我正在尝试使用flask-uploads显示图像。我在我的数据库设置文件（模型）中定义了我的上传表，我正在使用SQLAlchemy。 这是我的数据库模型定义如下:(完整的代码可以在link到我的github repo中找到）
import sys
import os
from sqlalchemy import Boolean, Float, Text
#importing classes from sqlalchemy module
from sqlalchemy import Column, ForeignKey, Integer, String, TEXT
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
from sqlalchemy import create_engine, MetaData
Base = declarative_base()
class User(Base):
__tablename__ = "user"
id = Column(Integer, primary_key=True)
name = Column(String(80), nullable=False)
email = Column(String(50), nullable=False)
picture = Column(String(250))
class University(Base):
__tablename__ = "university"
#column definitions for the university table
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
city = Column(String(80), nullable=False)
user_id = Column(Integer, ForeignKey("user.id"))
user = relationship(User)
upload_id = Column(Integer, ForeignKey("upload.id"))
upload = relationship(Upload)
class Upload(Base):
__tablename__ = "upload"
id = Column(Integer, autoincrement=True, primary_key=True)
name = Column(TEXT(convert_unicode=True))
url = Column(TEXT(convert_unicode=True))
class Room(Base):
"""
this class corresponds to the table representation
of room which is in the database
"""
__tablename__ = "room"
#column definitions for the room table
owner_name = Column(String(90), nullable=False)
id = Column(Integer, primary_key=True)
size = Column(String(60))
description = Column(String(250))
price = Column(String(10))
address = Column(String(250))
owner_number = Column(String(15))
university_id = Column(Integer, ForeignKey("university.id"))
university = relationship(University)
user_id = Column(Integer, ForeignKey("user.id"))
user = relationship(User)
upload_id = Column(Integer, ForeignKey("upload.id"))
upload = relationship(Upload)
engine = create_engine("sqlite:///gotroomwithusers.db")
Base.metadata.create_all(engine)
这是我上传图片的路线：
import os
from flask import Flask, render_template, request, redirect, url_for, flash, jsonify
from flask.ext.sqlalchemy import SQLAlchemy
from flask.ext.storage import get_default_storage_class
from flask.ext.uploads import delete, init, save, Upload
#import module for ORM
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from database_setup import Base, University, Room, Upload
#create an instance of Flask class with the name
#of the runnung application as the argument
app = Flask(__name__)
#app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:////tmp/test.db'
app.config['DEFAULT_FILE_STORAGE'] = 'filesystem'
app.config['UPLOADS_FOLDER'] = os.path.realpath('.') + '/static/'
app.config['FILE_SYSTEM_STORAGE_FILE_VIEW'] = 'static'
init(SQLAlchemy(app), get_default_storage_class(app))
#create connection to database
engine = create_engine("sqlite:///gotroomwithusers.db")
Base.metadata.bind=engine
DBSession = sessionmaker(bind=engine)
session=DBSession()
@app.route("/university/<int:university_id>/rooms/new/", methods=["GET", "POST"])
def newRoom(university_id):
if request.method == "POST":
save(request.files['upload'])
aNewRoom = Room(owner_name=request.form["ownerName"], size=request.form["roomSize"]\
, description=request.form["roomDescription"], price=request.form["roomPrice"]\
, address=request.form["adress"], owner_number=request.form["phoneNum"], \
university_id=university_id)
session.add(aNewRoom)
session.commit()
#feedback to user
flash("New Room Created")
return redirect(url_for("showRooms", university_id=university_id, uploads=uploads))
else:
return render_template("newroom.html", university_id=university_id)
这是上述路线的html代码：
<div class="col-md-3">
<input type="text" class="form-control" name="phoneNum" placeholder="Contact Number">
</div>
<div class="col-md-5">
<input type="text" class="form-control" name="adress" placeholder="Address">
</div>
</div><!--first row-->
</br>
<div class="row">
<div class="col-md-2">
<input type="text" class="form-control" name="roomSize" placeholder="Room Size">
</div>
<div class="col-md-2">
<input type="text" class="form-control" name="roomPrice" placeholder="Room Price/Month">
</div>
</div><!--second row-->
</br>
<div class="row">
<div class="col-md-4" style="height: 100px">
<input type="text" class="form-control" name="roomDescription" placeholder="Room Details" style="height: 100%">
</br>
<input type="file" name="upload">
</div>
这是我希望相应显示各个图像的路线：
@app.route("/university/<int:university_id>/")
@app.route("/university/<int:university_id>/rooms/")
def showRooms(university_id):
uploads = session.query(Upload).filter_by(id=university_id)one()
university = session.query(University).filter_by(id=university_id).one()
rooms = session.query(Room).filter_by(university_id=university_id).all()
return render_template("rooms.html", rooms=rooms, university=university, uploads=uploads)
这是上述路线的hmtl代码：
{% for room in rooms %}
<div class="row">
<div class="col-md-12">
{{upload.name}}
<strong>Owner Name</strong>: {{room.owner_name}}
</br>
<strong>Contact Number</strong>: {{room.owner_number}}
</br>
<strong>Home Address</strong> : {{room.address}}
</br>
<strong>Room Price</strong> : {{room.price}}
</br>
<strong>Room Size</strong> : {{room.size}}
</br>
<strong>Room Description</strong>: {{room.description}}
<div>
</br>
<hr>
{% endfor %}
我可以看到图像保存在我的静态文件夹中，但无法在我的网页上呈现。我一直收到错误：
OperationalError: (OperationalError) no such table:
upload u'INSERT INTO upload (name, url) VALUES (?, ?)'
(u'el-caffinito_3.jpg', u'/static/el-caffinito_3.jpg')
如果需要，我可以提供完整的代码