使用 Flask-Uploads 和 Flask-WTF 上传失败验证

Question

我似乎无法弄清楚为什么一个字段失败而另一个字段成功上传文件。我可以上传照片就好了……但是当涉及到 pdf 时，我无法让它通过验证。我已经搜索了我的代码是否有任何不妥但找不到任何东西。有趣的是我可以通过手动上传集上传照片，这对我来说没有意义。我猜我用 flask-uploads 配置 flask-wtf 的方式有些不对劲，但是看到网上没有关于如何一起使用这两者的文档，我只好尽力而为。

任何帮助将不胜感激，因为我需要上传 pdf 文件，这让我很困惑。

代码如下...非常感谢！

config.py

UPLOADED_MANUALS_DEST = "C:/pyprojects/cc/uploads/eq_manuals/"
UPLOADED_MANUALS_ALLOW = 'pdf'
UPLOADED_PHOTOS_DEST = "C:/pyprojects/cc/uploads/eq_photos/"
UPLOADED_PHOTOS_ALLOW = 'png, jpg, jpeg'

__init__.py

from flaskext.uploads import UploadSet, configure_uploads, patch_request_class
photos = UploadSet('photos')
manuals = UploadSet('manuals')
configure_uploads(app, (photos, manuals))
patch_request_class(app)

forms.py

class EQForm(Form):
    name = StringField('Name', validators=[Required('Equipment Name is required.')])
    photo = FileField('Equipment Photo', validators=[
        FileAllowed(photos, 'Photo must be a png, jpg, or jpeg!')])
    manual = FileField('Equipment Manual', validators=[
        FileAllowed(manuals, 'Manual must be a pdf!')])

views.py

@app.route('/admin/equipment/', methods=['GET', 'POST'])
@roles_accepted('admin')
def equipment():

    eqform = EQForm()

    if eqform.validate_on_submit():
        # os.path.join() the secured filename and the root path from config.py imported as join()
        new_eq = Equipment(name = eqform.name.data)

        if eqform.photo.data:
            photo_path = join(
                app.config['UPLOADED_PHOTOS_DEST'],
                secure_filename(eqform.photo.data.filename)
                )

            eqform.photo.data.save(photo_path)
            new_eq.photo_path = photo_path

        if eqform.manual.data:
            manual_path = join(
                app.config['UPLOADED_MANUALS_DEST'],
                secure_filename(eqform.manual.data.filename)
                )

            eqform.manual.data.save(manual_path)
            new_eq.manual_path = manual_path

        db.session.add(new_eq)
        db.session.commit()

    equipment = Equipment.query.all()

    return render_template('equipment.html',
        title="Equipment Database",
        equipment = equipment,
        eqform = eqform
        )

equipment.html

        <form action="" method="POST" enctype="multipart/form-data" class="eq-field hide" name="eqform">
      {{ eqform.hidden_tag() }}
          <ul class="list-group">
            <li class="list-group-item">
              {{ eqform.name.label }}: {{ eqform.name }}
            </li>
            <li class="list-group-item">
              {{ eqform.photo.label }}: {{ eqform.photo }} <br>
              <span style="font-size:.75em;">Photo must be a png, jpg, or jpeg.</span>
            </li>
            <li class="list-group-item">
              {{ eqform.manual.label }}: {{ eqform.manual }} <br>
              <span style="font-size:.75em;">Manual must be a pdf.</span>
            </li>
          </ul>
          <input type="submit" class="btn btn-default" value="Submit">
        </form>

Answer 1

我犯的一个愚蠢的错误：

UPLOADED_MANUALS_ALLOW = 'pdf'
UPLOADED_PHOTOS_ALLOW = 'png, jpg, jpeg'

我声明为字符串的这两个允许扩展列表...将它们更改为：

UPLOADED_MANUALS_ALLOW = ('pdf')
UPLOADED_PHOTOS_ALLOW = ('png', 'jpg', 'jpeg')

然而，有趣的是：该列表仍然无法处理单个项目，所以我不得不添加两个：

UPLOADED_MANUALS_ALLOW = ('pdf', 'PDF')

使用 Flask-Uploads 和 Flask-WTF 上传失败验证

Upload with Flask-Uploads and Flask-WTF failing validation

python

validation

upload

flask

flask-wtforms