Laravel vue 未找到列：1054 未知

Posted 2023-02-16

【中文标题】Laravel vue 未找到列：1054 未知

【英文标题】：Laravel vue Column not found: 1054 Unknown

【发布时间】：2020-05-13 09:59:52

【问题描述】：

我正在尝试将 id 数组发送到后端并使用 sync 方法存储它们，但它返回

SQLSTATE[42S22]: Column not found: 1054 Unknown column '0' in 'field list' (SQL: insert into `category_products` (`category_id`, `product_id`, `0`) values (0, 12, 2))

代码

product model

public function categories()
  return $this->belongsToMany(Category::class,'category_products', 'product_id', 'category_id');

category model

public function products()
  return $this->belongsToMany(Product::class);

controller store function

//getting other inputs...
$product->save();
$product->categories()->sync($request->categories, false);

data that sent to back-end

注意：可能值得一提的是我正在使用 vueJs 来发送 数据，它不是基于刀片的。

Component html

<el-cascader
    v-model="form.categories"
    style="width: 100%;"
    :options="cats"
    :props="
        multiple: true,
        checkStrictly: true,
        value: 'id',
        label: 'name',
    "
    clearable
    filterable>
</el-cascader>

Component Script

data() 
    return 
        brands: [],
        cats: [],
        tags: [],
        site_name: process.env.MIX_APP_NAME,
        site_url: process.env.MIX_APP_URL,
        dialogImageUrl: '',
        dialogVisible: false,
        disabled: false,
        form: 
            name: '',
            slug: '',
            price: '',
            new_price: '',
            sku: '',
            qty: 1,
            active: '',
            photo: '',
            photos: [],
            shortDesc: '',
            longDesc: '',
            tags: [],
            brand_id: '',
            categories: [], // this will send to back-end
            user_id: '',
            seoTitle: '',
            seoTags: '',
            seoPhoto: '',
            seoDescription: '',
            variations: [],
            options: [],
            condition: '',
            isbn: '',
            ean: '',
            upc: '',
        ,
    
,
methods: 
    // send product data
    onSubmit(e) 
        e.preventDefault();
        // axios.defaults.headers.common['Authorization'] = `Bearer $await this.$auth.getAccessToken()`
        axios.post('/api/admin/products/store', this.form)
        .then(res => 
            console.log(res.data.success);

            this.$notify(
                title: 'Hooray!',
                message: res.data.success,
                offset: 100,
                type: 'success'
            );

            // this.$router.push(name: 'adminProducts');
            this.form = 
                name: "",
                slug: "",
                price: "",
                new_price: "",
                sku: "",
                qty: '',
                active: "",
                photo: "",
                shortDesc: "",
                longDesc: "",
                tags: [],
                brand_id: "",
                categories: [],
                seoTitle: "",
                seoTags: [],
                seoPhoto: "",
                seoDescription: "",
                variations: [],
                user_id: this.form.user_id
            ;
        )
        .catch(error => 
            var errors = error.response.data;
                let errorsHtml = '<ol>';
                $.each(errors.errors,function (k,v) 
                        errorsHtml += '<li>'+ v + '</li>';
                );
                errorsHtml += '</ol>';

            this.$notify.error(
                title: 'Error',
                dangerouslyUseHTMLString: true,
                message: errorsHtml
            );
        )
    ,

有什么想法吗？

更新

我已经解决了这个代码的问题

foreach($request->categories as $caat)
  $product->categories()->sync($caat, false);

现在它保存了我的产品类别，但我个人对此并不满意！我想使用默认同步方法$product->categories()->sync($request->categories, false); ，不需要任何循环。

请分享你的想法。

【参考方案1】：

这是因为您的类别数组是一个二维数组。现在，当您同步该数据时，您的代码如下所示。

$product->categories()->sync([0] => ['0' => ''], false);

这就是错误显示Column not found: 1054 Unknown column '0' in 'field list' 的原因。

现在，要解决您的问题，首先您的类别值必须是这样的

$categories = [2, 1]; // like this one
$categories = [[2], [1]]; // not this one

您可以在同步之前首先重新构建您的类别数组，通过这样做

$categories = [];
foreach ($request->categories$key => $category) 
       $categories [] = $category[0];


$product->categories()->sync($categories, false);