我可以在javascript中将数组附加到'formdata'吗? [英] Can I append an array to 'formdata' in javascript?

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问题描述

我正在使用FormData上传文件。我还想发送一系列其他数据。

I'm using FormData to upload files. I also want to send an array of other data.

当我发送图像时,它工作正常。当我将一些文本附加到formdata时,它工作正常。当我尝试在下面附加'tags'数组时,其他一切正常但没有发送数组。

When I send just the image, it works fine. When I append some text to the formdata, it works fine. When I try to attach the 'tags' array below, everything else works fine but no array is sent.

FormData和附加数组的任何已知问题?

Any known issues with FormData and appending arrays?

实例化formData:

Instantiate formData:

formdata = new FormData();

我创建的数组。 Console.log显示一切正常。

The array I create. Console.log shows everything working fine.

        // Get the tags
        tags = new Array();
        $('.tag-form').each(function(i){
            article = $(this).find('input[name="article"]').val();
            gender = $(this).find('input[name="gender"]').val();
            brand = $(this).find('input[name="brand"]').val();
            this_tag = new Array();
            this_tag.article = article;
            this_tag.gender = gender;
            this_tag.brand = brand;
            tags.push(this_tag);    
            console.log('This is tags array: ');
            console.log(tags);
        });
        formdata.append('tags', tags);
        console.log('This is formdata: ');
        console.log(formdata);

我如何发送:

        // Send to server
        $.ajax({
            url: "../../build/ajaxes/upload-photo.php",
            type: "POST",
            data: formdata,
            processData: false,
            contentType: false,
            success: function (response) {
                console.log(response);
                $.fancybox.close();
            }
        });


推荐答案

这个怎么样?

formdata.append('tags', JSON.stringify(tags));

...相应地,使用 json_decode 在服务器上解析它。请参阅,FormData.append的第二个值可以是...

... and, correspondingly, using json_decode on server to deparse it. See, the second value of FormData.append can be...


一个Blob,文件或字符串,如果两者都不是,值转换为
字符串

a Blob, File, or a string, if neither, the value is converted to a string

我看到它的方式,你的标签数组包含对象(@Musa是对的,顺便说一句;使 this_tag 一个数组,然后为它指定字符串属性没有意义;改为使用普通对象),所以原生转换(使用 toString())是不够的。不过,JSON'ing应该可以获得信息。

The way I see it, your tags array contains objects (@Musa is right, btw; making this_tag an Array, then assigning string properties to it makes no sense; use plain object instead), so native conversion (with toString()) won't be enough. JSON'ing should get the info through, though.

作为旁注,我会重写属性赋值块:

As a sidenote, I'd rewrite the property assigning block just into this:

tags.push({article: article, gender: gender, brand: brand});

这篇关于我可以在javascript中将数组附加到'formdata'吗?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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