存储上传的图像？

Question

我正在使用基本的 WTForms FileField 到目前为止我能够上传文件，但它没有存储在目录中，但是它存储在 POSTGRESQL < / strong>数据库为<Binary data>。如何将其存储在目录中并在浏览器中显示。 我不确定我做得对。我只是想上传图片并在浏览器中显示它，就是这样。

文章模型

class Article(Base):
    __tablename__ = 'articles'
    id = Column(Integer, primary_key=True)
    title = Column(String(255), unique=True, nullable=False)
    body = Column(Text, default=u'')
    image_field = Column(BYTEA)
    category_id = Column(Integer, ForeignKey(Category.id))
    category = relationship(Category)
    created = Column(DateTime, default=datetime.datetime.utcnow)
    edited = Column(DateTime, default=datetime.datetime.utcnow)

    @classmethod
    def all(cls):
        return DBSession.query(Article).order_by(sa.desc(Article.created))

    @classmethod
    def by_id(cls, id):
        return DBSession.query(Article).filter(Article.id == id).first()

    @property
    def slug(self):
        return urlify(self.title)

    @property
    def created_in_words(self):
        return time_ago_in_words(self.created)

    @classmethod
    def get_paginator(cls, request, page=1):
        page_url = PageURL_WebOb(request)
        return Page(Article.all(), page, url=page_url, items_per_page=4)

View.py

@view_config(route_name='article_action', match_param="action=create",
             renderer="edit_blog.mako",
             permission='create')
def article_create(request):
    article = Article()
    form = ArticleCreateForm(request.POST)
    if request.method == 'POST' and form.validate():
        if form.image.data:
            filename = request.POST['image'].filename
            input_file = request.POST['image'].file
            file_path = os.path.join('static/images', filename)
            with open(file_path, 'wb') as output_file:
                shutil.copyfileobj(input_file, output_file)

        form.populate_obj(entry)
        DBSession.add(entry)
        return HTTPFound(location=request.route_url('home'))
    return {'form': form, 'action': request.matchdict.get('action')}

文件存储在数据库中，但不存储在images目录中。

Answer 1

file是一个带有数据的python文件对象。我想你应该从中读取并将你读到的内容写到output_file。

    with input_file as infile, open(file_path, 'wb') as output_file:
        infile.seek(0)
        shutil.copyfileobj(infile, output_file)