此问题来自:Post Array to firebase Database in Swift
我正在尝试将一些ingredients
保存到recipe
中,之后可以使用其中的成分检索整个食谱。在查看上面的问题和此博客文章https://firebase.googleblog.com/2014/04/best-practices-arrays-in-firebase.html之后。我能够重新构建我的数据库
这是我的成分词典:
{
"IngredientDict": {
"-KkbWdomTYdpgEDLjC9w": "Eggs",
"-KkbWvaa5DT1PY7q7jIs": "Spaghetti",
"-KkbaDQ8wYJxR3O2OwKd": "Parmesan"
// More possible ingredients
}
}
这是我的成分数据:
{
"IngredientData": {
"ingredients": {
"-KkbWdomTYdpgEDLjC9w": {
"name": "Eggs",
"uid": "-KkbWdomTYdpgEDLjC9w"
},
"-KkbWvaa5DT1PY7q7jIs": {
"name": "Spaghetti",
"uid": "-KkbWvaa5DT1PY7q7jIs"
},
"-KkbaDQ8wYJxR3O2OwKd": {
"name": "Parmesan",
"uid": "-KkY90e7dAgefc8zH3_F"
// More possible ingredients
}
}
}
}
我现在想在一个动作中将这些成分添加到我的食谱中。这就是我目前制作食谱的方式:
@IBAction func addRecipe(_ sender: Any) {
guard let itemNameText = recipeName.text else { return }
guard itemNameText.characters.count > 0 else {
print("Complete all fields")
return
}
let recipeKey = databaseRef.child("RecipeData").child("recipe").childByAutoId().key
let recipeItem: [String : Any] = ["recipeName" : itemNameText, "recipeID" : recipeKey]
let recipe = ["\(recipeKey)" : recipeItem]
databaseRef.child("RecipeData").child("recipe").updateChildValues(recipe)
print("\(itemNameText) was added")
}
这是结果:
{
"RecipeData": {
"recipe": {
"-Kkv36b_aPl7HAO_VYaJ": {
"recipeName": "Spaghetti Carbonara",
"recipeID": "-Kkv36b_aPl7HAO_VYaJ"
}
}
}
}
如何添加成分?目前我可以在Firebase上手动添加它。但我希望能够采取行动,用配料保存整个配方。大多数示例都为字典提供了一组声明的属性。然而,我的可以是随机的,因为每个食谱可以有随机数量的成分。
答案 0 :(得分:1)
在addRecipe
功能中,试试这个:
...
let ingredients: [String] = ...
var ingredientsJSON = [String: Bool]()
for key in ingredients {
ingredientsJSON[key] = true
}
let recipeJSON: [String : Any] = [
"recipeName" : itemNameText,
"recipeID" : recipeKey,
"ingredients": ingredientsJSON
]
let recipe = ["\(recipeKey)" : recipeJSON]
databaseRef.child("RecipeData").child("recipe").updateChildValues(recipe)
...