ActiveRecord::SpawnMethods

     # File lib/active_record/relation/spawn_methods.rb, line 103
103:     def apply_finder_options(options)
104:       relation = clone
105:       return relation unless options
106: 
107:       options.assert_valid_keys(VALID_FIND_OPTIONS)
108:       finders = options.dup
109:       finders.delete_if { |key, value| value.nil? }
110: 
111:       ([:joins, :select, :group, :order, :having, :limit, :offset, :from, :lock, :readonly] & finders.keys).each do |finder|
112:         relation = relation.send(finder, finders[finder])
113:       end
114: 
115:       relation = relation.where(finders[:conditions]) if options.has_key?(:conditions)
116:       relation = relation.includes(finders[:include]) if options.has_key?(:include)
117:       relation = relation.extending(finders[:extend]) if options.has_key?(:extend)
118: 
119:       relation
120:     end

    # File lib/active_record/relation/spawn_methods.rb, line 72
72:     def except(*skips)
73:       result = self.class.new(@klass, table)
74: 
75:       ((Relation::ASSOCIATION_METHODS + Relation::MULTI_VALUE_METHODS) - skips).each do |method|
76:         result.send(:"#{method}_values=", send(:"#{method}_values"))
77:       end
78: 
79:       (Relation::SINGLE_VALUE_METHODS - skips).each do |method|
80:         result.send(:"#{method}_value=", send(:"#{method}_value"))
81:       end
82: 
83:       result
84:     end

    # File lib/active_record/relation/spawn_methods.rb, line 5
 5:     def merge(r)
 6:       merged_relation = clone
 7:       return merged_relation unless r
 8:       return to_a & r if r.is_a?(Array)
 9: 
10:       Relation::ASSOCIATION_METHODS.each do |method|
11:         value = r.send(:"#{method}_values")
12: 
13:         unless value.empty?
14:           if method == :includes
15:             merged_relation = merged_relation.includes(value)
16:           else
17:             merged_relation.send(:"#{method}_values=", value)
18:           end
19:         end
20:       end
21: 
22:       (Relation::MULTI_VALUE_METHODS - [:joins, :where, :order]).each do |method|
23:         value = r.send(:"#{method}_values")
24:         merged_relation.send(:"#{method}_values=", merged_relation.send(:"#{method}_values") + value) if value.present?
25:       end
26: 
27:       order_value = r.order_values
28:       if order_value.present?
29:         if r.reorder_flag
30:           merged_relation.order_values = order_value
31:         else
32:           merged_relation.order_values = merged_relation.order_values + order_value
33:         end
34:       end
35: 
36:       merged_relation = merged_relation.joins(r.joins_values)
37: 
38:       merged_wheres = @where_values + r.where_values
39: 
40:       unless @where_values.empty?
41:         # Remove duplicates, last one wins.
42:         seen = Hash.new { |h,table| h[table] = {} }
43:         merged_wheres = merged_wheres.reverse.reject { |w|
44:           nuke = false
45:           if w.respond_to?(:operator) && w.operator == :==
46:             name              = w.left.name
47:             table             = w.left.relation.name
48:             nuke              = seen[table][name]
49:             seen[table][name] = true
50:           end
51:           nuke
52:         }.reverse
53:       end
54: 
55:       merged_relation.where_values = merged_wheres
56: 
57:       Relation::SINGLE_VALUE_METHODS.reject {|m| m == :lock}.each do |method|
58:         value = r.send(:"#{method}_value")
59:         merged_relation.send(:"#{method}_value=", value) unless value.nil?
60:       end
61: 
62:       merged_relation.lock_value = r.lock_value unless merged_relation.lock_value
63: 
64:       # Apply scope extension modules
65:       merged_relation.send :apply_modules, r.extensions
66: 
67:       merged_relation
68:     end

    # File lib/active_record/relation/spawn_methods.rb, line 86
86:     def only(*onlies)
87:       result = self.class.new(@klass, table)
88: 
89:       ((Relation::ASSOCIATION_METHODS + Relation::MULTI_VALUE_METHODS) & onlies).each do |method|
90:         result.send(:"#{method}_values=", send(:"#{method}_values"))
91:       end
92: 
93:       (Relation::SINGLE_VALUE_METHODS & onlies).each do |method|
94:         result.send(:"#{method}_value=", send(:"#{method}_value"))
95:       end
96: 
97:       result
98:     end