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In addition to defining the association, a `required` association will also have its presence validated. Before: ```ruby belongs_to :account validates_presence_of :account ``` After: ```ruby belongs_to :account, required: true ``` This helps to draw a distinction between types of validations, since validations on associations are generally for data integrity purposes, and aren't usually set through form inputs.
82 lines
2 KiB
Ruby
82 lines
2 KiB
Ruby
require "cases/helper"
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class RequiredAssociationsTest < ActiveRecord::TestCase
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self.use_transactional_fixtures = false
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class Parent < ActiveRecord::Base
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end
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class Child < ActiveRecord::Base
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end
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setup do
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@connection = ActiveRecord::Base.connection
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@connection.create_table :parents, force: true
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@connection.create_table :children, force: true do |t|
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t.belongs_to :parent
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end
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end
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teardown do
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@connection.execute("DROP TABLE IF EXISTS parents")
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@connection.execute("DROP TABLE IF EXISTS children")
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end
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test "belongs_to associations are not required by default" do
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model = subclass_of(Child) do
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belongs_to :parent, inverse_of: false,
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class_name: "RequiredAssociationsTest::Parent"
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end
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assert model.new.save
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assert model.new(parent: Parent.new).save
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end
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test "required belongs_to associations have presence validated" do
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model = subclass_of(Child) do
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belongs_to :parent, required: true, inverse_of: false,
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class_name: "RequiredAssociationsTest::Parent"
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end
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record = model.new
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assert_not record.save
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assert_equal ["Parent can't be blank"], record.errors.full_messages
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record.parent = Parent.new
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assert record.save
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end
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test "has_one associations are not required by default" do
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model = subclass_of(Parent) do
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has_one :child, inverse_of: false,
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class_name: "RequiredAssociationsTest::Child"
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end
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assert model.new.save
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assert model.new(child: Child.new).save
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end
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test "required has_one associations have presence validated" do
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model = subclass_of(Parent) do
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has_one :child, required: true, inverse_of: false,
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class_name: "RequiredAssociationsTest::Child"
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end
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record = model.new
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assert_not record.save
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assert_equal ["Child can't be blank"], record.errors.full_messages
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record.child = Child.new
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assert record.save
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end
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private
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def subclass_of(klass, &block)
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subclass = Class.new(klass, &block)
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def subclass.name
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superclass.name
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end
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subclass
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end
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end
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