Module: Squirm::Model

Includes:
ActiveModel::Naming
Defined in:
lib/squirm/model.rb,
lib/squirm/model/sample.rb,
lib/squirm/model/version.rb,
lib/squirm/model/method_definer.rb

Defined Under Namespace

Modules: InstanceMethods Classes: MethodDefiner, NotFound, Sample

Constant Summary collapse

VERSION = 
"0.0.0"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#__attributes ⇒ Object (readonly)

Returns the value of attribute __attributes.



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# File 'lib/squirm/model.rb', line 17

def __attributes
  @__attributes
end

#api ⇒ Object (readonly)

Returns the value of attribute api.



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# File 'lib/squirm/model.rb', line 16

def api
  @api
end

Class Method Details

.extended(base) ⇒ Object 



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# File 'lib/squirm/model.rb', line 19

def self.extended(base)
  base.class_eval do
    include ActiveModel::Conversion
    include InstanceMethods
  end
end

.finalize ⇒ Object

Invoke #finalize on all Squirm models.



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# File 'lib/squirm/model.rb', line 27

def self.finalize
  ObjectSpace.each_object(self) do |mod|
    mod.finalize
  end
end

Instance Method Details

#create(*args) ⇒ Object 



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# File 'lib/squirm/model.rb', line 78

def create(*args)
  get api.create[*args]
end

#delete(id) ⇒ Object 



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# File 'lib/squirm/model.rb', line 92

def delete(id)
  api.delete[id]
end

#finalize ⇒ Object

Invoke to load API. This allows classes to be set up before the API has been created, or the db connection established.



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# File 'lib/squirm/model.rb', line 35

def finalize
  return if defined? @api
  sql = Pathname(__FILE__).dirname.join("model/schema_functions.sql").read
  schema_name = model_name.to_s.downcase
  Squirm.exec(sql, [schema_name]) do |result|
    @api = OpenStruct.new Hash[result.map do |row| [
      row["name"].to_sym,
      Procedure.new(row["name"], :schema => schema_name).load
    ]
    end]
  end
end

#get(id) ⇒ Object 



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# File 'lib/squirm/model.rb', line 82

def get(id)
  api.get.call(id) do |result|
    raise NotFound if result.ntuples == 0
    hash = result.first
    instance = allocate
    instance.instance_variable_set :@__attributes, hash
    instance
  end
end

#sample(arg = nil, &block) ⇒ Object 



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# File 'lib/squirm/model.rb', line 48

def sample(arg = nil, &block)
  if block_given?
    @sample_block = block
    yield MethodDefiner.new(self)
  elsif !arg
    @sample ||= begin
      @sample = Sample.new
      @sample_block.call(@sample)
      @sample
    end
  else
    sample = Sample.new
    @sample_block.call(sample)
    sample.each do |key, value|
      setter = :"#{key}="
      arg.send(setter, value) if arg.respond_to?(setter)
    end
    return arg
  end
end

#to_ddl ⇒ Object 



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# File 'lib/squirm/model.rb', line 69

def to_ddl
  buffer = []
  table = Squirm::Migrator::Table.new(name.downcase)
  table.add_column(*sample.keys)
  buffer << table.template.render
  table.api.each {|template| buffer << template.render}
  buffer.map(&:strip).join("\n\n")
end