modal preview is white by ajax response

[lj19950508]

Prerequisites

• [✔] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• [✔ ] The issue still exists against the latest master branch of bootstrap-fileinput.
• [✔] This is not an usage question. I confirm having read the plugin documentation and demos.
• [ ] This is not a general programming / coding question. (Those should be directed to the webtips Q & A forum).
• [ ] I have attempted to find the simplest possible steps to reproduce the issue.
• [ ] I have included a failing test as a pull request (Optional).

Steps to reproduce the issue

1.upload with ajax , and response like , and it can be preview by image type.

2. but when it zoom it, it's blank

Expected behavior and actual behavior

1. Can type be identified by suffixes？ just like image can identified by .png
2. why thumbnail works but modal deital doesn'twork .

when not uploaded, every work , but when uploaded and use response option, i can't preview with modal detail

Environment

Browsers

• [✔ ] Google Chrome
• [ ] Mozilla Firefox
• [ ] Internet Explorer
• [ ] Safari

Operating System

• [✔ ] Windows
• [ ] Mac OS X
• [ ] Linux
• [ ] Mobile

Libraries

• jQuery version: 3.5.1

• bootstrap-fileinput version: 5.2.2

• botstrap 4.4.1

  Isolating the problem

• [ ] This bug happens on the plugin demos page

• [ ] The bug happens consistently across all tested browsers

• [✔ ] This bug happens when using bootstrap-fileinput without other plugins

• [ ] I can reproduce this bug in a jsbin

[kartik-v]

Which plugin version are you using?

[lj19950508]

bootstrap-fileinput-5.2.2

[kartik-v]

Not sure why - because it works fine on tests - You can cross check this with ajax demo example #4.

Check your app code and client browser has stale cache loading outdated assets. Check if any other javascript errors in your app on your client browser console.

Also test with the latest code on dev-master (v5.2.3 not released yet) and confirm.

[lj19950508]

when i use batch upload button , it's works when i use simpe upload button , it doesn't work ;

[lj19950508]

ajax demo example #4. , when i first upload with simple upload button , and it errors, but when i use batchupload button , it's ok

[lj19950508]

@kartik-v If I don't define type by response, can I automatically adapt the preview file type according to the file suffix eg. .jpg ->image .pdf ->pdf .txt-> text because if i upload txtfile and return a pdffile without type , it will preview as image

[kartik-v]

Yes the above behavior already exists in the plugin and you can override the default configurations via fileTypeSettings

[lj19950508]

@kartik-v when i upload and response initialPreviewConfig without type fileTypeSettings doesn't work ,
i must be set attr type

this is response

[lj19950508]

prev comments add result image

[kartik-v]

Yes for initialPreview you must set the type in initialPreviewConfig for each file from server to display the right template.... else default will be image