Question

尝试更新NUTRITION表的值时，我的表单出现问题。编辑表单适用于任何涉及ITEM的内容，但不适用于嵌套对象（NUTRITION）。填充对于NUTRITION工作正常，表单接收数据。但是，当我重新填充表格时，它会显示零之后的填充值。

查看/编辑表格

@(id: Long, itemForm: Form[Item])

@import helper._

@implicitFieldConstructor = @{ FieldConstructor(twitterBootstrapInput.render) } 

@main {
    <div class="panel panel-primary" style="font-family: Crumble;font-weight:bold">
            <div class="panel-heading">
                <h1 class="panel-title">Edit Item</h1>
            </div>

        @form(routes.Admin.update(id)) {
            <fieldset>
                <legend>Item Information</legend>

                @inputText(itemForm("name"), '_label -> "Item name")
                @inputText(itemForm("description"), '_label -> "Item description")
                @inputText(itemForm("image_url"), '_label -> "Image URL")
                @inputText(itemForm("nutrition.serving_size"), '_label -> "Serving Size (G)")
                @inputText(itemForm("nutrition.calories"), '_label -> "Calories")
                @inputText(itemForm("nutrition.calories_fat"), '_label -> "Calories From Fat")
                @inputText(itemForm("nutrition.total_fat"), '_label -> "Total Fat (G)")
                @inputText(itemForm("nutrition.sat_fat"), '_label -> "Saturated Fat")
                @inputText(itemForm("nutrition.trans_fat"), '_label -> "Trans Fatty Acids (G)")
                @inputText(itemForm("nutrition.cholesterol"), '_label -> "Cholesterol (MG)")
                @inputText(itemForm("nutrition.sodium"), '_label -> "Sodium (MG)")
                @inputText(itemForm("nutrition.carbs"), '_label -> "Carbohydrates (G)")
                @inputText(itemForm("nutrition.fiber"), '_label -> "Dietary Fiber (G)")
                @inputText(itemForm("nutrition.sugar"), '_label -> "Sugars (G)")
                @inputText(itemForm("nutrition.protein"), '_label -> "Protein (G)")
                @inputText(itemForm("nutrition.vitamin_c"), '_label -> "Vitamin C (%DV)")
                @inputText(itemForm("nutrition.calcium"), '_label -> "Calcium (%DV)")
                @inputText(itemForm("nutrition.iron"), '_label -> "Iron (%DV)")

                @select(
                    itemForm("category.id"), 
                    options(Category.options), 
                    '_label -> "Category", '_default -> "-- Choose a category --",
                    '_showConstraints -> false
                )
            </fieldset>

        <div class="footer">
            <div class="form-actions">
                <input type="submit" value="Save this item" class="btn btn-primary"> or 
                <a href="@routes.Admin.adminItems()" class="btn">Cancel</a> 
            </div>
        }
        </div>
        @form(routes.Admin.delete(id), 'class -> "topRight") {
            <input style="margin-right:25px;margin-top:100px" type="submit" value="Delete this item" class="btn btn-danger">
        }
    </div>     
}

CONTROLLER

 public static Result edit(Long id) {
            Form<Item> itemForm = form(Item.class).fill(Item.find.byId(id));

            return ok(editItemForm.render(id, itemForm));
        }

        public static Result update(Long id) {
            Form<Item> itemForm = form(Item.class).bindFromRequest();
            if(itemForm.hasErrors()) {
                return badRequest(editItemForm.render(id, itemForm));
            }
            itemForm.get().update(id);
            flash("success", "item " + itemForm.get().name + " has been updated");
            return GO_ADMIN;
        }

        public static Result create() {
            Form<Item> itemForm = form(Item.class);
            return ok(
                createItemForm.render(itemForm)
            );
        }

        public static Result save() {
            Form<Item> itemForm = form(Item.class).bindFromRequest();
            if(itemForm.hasErrors()) {
                return badRequest(createItemForm.render(itemForm));
            }
            itemForm.get().save();

            flash("success", "item " + itemForm.get().name + " has been created");
            return GO_ADMIN;
        }

打印

Form Information View for Edit:
Some(models.Item@a)
{}

Form Information Updated:
Some(models.Item@28ddd490)
{nutrition.trans_fat=0.0, nutrition.carbs=1, category.id=3, nutrition.sat_fat=1.
5, nutrition.sugar=0, nutrition.serving_size=55, nutrition.sodium=220, nutrition
.total_fat=10.0, nutrition.vitamin_c=0, image_url=images/items/subs/bacon_egg_ch
eese.jpg, nutrition.cholesterol=10, description=Start the day with sizzling Beec
hwoodΓÇá Smoked Back Bacon, free range egg omelette and melted cheese.ΓÇÖ., nutr
ition.calcium=0, name=Bacon, Egg and Cheese, nutrition.calories=100, nutrition.p
rotein=0, nutrition.calories_fat=90, nutrition.iron=0, nutrition.fiber=0}

Form Information View for Edit:
Some(models.Item@a)
{}

Answer 1

通过添加单独的营养表格来解决我的问题。这是下面的代码。

<legend>Item Information</legend>
                @inputText(itemForm("name"), '_label -> "Item name")
                @inputText(itemForm("description"), '_label -> "Item description")
                @inputText(itemForm("image_url"), '_label -> "Image URL")

                @select(
                    itemForm("category.id"), 
                    options(Category.options), 
                    '_label -> "Category", '_default -> "-- Choose a category --",
                    '_showConstraints -> false
                )

                <legend>Florida Nutrition Information</legend>
                @inputText(nutritionFormFlorida("serving_size"), '_label -> "Serving Size (G)")
                @inputText(nutritionFormFlorida("calories"), '_label -> "Calories")
                @inputText(nutritionFormFlorida("calories_fat"), '_label -> "Calories From Fat")
                @inputText(nutritionFormFlorida("total_fat"), '_label -> "Total Fat (G)")
                @inputText(nutritionFormFlorida("sat_fat"), '_label -> "Saturated Fat")
                @inputText(nutritionFormFlorida("trans_fat"), '_label -> "Trans Fatty Acids (G)")
                @inputText(nutritionFormFlorida("cholesterol"), '_label -> "Cholesterol (MG)")
                @inputText(nutritionFormFlorida("sodium"), '_label -> "Sodium (MG)")
                @inputText(nutritionFormFlorida("carbs"), '_label -> "Carbohydrates (G)")
                @inputText(nutritionFormFlorida("fiber"), '_label -> "Dietary Fiber (G)")
                @inputText(nutritionFormFlorida("sugar"), '_label -> "Sugars (G)")
                @inputText(nutritionFormFlorida("protein"), '_label -> "Protein (G)")
                @inputText(nutritionFormFlorida("vitamin_c"), '_label -> "Vitamin C (%DV)")
                @inputText(nutritionFormFlorida("calcium"), '_label -> "Calcium (%DV)")
                @inputText(nutritionFormFlorida("iron"), '_label -> "Iron (%DV)")

表单中的嵌套对象不更新

1 个答案: