how can i do a feed of posts with flask and Jinja2? - python-3.x

Question

I'm using the flask-SQLAchemy to manage my DB and i have a table named post with the columns content, title, date, likes and profile_id, in the feed i use a simple jinja2 template and i send a variable with all posts in db, when i render the posts i make a for loop to render it but i can't take the name of the person who make the post (i have a variable with his id); So my question is how can i take the name of user who make the post in a jinja template?

Answer 1

Is the column 'profile_id' the primary key? If so, then your post might be actually showing the ID of the post (i.e. the number that corresponds the primary key or the main column to identify a certain post) instead of what you want.
class Post(db.Model):
profile_id = db.Column(db.Integer, primary_key=True)
likes = db.Column(db.Integer, nullable=False)
title = db.Column(db.String(250))
date_posted = db.Column(db.DateTime)
content = db.Column(db.Text)
Try analyzing the code above, I assume that's your code, what what you need to do is add another column which in this case the column known as the 'author', so do the following:
class Post(db.Model):
profile_id = db.Column(db.Integer, primary_key=True)
likes = db.Column(db.Integer, nullable=False)
title = db.Column(db.String(250))
author = db.Column(db.String(250))
date_posted = db.Column(db.DateTime)
content = db.Column(db.Text)
Done? Try opening a terminal and build your new model by doing the following:
python name-of-your-app.py
from name-of-your-app import *
db.create_all()
exit()
By doing this, you are making sure that your new model is actually being used instead of the old one. The next thing for you to do is add the 'author' column to your add function and edit function, then make sure to add a new input for the 'author' column in your jinja2 template and also replace the 'profile_id' with 'author'. If you are still confused, please refer to the code I've used while I was still learning flask. Also, consult to the provided link which I've also used to make the provided code.
https://www.youtube.com/watch?v=XHGpPCYmPvI
from flask import Flask, render_template, request, redirect, url_for
from flask_sqlalchemy import SQLAlchemy
from flask_simplelogin import SimpleLogin, is_logged_in
from datetime import datetime
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///blog.db'
app.config['SECRET_KEY'] = 'something-secret'
app.config['SIMPLELOGIN_USERNAME'] = 'admin'
app.config['SIMPLELOGIN_PASSWORD'] = 'admin'
db = SQLAlchemy(app)
SimpleLogin(app)
class Blogpost(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(50))
subtitle = db.Column(db.String(50))
author = db.Column(db.String(20))
date_posted = db.Column(db.DateTime)
content = db.Column(db.Text)
#app.route('/')
def index():
posts = Blogpost.query.order_by(Blogpost.date_posted.desc()).all()
return render_template('index.html', posts=posts)
#app.route('/about')
def about():
return render_template('about.html')
#app.route('/add')
def add():
if is_logged_in():
return render_template('add.html')
else:
return redirect('/')
#app.route('/post/<int:post_id>')
def post(post_id):
post = Blogpost.query.filter_by(id=post_id).one()
return render_template('post.html', post=post)
#app.route('/edit/<int:post_id>')
def edit(post_id):
post = Blogpost.query.filter_by(id=post_id).one()
if is_logged_in():
return render_template('edit.html', post=post)
else:
return redirect('/')
#app.route('/addpost', methods=['POST'])
def addpost():
title = request.form['title']
subtitle = request.form['subtitle']
author = request.form['author']
content = request.form['content']
post = Blogpost(title=title, subtitle=subtitle, author=author, content=content, date_posted=datetime.now())
db.session.add(post)
db.session.commit()
return redirect(url_for('index'))
#app.route('/deletepost/<int:post_id>', methods=['POST'])
def deletepost(post_id):
post = Blogpost.query.get_or_404(post_id)
db.session.delete(post)
db.session.commit()
return redirect(url_for('index'))
#app.route('/editpost/<int:post_id>', methods=['POST'])
def editpost(post_id):
post = Blogpost.query.get_or_404(post_id)
post.title = request.form['title']
post.subtitle = request.form['subtitle']
post.author = request.form['author']
post.content = request.form['content']
db.session.commit()
return redirect('/')
if __name__ == "__main__":
app.run(debug=True)