我在Mongoose上定义了这个模式模型:
var mongoose = require("mongoose");
var IngredientSchema = new mongoose.Schema({
name:String,
number:Number,
exist:Boolean,
photoName:String
})
module.exports = mongoose.model("Ingredient", IngredientSchema);
我希望在网页上显示不同的结果,具体取决于是否已在数据库中创建了成分。
这是我到目前为止所尝试的内容(但它不起作用):
<!-- Check if inventory is empty or not, and display accordingly -->
<% if ( ! ingredients) { %>
<p>Add you first ingredient to the inventory !!</p>
<% } else { %>
<% ingredients.forEach(function(ingredient) { %>
...
...
这是我的路线:
// Index route
app.get("/inventory", function(req, res) {
Ingredient.find({}, function(err, allIngredients) {
if (err) {
console.log(err);
} else {
res.render("inventory", { ingredients:allIngredients });
}
})
})
非常感谢你的帮助。
答案 0 :(得分:0)
只需检查成分阵列的长度:
<!-- Check if inventory is empty or not, and display accordingly -->
<% if (!ingredients.length) { %>
<p>Add you first ingredient to the inventory !!</p>
<% } else { %>
<% ingredients.forEach(function(ingredient) { %>
...
...