Class: Terrazine::Constructor

Inherits:
Object
  • Object
show all
Defined in:
lib/terrazine/constructor.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(structure = {}) ⇒ Constructor

Returns a new instance of Constructor.



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# File 'lib/terrazine/constructor.rb', line 4

def initialize(structure = {})
  @structure = structure
end

Instance Attribute Details

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/terrazine/constructor.rb', line 3

def params
  @params
end

#structure ⇒ Object (readonly)

Returns the value of attribute structure.



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# File 'lib/terrazine/constructor.rb', line 3

def structure
  @structure
end

Instance Method Details

#build_sql(options = {}) ⇒ Object

constructor.build_sql

> ‘SELECT .… FROM …’

> [‘SELECT .… FROM .… WHERE id = $1’, [22]]



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# File 'lib/terrazine/constructor.rb', line 113

def build_sql(options = {})
  Builder.new.get_sql @structure, options
end

#distinct(fields = true) ⇒ Object 



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# File 'lib/terrazine/constructor.rb', line 34

def distinct(fields = true)
  @structure[:distinct] = fields
  self
end

#distinct_select(structure, fields = true) ⇒ Object 



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# File 'lib/terrazine/constructor.rb', line 39

def distinct_select(structure, fields = true)
  @structure[:distinct] = fields
  select structure
  self
end

#from(structure) ⇒ Object

TODO: from construction from [:mrgl, :m] from [:_values, [1, 2], :rgl, [:zgl, :gl]]

> [[:mrgl, :m], [:_values, [1, 2], :rgl, [:zgl, :gl]]]



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# File 'lib/terrazine/constructor.rb', line 49

def from(structure)
  @structure[:from] = structure
  self
end

#join(structure) ⇒ Object

TODO: join constructor AND better syntax



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# File 'lib/terrazine/constructor.rb', line 55

def join(structure)
  @structure[:join] = structure
  self
end

#limit(per) ⇒ Object

TODO: default per used here and in builder…-_-



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# File 'lib/terrazine/constructor.rb', line 85

def limit(per)
  @structure[:limit] = (per || 8).to_i
  self
end

#merge(params) ⇒ Object

just rewrite data. TODO: merge with merge without loss of data? constructor.merge(select: :content, order_by: ‘f.id DESC’, limit: 1)



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# File 'lib/terrazine/constructor.rb', line 105

def merge(params)
  @structure.merge! params
  self
end

#offset(offset) ⇒ Object

same as limit =(



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# File 'lib/terrazine/constructor.rb', line 91

def offset(offset)
  @structure[:offset] = offset || 0
end

#order(structure) ⇒ Object

TODO: order constructor -_-



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# File 'lib/terrazine/constructor.rb', line 79

def order(structure)
  @structure[:order] = structure
  self
end

#paginate(params) ⇒ Object

TODO: serve - return count of all rows params - hash with keys :per, :page



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# File 'lib/terrazine/constructor.rb', line 97

def paginate(params)
  limit params[:per]
  offset((params.fetch(:page, 1).to_i - 1) * @structure[:limit])
  self
end

#select(structure) ⇒ Object 



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# File 'lib/terrazine/constructor.rb', line 29

def select(structure)
  @structure[:select] = structure_constructor(@structure[:select], structure)
  self
end

#structure_constructor(structure, modifier) ⇒ Object

TODO? join hash inside array? TODO!! join values of existing keys on hashes merge



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# File 'lib/terrazine/constructor.rb', line 10

def structure_constructor(structure, modifier)
  return modifier unless structure

  if structure.is_a?(Hash) && modifier.is_a?(Hash)
    modifier.each do |k, v|
      structure[k] = structure_constructor(structure[k], v)
    end
    structure
  else
    structure = structure.is_a?(Array) ? structure : [structure]
    if modifier.is_a?(Array)
      modifier.each { |i| structure_constructor structure, i }
    else
      structure << modifier
    end
    structure.uniq
  end
end

#where(structure) ⇒ Object 



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# File 'lib/terrazine/constructor.rb', line 60

def where(structure)
  w = @structure[:where]
  if w.is_a?(Array) && w.first.is_a?(Array)
    @structure[:where].push structure
  elsif w
    @structure[:where] = [w, structure]
  else
    @structure[:where] = structure
  end
  self
end

#with(structure) ⇒ Object

TODO: with constructor -_-



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# File 'lib/terrazine/constructor.rb', line 73

def with(structure)
  @structure[:with] = structure
  self
end