Question

我在Laravel 5中创建了一个表单，其中包含产品名称，产品主图像和次映像。图像字段和辅助字段都是可选的。

public String findMovieBy(ModelMap modelMap, @RequestParam(required = true) String searchCriteria,
        @RequestParam(required = true) String criteriaValue) {
    Movie movie = movieService.findByProperty(searchCriteria, criteriaValue);

我在请求文件中的验证是：

<div class="form-group {{ ($errors->has('title')) ? 'has-error' : '' }}">
    <label>Title *</label>
    <input class="form-control validate[required]" name="title" type="text" value="{{ Input::old('title') }}">
    {{ ($errors->has('title') ? $errors->first('title') : '') }}
</div>
<div class="form-group">
    <label for="featured_image">Cover Image
        <small>(optional)</small>
    </label>
    <input type="file" placeholder="" id="featured_image" name="featured_image">
    <small class="description"> Maximum file size: 2 MB.</small>
    {{ ($errors->has('title') ? $errors->first('featured_image') : '') }}
</div>
<div class="form-group">
    <label for="gallery_images">Gallery Images
        <small>(optional)</small>
    </label>
    <input type="file" placeholder="" id="gallery_images" name="gallery_images[]" multiple="">
    <small class="description">Maximum file size: 2 MB.</small>
    {{ ($errors->has('title') ? $errors->first('gallery_images') : '') }}
</div>

但它始终检查图像上传是否上传。哪个不正确，只有在上传图像时才检查图像类型。

谢谢。

Answer 1

您应该在上传之前进行这些检查以获得最佳效果。下面的例子使用了ajax form jquery插件

$(document).ready(function() {
    var options = {
        target: '#output',
        beforeSubmit: beforeSubmit,
        uploadProgress: OnProgress,
        success: afterSuccess,
        resetForm: true
    };
    $('#my-upload-form').submit(function() {
        $(this).ajaxSubmit(options);
        return false;
    });
});

function OnProgress(event, position, total, percentComplete) {
    // Some in progress thingy
}

function afterSuccess() {
    // OK msg
}

function beforeSubmit() {
    if (window.File && window.FileReader && window.FileList && window.Blob) {
        if( !$('#image').val()) {
            return false
        }

        var fsize = $('#image')[0].files[0].size;
        var ftype = $('#image')[0].files[0].type;
        switch(ftype) {
            case 'image/jpeg': case 'image/pjpeg':
            break;
            default:
                // Input not supported
                return false
        }

        if(fsize>10485760) {
            // Input too large
            return false
        }
    } else {
        // Upgrade browser msg
        return false;
    }
}

function bytesToSize(bytes) {
    var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
    if (bytes == 0) return '0 Bytes';
    var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
    return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
}

Laravel 5：仅在上载时检查图像类型验证

1 个答案: