Module: Phoenix::Common::ClassMethods

Defined in:
lib/phoenix/common.rb

Instance Method Summary collapse

Instance Method Details

#all ⇒ Object 



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# File 'lib/phoenix/common.rb', line 85

def all
  sql = "SELECT * FROM #{self.table_name}"
  Phoenix::Rjb.execute(sql)
end

#associate_table_name(klass) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 56

def associate_table_name(klass)
  case klass
  when "Base"
    "BASE"
  else
    klass.tableize.singularize
  end
end

#belongs_to(t) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 141

def belongs_to(t)
  self.class_eval do
    define_method t do
      key = "#{t.upcase}_ID"
      sql = %(SELECT * FROM #{t.upcase} WHERE APP_ID = '#{self.APP_ID}' AND #{key} = '#{self.send(key)}')
      digest = Digest::MD5.hexdigest(sql)
      Datacraft::Cache.get digest do
        arr = Phoenix::Rjb.execute(sql)
        arr.first
      end
    end
  end
end

#build(h) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 137

def build(h)
  self.new(h)
end

#find(id) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 65

def find(id)
  column = "#{self.to_s}_ID"
  unless self.is_int_column?(column)
    id = self.quote(id)
  end
  
  sql = "SELECT * FROM #{self.to_s} WHERE #{column} = #{id}"

  digest = Digest::MD5.hexdigest(sql)

  Datacraft::Cache.get digest do
    arr = Phoenix::Rjb.execute(sql)  
    arr.first
  end
end

#find_by_sql(sql) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 81

def find_by_sql(sql)
  Phoenix::Rjb.execute(sql)
end

#first ⇒ Object 



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# File 'lib/phoenix/common.rb', line 13

def first
  sql = "select * from #{self.table_name} limit 1"
  Phoenix::Rjb.execute(sql)[0]
end

#has_many(*args) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 155

def has_many(*args)
  t = args[0].to_s
  options = args.extract_options!
  self.class_eval do
    define_method t do
      if options[:through]
        key = "#{self.class.to_s.upcase}_ID"
        assoite_sql = %(SELECT * FROM #{options[:through]} WHERE APP_ID = '#{self.APP_ID}' AND #{key} = '#{self.send(key)}')
        assoite_rs = Phoenix::Rjb.execute(assoite_sql)
        assoite_key = "#{t.singularize.upcase}_ID"
        ids = assoite_rs.collect { |ass| ass.send("#{assoite_key}") }
        if ids.present?
          sql = %(SELECT * FROM #{t.singularize} WHERE APP_ID = '#{self.APP_ID}' AND #{assoite_key} IN (#{ids.map { |_v| self.class.quote(_v) }.join(',')}))
          Phoenix::Rjb.execute(sql)
        else
          []
        end
      else
        # table = "#{t[0..-2]}"
        table = self.class.associate_table_name(t.singularize)
        key = "#{self.class.to_s.upcase}_ID"
        v = self.send(key)
        unless self.class.is_int_column?(key)
          v = self.class.quote(v)
        end
        sql = %(SELECT * FROM #{table} WHERE #{key} = #{v})
        Phoenix::Rjb.execute(sql)
      end
    end
  end
end

#in_cond(arr) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 29

def in_cond(arr)
  arr.map { |_v| self.quote(_v) }.join(',')
end

#is_int_column?(column) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/phoenix/common.rb', line 33

def is_int_column?(column)
  meta = self.class_variable_get("@@meta_data")
  if meta.blank?
    table_name = self.table_name
    meta = Phoenix::Rjb.get_meta_data(table_name)
    self.class_variable_set("@@meta_data", meta)
  end
  type = meta.select { |ele| ele[:column_name] == column.to_s.upcase }.first[:column_type]
  if type =~ /int|long/i
    return true
  end
  return false
end

#quote(s) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 23

def quote(s)
  return s if s.blank?
  return s if s.is_a? Integer
  "'#{s.gsub(/\\/, '\&\&').gsub(/'/, "''")}'"
end

#select(*fields) ⇒ Object 



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# File 'lib/phoenix/common.rb', line 18

def select(*fields)
  sql = "SELECT #{fields.join(', ')} FROM #{table_name}"
  Phoenix::Rjb.execute(sql)
end

#table_name ⇒ Object 



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# File 'lib/phoenix/common.rb', line 47

def table_name
  last_3_letter = self.to_s[-3..-1]
  if last_3_letter.downcase == 'new'
    return self.to_s.tableize.singularize.upcase[0..-2]
  else
    return self.to_s.tableize.singularize.upcase
  end
end

#where(*args) ⇒ Object

组装 sql Hash

Model.where(field1: value1, field2: value2)

String

Model.where('field1 = value1 AND field2 = value2')

Blank

Model.where() / Model.where('')



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# File 'lib/phoenix/common.rb', line 98

def where(*args)
  table_name = self.table_name
  if args.all? { |ele| ele.blank? }
    sql = %(SELECT * FROM #{table_name})
    return Relation.new(sql)
  end
  if args.size < 2 and args[0].is_a? String
    sql = %(SELECT * FROM #{table_name} WHERE #{args[0]})
    return Relation.new(sql)
  end
  options = args.extract_options!
  cond = ""
  options.each_with_index do |(k,v), index|
    if index > 0
      if v.is_a? Array
        cond << " AND #{k} IN " + " (#{v.map { |_v| self.quote(_v) }.join(',')})"
      else
        if self.is_int_column? k
          cond << " AND #{k} = #{v} "
        else
          cond << " AND #{k} = '#{v}' "
        end
      end
    else
      if v.is_a? Array
        cond << " #{k} IN " + " (#{v.map { |_v| self.quote(_v) }.join(',')})"
      else
        if self.is_int_column?(k)
          cond << " #{k} = #{v} "
        else
          cond << " #{k} = '#{v}' "
        end
      end
    end
  end
  sql = %(SELECT * FROM #{table_name} WHERE #{cond})
  Relation.new(sql)
end