class

Luna::Relation(T)

Inherits Reference < Object

Constructors

Instance methods

all
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avg(column : String, as : TNum.class) : TNum | Nil forall TNum
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count(column : String = "*", distinct : Bool = false) : Int64
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exists?
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first
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includes(*incs : Symbol)
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includes

keywords only (THIS fixes includes(posts: :comments))

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includes(*incs : Symbol, **nested)

both

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inner_join(table : String, on : String, table_alias : String | Nil = nil)
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inner_join(table : String, on : String, *params : DB::Any, table_alias : String | Nil = nil)

Join DSL

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left_join(table : String, on : String, table_alias : String | Nil = nil)
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left_join(table : String, on : String, *params : DB::Any, table_alias : String | Nil = nil)
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limit(n : Int32)
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max(column : String, as : TVal.class) : TVal | Nil forall TVal
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min(column : String, as : TVal.class) : TVal | Nil forall TVal
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offset(n : Int32)
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order(*cols : String)
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pluck(column : String, as : TVal.class) : Array(TVal) forall TVal

Single-column pluck with static type

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select(*cols : String)

Projection / order / paging (proxy)

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sum(column : String, as : TNum.class) : TNum | Nil forall TNum

Numeric aggregates (typed)

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to_a
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to_sql
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where(filters : Hash(Symbol, DB::Any))
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where(filters : NamedTuple)
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where(cond : String, *params : DB::Any)

WHERE variants

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where_in(column : String, vals : Array(DB::Any))
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