StackOverflow2013

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plurals

PO
primarykey
Id
16040967
data
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0
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0
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0
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CreationDate
2013-04-16T15:25:26.920
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2013-09-01T11:01:15.740
LastEditDate
2013-09-01T11:01:15.740
LastEditorUserId
1268771
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1268771
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7976358
PostTypeId
2
Score
3
ViewCount
0
LastEditorDisplayName
text
Body
I've hit the same problem looking for an activerecord alternative to mongoid's <code>#any_of</code>. @jswanner answer is good, but will only work if the where parameters are a Hash : <pre><code>> User.where( email: 'foo', first_name: 'bar' ).where_values.reduce( :and ).method( :or ) => #<Method: Arel::Nodes::And(Arel::Nodes::Node)#or> > User.where( "email = 'foo' and first_name = 'bar'" ).where_values.reduce( :and ).method( :or ) NameError: undefined method `or' for class `String' </code></pre> To be able to use both strings and hashes, you can use this : <pre><code>q1 = User.where( "email = 'foo'" ) q2 = User.where( email: 'bar' ) User.where( q1.arel.constraints.reduce( :and ).or( q2.arel.constraints.reduce( :and ) ) ) </code></pre> Indeed, that's ugly, and you don't want to use that on a daily basis. Here is some <code>#any_of</code> implementation I've made : <a href="https://gist.github.com/oelmekki/5396826" rel="nofollow">https://gist.github.com/oelmekki/5396826</a> It let do that : <pre><code>> q1 = User.where( email: 'foo1' ); true => true > q2 = User.where( "email = 'bar1'" ); true => true > User.any_of( q1, q2, { email: 'foo2' }, "email = 'bar2'" ) User Load (1.2ms) SELECT "users".* FROM "users" WHERE (((("users"."email" = 'foo1' OR (email = 'bar1')) OR "users"."email" = 'foo2') OR (email = 'bar2'))) </code></pre> Edit : since then, I've published <a href="https://github.com/oelmekki/activerecord_any_of" rel="nofollow">a gem to help building OR queries</a>.
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1. POActiveRecord Arel OR condition
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1. USOlivier El Mekki
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1. USOlivier El Mekki
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