169 lines
5.8 KiB
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169 lines
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<h1 id="title-xs"><a href="../index.html">The Common Lisp Cookbook</a> – A "defmodel" macro</h1>
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<pre><code class="language-lisp">(defmacro defmodel (name slot-definitions)
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`(progn
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(defclass ,name ()
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((id :col-type serial :reader ,(symb name 'id))
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,@slot-definitions)
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(:metaclass dao-class)
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(:keys id))
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(with-connection (db-params)
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(unless (table-exists-p ',name)
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(execute (dao-table-definition ',name))))
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;; Create
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(defmacro ,(symb name 'create) (&rest args)
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`(with-connection (db-params)
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(make-dao ',',name ,@args)))
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;; Read
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(defun ,(symb name 'get-all) ()
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(with-connection (db-params)
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(select-dao ',name)))
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(defun ,(symb name 'get) (id)
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(with-connection (db-params)
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(get-dao ',name id)))
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(defmacro ,(symb name 'select) (sql-test &optional sort)
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`(with-connection (db-params)
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(select-dao ',',name ,sql-test ,sort)))
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;; Update
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(defun ,(symb name 'update) (,name)
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(with-connection (db-params)
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(update-dao ,name)))
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;; Delete
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(defun ,(symb name 'delete) (,name)
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(with-connection (db-params)
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(delete-dao ,name)))))
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</code></pre>
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<p class="page-source">
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Page source: <a href="https://github.com/LispCookbook/cl-cookbook/blob/master/drafts/defmodel.lisp.md">drafts/defmodel.lisp.md</a>
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