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PO"DataObjects::IntegrityError (ERROR: null value in column violates not-null constraint" error in rails 3
 

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  1. PO"DataObjects::IntegrityError (ERROR: null value in column violates not-null constraint" error in rails 3
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    <p>In my model I have</p> <pre><code> class Alias include DataMapper::Resource belongs_to :user property :id, String, :key =&gt; true, :required =&gt; true, :unique =&gt; true validates_format_of :id, :with =&gt; /[0-9a-z\-]/i </code></pre> <p>end</p> <p>In my controller:</p> <pre><code>def new @new_alias = @owner.aliases.new() end def create @owner = current_user @alias = @owner.aliases.create(params[:alias]) end </code></pre> <p>And in my view</p> <pre><code>&lt;%= form_for @new_alias, :url =&gt; {:controller =&gt; "aliases", :action=&gt;"create"} do |f| %&gt; &lt;%= f.text_field :id, :placeholder =&gt; "Account name" %&gt;&lt;/br&gt; &lt;%= f.submit :value =&gt; "Create" %&gt; &lt;% end %&gt; </code></pre> <p>For me it looks preatty normal, but when I'm trying to save new alias, it results with with:</p> <pre><code>ERROR: null value in column "alias_id" violates not-null constraint </code></pre> <blockquote> <p>Processing by AliasesController#create as HTML Parameters: {"utf8"=>"✓", "authenticity_token"=>"/token=", "alias"=>{"id"=>"IDNAME"}, "commit"=>"Create"} ~ SQL (0.632ms) SELECT "id", "encrypted_password", "remember_created_at", "reset_password_token", "reset_password_sent_at", "failed_attempts", "unlock_token", "locked_at", "sign_in_count", "current_sign_in_at", "last_sign_in_at", "current_sign_in_ip", "last_sign_in_ip", "username", "email", "name", "country" FROM "users" WHERE "id" IN (2) LIMIT 1 ~<br> SQL (0.491ms) SELECT "id" FROM "aliases" WHERE "id" = 'IDNAME' ORDER BY "id" LIMIT 1 Completed in 11ms ~ SQL (0.531ms) INSERT INTO "aliases" ("id", "user_id") VALUES ('IDNAME', 2) ~ ERROR: null value in column "alias_id" violates not-null constraint (code: 33575106, sql state: 23502, query: INSERT INTO "aliases" ("id", "user_id") VALUES ('IDNAME', 2), uri: postgres:name@localhost:5432postgres?adapter=postgres&amp;host=localhost&amp;port=5432&amp;username=name&amp;password=pass&amp;database=postgres&amp;path=postgres&amp;schema_search_path=public&amp;encoding=utf8&amp;template=template0)</p> <p>DataObjects::IntegrityError (ERROR: null value in column "alias_id" violates not-null constraint ):<br> app/controllers/aliases_controller.rb:5:in `create'</p> </blockquote> <p>What could be the problem? I'm using rails3, postgres and datamapper. </p>
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