我在Laravel中创建配方应用程序，每个配方都会有不确定的成分。用户将能够单击按钮以动态添加额外的数量，度量和成分字段。现在我只有3个字段用于测试。成分和度量选择框正在从其自己的数据库表中填充，其ID为值。这是我到目前为止所做的。
查看表格
<form action="store">
<input type="hidden" name="_token" value="{{ csrf_token() }}">
<div class="row">
<button class="btn btn-default" type="submit">Add Recipe</button>
<div class="col-xs-6">
<label for="recipe_name">Recipe Name</label>
<input type="text" name="recipe_name" class="form-control input-sm" id="recipe_name">
</div>
<br />
<div class="col-xs-8">
<label for="recipe_desc">Recipe Description</label>
<input type="text" name="recipe_desc" class="form-control input-sm" id="recipe_desc">
</div>
<br />
</div>
<br />
<div class="row">
<div class="col-xs-2">
<label for="amount">Amount</label>
<input type="number" name="amount[]" class="form-control input-sm" id="amount" />
</div>
<div class="col-xs-2">
<label for="measure">Measure</label>
{!! Form::select('measure[]',
(['0' => 'Measure'] + $measure), null,
['class' => 'form-control input-sm', 'id' => 'measure']) !!}
</div>
<div class="col-xs-4">
<label for="ingredient">Ingredient</label>
{!! Form::select('ingredient[]',
(['0' => 'Select Ingredient'] + $ingredients), null,
['class' => 'form-control input-sm', 'id' => 'ingredient']) !!}
</div>
</div>
<br>
<div class="row">
<div class="col-xs-2">
<label for="amount">Amount</label>
<input type="number" name="amount[]" class="form-control input-sm" id="amount" />
</div>
<div class="col-xs-2">
<label for="measure">Measure</label>
{!! Form::select('measure[]',
(['0' => 'Measure'] + $measure), null,
['class' => 'form-control input-sm', 'id' => 'measure']) !!}
</div>
<div class="col-xs-4">
<label for="ingredient">Ingredient</label>
{!! Form::select('ingredient[]',
(['0' => 'Select Ingredient'] + $ingredients), null,
['class' => 'form-control input-sm', 'id' => 'ingredient']) !!}
</div>
</div>
<br />
<div class="row">
<div class="col-xs-2">
<label for="amount">Amount</label>
<input type="number" name="amount[]" class="form-control input-sm" id="amount" />
</div>
<div class="col-xs-2">
<label for="measure">Measure</label>
{!! Form::select('measure[]',
(['0' => 'Measure'] + $measure), null,
['class' => 'form-control input-sm', 'id' => 'measure']) !!}
</div>
<div class="col-xs-4">
<label for="ingredient">Ingredient</label>
{!! Form::select('ingredient[]',
(['0' => 'Select Ingredient'] + $ingredients), null,
['class' => 'form-control input-sm', 'id' => 'ingredient']) !!}
</div>
</div>
<br />
<div class="row">
<div class="col-xs-8">
<label for="recipe_instruct">Recipe Description</label>
<textarea rows="3" name="recipe_instruct" class="form-control input-sm" id="recipe_instruct"></textarea>
</div>
</div>
</form>
RecipeController
public function store(Request $request)
{
$recipeName = $request->input('recipe_name');
$recipeDesc = $request->input('recipe_desc');
$recipeInstruct = $request->input('recipe_instruct');
$ingredients = $request->input('ingredient');
$id = DB::table('recipe')->insertGetId([
'name' => $recipeName,
'description' => $recipeDesc,
'instructions' => $recipeInstruct
]);
foreach($ingredients as $ingredient)
DB::table('recipe_ingredient')->insert([??????]);
}
如果我做了一个dd，它输出的是正确的
array:7 [▼
"_token" => "DmAHXPc2VxibzbJTDlmSRxcS6XZPTq906IKbz6Hf"
"recipe_name" => "Test Recipe"
"recipe_desc" => "Test Recipe Description"
"amount" => array:3 [▼
0 => "1"
1 => "2"
2 => "3"
]
"measure" => array:3 [▼
0 => "8"
1 => "9"
2 => "8"
]
"ingredient" => array:3 [▼
0 => "4"
1 => "3"
2 => "7"
]
"recipe_instruct" => "Test recipe instructions"
]
我在配方数据库中插入recipe_name，recipe_desc和recipe_instruct并返回id。然后我使用该id来引用recipe_ingredient表中的成分id，度量id和amount id。
我是否需要遍历每个数组以将它们分别插入recipe_ingredient表中？或者是否有一种更容易，更有说服力的方式一次性完成这项工作？
RecipeIngredient表
Schema::create('recipe_ingredient', function (Blueprint $table) {
$table->integer('recipe_id')->unsigned();
$table->integer('ingredient_id')->unsigned();
$table->integer('measure_id')->unsigned();
$table->integer('amount');
$table->foreign('recipe_id')->references('id')->on('recipe')->onDelete('cascade');
$table->foreign('ingredient_id')->references('id')->on('ingredient')->onDelete('cascade');
$table->foreign('measure_id')->references('id')->on('measure')->onDelete('cascade');
$table->timestamps();
});
食谱模型
public function ingredients()
{
return $this->hasMany('App\RecipeIngredient');
}
RecipeIngredient模型
public function recipe()
{
return $this->belongsTo('App\Recipe');
}
答案 0 :(得分：0)
我想出了一个解决方案。也许不是正确的方法，但它有效。
<强> RecipeController
public function store(Request $request)
{
$recipeName = $request->input('recipe_name');
$recipeDesc = $request->input('recipe_desc');
$recipeInstruct = $request->input('recipe_instruct');
$ingredients = $request->input('ingredient');
$measure = $request->input('measure');
$amount = $request->input('amount');
$id = DB::table('recipe')->insertGetId([
'name' => $recipeName,
'description' => $recipeDesc,
'instructions' => $recipeInstruct
]);
$i = 0;
foreach($ingredients as $ingredient)
{
DB::table('recipe_ingredient')->insert(
['recipe_id' => $id, 'ingredient_id' => $ingredients[$i], 'measure_id' => $measure[$i], 'amount' =>$amount[$i]]
);
$i++;
}
return "Success!";