I'm trying to create a Flask app that will display the amount and content of emails sent by Presidential campaigns. I'm using Flask-SQLAlchemy to create a database to hold the emails. The fname file I'm working from looks like this:
models.pyThe database is populated the way I'd like it to be, so the problem isn't there. I'm getting the from app import db
class Politician(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(64), index=True)
emails = db.relationship('Email', backref='author', lazy='dynamic')
def __repr__(self):
return '<Politician %s>' % self.name
class Email(db.Model):
id = db.Column(db.Integer, primary_key=True)
body = db.Column(db.String(10000))
sender_id = db.Column(db.String(10000), db.ForeignKey('politician.name'))
def __repr__(self):
return '<E-mail %s>' % self.body
error from my _BoundDeclarativeMeta file, which looks like this:
views.pyI can gather from the error message that when I refer to from flask import render_template, flash, redirect
from app import app
from .models import Politician, Email
@app.route('/')
@app.route('/index')
def index():
posts = [i.body for i in Email]
return render_template('index.html',
title='Home',
posts=posts)
in Email, I shouldn't use the model name, but I'm not quite sure how to access the emails themselves from the database. Do any of you have any suggestions?
答案 0 :(得分：0)
I'm a dope - it was an easy fix. I got it to work by changing the posts list comprehension to new <classname>.