Module: Arel
- Defined in:
- lib/arel_extensions/nodes/select.rb,
lib/arel_extensions.rb
Defined Under Namespace
Modules: Nodes
Classes: InsertManager, SelectManager, Table
Class Method Summary
collapse
Class Method Details
.column_of(table_name, column_name) ⇒ Object
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# File 'lib/arel_extensions.rb', line 97
def self.column_of table_name, column_name
ArelExtensions.column_of(table_name, column_name)
end
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.duration(s, expr) ⇒ Object
.false ⇒ Object
The FALSE pseudo literal.
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# File 'lib/arel_extensions.rb', line 106
def self.false
Arel::Nodes::Equality.new(1, 0)
end
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.grouping(*v) ⇒ Object
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# File 'lib/arel_extensions.rb', line 110
def self.grouping *v
Arel::Nodes::Grouping.new(*v)
end
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.json(*expr) ⇒ Object
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# File 'lib/arel_extensions.rb', line 114
def self.json *expr
ArelExtensions::Nodes::Json.new(
if expr.length == 1
expr.first
else
expr
end
)
end
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.null ⇒ Object
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# File 'lib/arel_extensions.rb', line 125
def self.null
Arel.quoted(nil)
end
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.quoted(*args) ⇒ Object
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# File 'lib/arel_extensions.rb', line 129
def self.quoted *args
Arel::Nodes.build_quoted(*args)
end
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.rollup(*args) ⇒ Object
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# File 'lib/arel_extensions.rb', line 137
def self.rollup(*args)
Arel::Nodes::RollUp.new(args)
end
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.shorten(s) ⇒ Object
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# File 'lib/arel_extensions.rb', line 141
def self.shorten s
Base64.urlsafe_encode64(Digest::MD5.new.digest(s)).tr('=', '').tr('-', '_')
end
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.true ⇒ Object
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# File 'lib/arel_extensions.rb', line 146
def self.true
Arel::Nodes::Equality.new(1, 1)
end
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.tuple(*v) ⇒ Object
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# File 'lib/arel_extensions.rb', line 150
def self.tuple *v
tmp = Arel.grouping(nil)
Arel.grouping v.map{|e| tmp.convert_to_node(e)}
end
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.when(condition) ⇒ Object