Class: Lolita::Configuration::Columns

Inherits:
Object
  • Object
show all
Includes:
Enumerable, Builder, ObservedArray
Defined in:
lib/lolita/configuration/columns.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Builder

#build, #builder, #builder=, #builder_default_name, #builder_default_options, #builder_default_state

Methods included from ObservedArray

#<<, #[]=, #insert, #method_missing, #push

Constructor Details

#initialize(dbi, *args, &block) ⇒ Columns

Returns a new instance of Columns.



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# File 'lib/lolita/configuration/columns.rb', line 12

def initialize(dbi, *args, &block)
  @dbi=dbi
  @columns=[]
  @generated_yet = (block_given? || (args && args.any?))
  set_attributes(*args)
  self.instance_eval(&block) if block_given?
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Lolita::ObservedArray

Instance Attribute Details

#dbi ⇒ Object (readonly)

Returns the value of attribute dbi.



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# File 'lib/lolita/configuration/columns.rb', line 9

def dbi
  @dbi
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/lolita/configuration/columns.rb', line 10

def parent
  @parent
end

Instance Method Details

#by_name(name) ⇒ Object

Find first column by name



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# File 'lib/lolita/configuration/columns.rb', line 27

def by_name(name)
  name = name.to_sym
  self.detect do |column|
    column.name == name
  end
end

#column(*args, &block) ⇒ Object

Add column to columns Array. Receive attributes for column as Hash and/or block.



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# File 'lib/lolita/configuration/columns.rb', line 21

def column *args, &block
  @columns << build_element(*args,&block)
  @columns.last
end

#each ⇒ Object 



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# File 'lib/lolita/configuration/columns.rb', line 34

def each
  self.populate
  @columns.each_with_index{|column,index|
    if column.is_a?(Lolita::Configuration::Column)
      yield column
    else
      raise "Any column must be Lolita::Configuratin::Column object instead of #{column.class}."
    end
  }
end

#generate! ⇒ Object 



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# File 'lib/lolita/configuration/columns.rb', line 46

def generate!
  @generated_yet = true
  @columns.clear
  @dbi.fields.each_with_index{|field,index|
    unless field.technical?
      column(field)
    end
  }
end

#populate ⇒ Object 



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# File 'lib/lolita/configuration/columns.rb', line 56

def populate
  self.generate! if @columns.empty? && !@generated_yet
end