19 lines
305 B
Ruby
19 lines
305 B
Ruby
# frozen_string_literal: true
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class Tag < ApplicationRecord
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has_many :exercise_tags
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has_many :exercises, through: :exercise_tags
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validates :name, uniqueness: true
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before_destroy :can_be_destroyed?, prepend: true
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def can_be_destroyed?
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exercises.none?
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end
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def to_s
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name
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end
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end
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