord::Base && !klass.abstract_class?
        deannotated << klass

        model_file_name = File.join(model_dir, file)
        remove_annotation_of_file(model_file_name)

        FIXTURE_DIRS.each do |dir|
          fixture_file_name = File.join(dir,klass.table_name + ".yml")
          remove_annotation_of_file(fixture_file_name) if File.exist?(fixture_file_name)
        end
      end
    rescue Exception => e
      puts "Unable to annotate #{file}: #{e.message}"
    end
  end
  puts "Removed annotation from: #{deannotated.join(', ')}"
end