带有 Ajax 的 jQuery FancyBox [英] jQuery FancyBox with Ajax

问题描述

我在 Stackoverflow 上查看了许多网站和许多页面，但没有一个解决了我的问题.简单地说，我有一个 超链接，我想通过 Ajax 调用从数据库中检索图像，然后在 FancyBox 弹出窗口中显示它.我还尝试了 Javascript 和 Controller 操作方法的许多不同组合，但没有设法正确显示下载的文件.您能否看看我的代码并给出一个包含 View 和 Controller 中所有必要方法的工作示例?另一方面，打开图像文件的 FancyBox 时，最好为其他文件类型(即 excel、pdf)打开一个对话框.

I have look at many web sites and many pages on Stackoverflow, but none of them has solved my problem yet. Simply, I have a hyperlink and I want to retrieve an image from database via Ajax call and then display it on FancyBox popup. I also tried many different combinations of Javascript and Controller action methods, but have not managed so display the downloaded file properly. Could you please have a look at my code and give a working example containing all the necessary methods in View and in Controller? On the other hand, it would be better to open a dialog for the other file types (i.e. excel, pdf) while opening FancyBox for image files.

查看:

<a onclick="downloadFile(@Model.ID);">@Model.FileName</a>


function downloadFile(id) {     
    $.ajax({
        url: "/Issue/RenderImage?ID=" + id,
        async: true,
        type: "POST",
        dataType: "json",
        contentType: "application/json; charset=utf-8",
        success: function (response) {
            $('#fancybox-inner').html('<img height="200" width="250" src="data:image/png;base64,' + response + '" />');
        }       
    });
}

Controller:Controller中的方法没有问题，正确返回图像.

Controller: There is no problem regarding to the method in the Controller and it returns the image properly.

[HttpPost]
public virtual JsonResult RenderImage(int id)
{
    string str = System.Convert.ToBase64String(repository.FileAttachments.FirstOrDefault(p => p.ID == id).FileData, 0, repository.FileAttachments.FirstOrDefault(p => p.ID == id).FileData.Length);
    return Json(new { Image = str, JsonRequestBehavior.AllowGet });
}

推荐答案

最好尝试

success: function (response) {
    $.fancybox({
        content: '<img height="200" width="250" src="data:image/png;base64,' + response + '" />',
        type: "html"
    });
}  

我想知道为什么当您在已经打开它的地方没有显示任何代码时，您还试图将内容加载到fancybox 容器中.不管怎样，用新的内容启动一个新的fancybox总是更好(来自ajax响应)

I wonder why you trying to load the content inside a fancybox container when you don't show any code where you already opened it. Anyways, it's always better to launch a new fancybox with the new content (from ajax response)

当然，如果 ajax 调用为您的 <img> 标签返回正确的响应，这将起作用，但我不知道.

Of course, this will work if the ajax call is returning the correct response for your <img> tag, but that I cannot tell.

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