Document Arel.sql
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@ -24,22 +24,29 @@
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require "arel/delete_manager"
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require "arel/nodes"
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module Arel # :nodoc: all
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module Arel
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VERSION = "10.0.0"
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# Wrap a known-safe SQL string for passing to query methods, e.g.
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#
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# Post.order(Arel.sql("length(title)")).last
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#
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# Great caution should be taken to avoid SQL injection vulnerabilities.
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# This method should not be used with unsafe values such as request
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# parameters or model attributes.
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def self.sql(raw_sql)
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Arel::Nodes::SqlLiteral.new raw_sql
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end
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def self.star
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def self.star # :nodoc:
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sql "*"
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end
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def self.arel_node?(value)
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def self.arel_node?(value) # :nodoc:
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value.is_a?(Arel::Node) || value.is_a?(Arel::Attribute) || value.is_a?(Arel::Nodes::SqlLiteral)
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end
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def self.fetch_attribute(value)
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def self.fetch_attribute(value) # :nodoc:
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case value
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when Arel::Nodes::Between, Arel::Nodes::In, Arel::Nodes::NotIn, Arel::Nodes::Equality, Arel::Nodes::NotEqual, Arel::Nodes::LessThan, Arel::Nodes::LessThanOrEqual, Arel::Nodes::GreaterThan, Arel::Nodes::GreaterThanOrEqual
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yield value.left.is_a?(Arel::Attributes::Attribute) ? value.left : value.right
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@ -47,5 +54,5 @@ def self.fetch_attribute(value)
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end
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## Convenience Alias
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Node = Arel::Nodes::Node
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Node = Arel::Nodes::Node # :nodoc:
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end
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@ -18,6 +18,7 @@ class Task < RDoc::Task
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include: %w(
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README.rdoc
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lib/active_record/**/*.rb
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lib/arel.rb
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)
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},
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