method
build
v7.1.3.2 -
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- Class:
ActiveRecord::Persistence::ClassMethods
build(attributes = nil, &block)public
Builds an object (or multiple objects) and returns either the built object or a list of built objects.
The attributes parameter can be either a Hash or an Array of Hashes. These Hashes describe the attributes on the objects that are to be built.
Examples
# Build a single new object User.build(first_name: 'Jamie') # Build an Array of new objects User.build([{ first_name: 'Jamie' }, { first_name: 'Jeremy' }]) # Build a single object and pass it into a block to set other attributes. User.build(first_name: 'Jamie') do |u| u.is_admin = false end # Building an Array of new objects using a block, where the block is executed for each object: User.build([{ first_name: 'Jamie' }, { first_name: 'Jeremy' }]) do |u| u.is_admin = false end