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class <%= migration_class_name %> < ActiveRecord::Migration
<%- if migration_action == 'add' -%>
def change
<% attributes.each do |attribute| -%>
<%- if attribute.reference? -%>
add_reference :<%= table_name %>, :<%= attribute.name %><%= attribute.inject_options %>
<%- else -%>
add_column :<%= table_name %>, :<%= attribute.name %>, :<%= attribute.type %><%= attribute.inject_options %>
<%- if attribute.has_index? -%>
add_index :<%= table_name %>, :<%= attribute.index_name %><%= attribute.inject_index_options %>
<%- end -%>
<%- end -%>
<%- end -%>
end
<%- else -%>
def up
<% attributes.each do |attribute| -%>
<%- if migration_action -%>
<%- if attribute.reference? -%>
remove_reference :<%= table_name %>, :<%= attribute.name %><%= ', polymorphic: true' if attribute.polymorphic? %>
<%- else -%>
remove_column :<%= table_name %>, :<%= attribute.name %>
<%- end -%>
<%- end -%>
<%- end -%>
end
def down
<% attributes.reverse.each do |attribute| -%>
<%- if migration_action -%>
<%- if attribute.reference? -%>
add_reference :<%= table_name %>, :<%= attribute.name %><%= attribute.inject_options %>
<%- else -%>
add_column :<%= table_name %>, :<%= attribute.name %>, :<%= attribute.type %><%= attribute.inject_options %>
<%- if attribute.has_index? -%>
add_index :<%= table_name %>, :<%= attribute.index_name %><%= attribute.inject_index_options %>
<%- end -%>
<%- end -%>
<%- end -%>
<%- end -%>
end
<%- end -%>
end
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