Module: Arel::FactoryMethods
- Included in:
- Nodes::Node, Table, TreeManager
- Defined in:
- activerecord/lib/arel/factory_methods.rb
Overview
Methods for creating various nodes
Instance Method Summary collapse
- #coalesce(*exprs) ⇒ Object
- #create_and(clauses) ⇒ Object
- #create_false ⇒ Object
- #create_join(to, constraint = nil, klass = Nodes::InnerJoin) ⇒ Object
- #create_on(expr) ⇒ Object
- #create_string_join(to) ⇒ Object
- #create_table_alias(relation, name) ⇒ Object
- #create_true ⇒ Object
- #grouping(expr) ⇒ Object
-
#lower(column) ⇒ Object
Create a LOWER() function.
Instance Method Details
#coalesce(*exprs) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 45 def coalesce(*exprs) Nodes::NamedFunction.new "COALESCE", exprs end |
#create_and(clauses) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 27 def create_and(clauses) Nodes::And.new clauses end |
#create_false ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 11 def create_false Arel::Nodes::False.new end |
#create_join(to, constraint = nil, klass = Nodes::InnerJoin) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 19 def create_join(to, constraint = nil, klass = Nodes::InnerJoin) klass.new(to, constraint) end |
#create_on(expr) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 31 def create_on(expr) Nodes::On.new expr end |
#create_string_join(to) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 23 def create_string_join(to) create_join to, nil, Nodes::StringJoin end |
#create_table_alias(relation, name) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 15 def create_table_alias(relation, name) Nodes::TableAlias.new(relation, name) end |
#create_true ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 7 def create_true Arel::Nodes::True.new end |
#grouping(expr) ⇒ Object
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# File 'activerecord/lib/arel/factory_methods.rb', line 35 def grouping(expr) Nodes::Grouping.new expr end |
#lower(column) ⇒ Object
Create a LOWER() function
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# File 'activerecord/lib/arel/factory_methods.rb', line 41 def lower(column) Nodes::NamedFunction.new "LOWER", [Nodes.build_quoted(column)] end |