Question

假设我有一个用于记录的图像的上传字段（如 - 个人资料图片），所以我的问题是我将如何更改该图片的格式？我也很想使用PIL或PythonMagick API，但是我如何在Web2py中做到这一点？

Answer 1

假设您有一个个人资料表和一个图片表然后，您有一个控制器来编辑配置文件图像。通过“改变图片的格式”，我想你想要调整图像大小，创建一个缩略图...... 以下是使用PIL的示例：

def edit_image():
    """
        Edit a profile image, creates a thumb...
    """
    thumb=""
    profile = db.profile(request.vars.profile_id)
    image = db(db.image.id==profile.image).select().first()
    if image:
        form = SQLFORM(db.image, image, deletable=True, showid=False)
        thumb = image.thumb
    else:
        form = SQLFORM(db.image)
    if form.accepts(request.vars, session): 
        response.flash = T('form accepted')
        #resize the original image to a better size and create a thumbnail
        __makeThumbnail(db.image,form.vars.id,(800,800),(260,260))
        redirect(URL('images'))
    elif form.errors:
        response.flash = T('form has errors')
    return dict(form=form,thumb=thumb)

以下是 __ makeThumbnail

的代码

def __makeThumbnail(dbtable,ImageID,image_size=(600,600), thumbnail_size=(260,260)):
    try:    
        thisImage=db(dbtable.id==ImageID).select()[0]
        from PIL import Image
    except: return

    full_path = path.join(request.folder,'static','images', thisImage.file)
    im = Image.open(full_path)
    im.thumbnail(image_size,Image.ANTIALIAS)
    im.save(full_path)
    thumbName='thumb.%s' % (thisImage.file)
    full_path = path.join(request.folder,'static','images', 'thumbs',thumbName)
    try: 
        im.thumbnail(thumbnail_size,Image.ANTIALIAS)
    except:
        pass
    im.save(full_path)
    thisImage.update_record(thumb=thumbName)
    return

如何更改Web2py中图像上载字段的格式？

1 个答案: