module Avram::Queryable(T)

Included Modules

• Enumerable(T)

Defined in:

Instance Method Summary

• #add_preload(&block : Array(T) -> Nil)
• #any? : Bool

  Returns true if at least one of the collection's members is truthy.

• #cache_key(operation : Symbol) : String
• #cache_key : String
• #cache_store
• #database(*args, **options)
• #database(*args, **options, &)
• #delete : Int64

  Delete the records using the query's where clauses, or all records if no wheres are added.

• #distinct : self
• #distinct_on(&) : self
• #each(&)

  Must yield this collection's elements to the block.

• #exec_scalar(&)
• #first

  Returns the first element in the collection.

• #first?

  Returns the first element in the collection.

• #group(&) : self
• #group_count : Hash(Array(PGValue), Int64)
• #join(join_clause : Avram::Join::SqlClause) : self
• #last
• #last?
• #limit(amount) : self
• #merge_query(query_to_merge : Avram::QueryBuilder) : self
• #none : self
• #none? : Bool

  Returns true if all of the elements of the collection are falsey.

• #offset(amount) : self
• #or(&) : self

  Run the #or block first to grab the last WHERE clause and set its conjunction to OR.

• #order_by(column, direction) : self
• #order_by(order : Avram::OrderByClause) : self
• #preloads
• #primary_key_name(*args, **options)
• #primary_key_name(*args, **options, &)
• #query : Avram::QueryBuilder
• #query=(query : Avram::QueryBuilder)
• #random_order : self
• #reset_limit : self
• #reset_offset : self
• #reset_order : self
• #reset_where(&) : self
• #results : Array(T)
• #schema_class : T.class
• #select_count : Int64
• #table_name(*args, **options)
• #table_name(*args, **options, &)
• #to_prepared_sql
• #to_sql
• #update : Int64

  Update the records using the query's where clauses, or all records if no wheres are added.

• #where(column : Symbol, value) : self
• #where(sql_clause : Avram::Where::SqlClause) : self
• #where(statement : String, *bind_vars) : self
• #where(statement : String, *, args bind_vars : Array) : self
• #where(&) : self

Instance Method Detail

[nil, true, 99].any? # => true
[nil, false].any?    # => false

# DELETE FROM users WHERE age < 21
UserQuery.new.age.lt(21).delete

([1, 2, 3]).first   # => 1
([] of Int32).first # raises Enumerable::EmptyError

([1, 2, 3]).first?   # => 1
([] of Int32).first? # => nil

[nil, false].none?       # => true
[nil, false, true].none? # => false

# Update all comments with the word "spam" as spam
CommentQuery.new.body.ilike("spam").update(spam: true)