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March 25, 2015 07:01
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node-orm2 一對多的例子
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| // db 是用 orm.connect({protocol: "mysql", ....}, function(err, db) {}); 的 callback 所帶出的。 | |
| var Category = db.define('category', { | |
| name: { type: 'text', required: true}, | |
| }, {} | |
| }); | |
| var Food = db.define('food', { | |
| name: { type: 'text', required: true}, | |
| price: { type: 'number', required: true}, | |
| }, {} | |
| }); | |
| // one to many. | |
| Food.hasOne("category", Category, {reverse: 'foods'}); | |
| // create | |
| Category.create({ name: "general"}, function(err, category) { | |
| if(err) { console.log(err); return; } | |
| console.log(category); // 已經建立好的 category | |
| Food.create({ name: "meet", category_id: category.id, price: 1000}, function(err, food) { | |
| if(err) { console.log(err); return; } | |
| console.log(food); // 已經建立好的 food | |
| }); | |
| }); | |
| // query | |
| Category.get(1, function(err, category) { | |
| console.log(category); | |
| console.log(category.getFoods()); | |
| }); |
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