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Python Flask with SQLAlchemy Basics Connecting to a Database with SQLAlchemy Working with a Plant Database

Posted by Chris Loach
Chris Loach
4,024 Points

I'm really struggling to get to grips with what I'm doing wrong.. Please help!

I'm struggling with replacing the plant type & status using the double curly brackets..

With all the plants passed into the index.html template, it's time to put them to use. Inside of index.html there is a <div> tag with the plant type and status inside of it. Wrap this div inside of a Flask for loop. {% for plant in plants %} before the div and then {% endfor %} after it. Replace plant type and status with the info from the database using double curly brackets.

app.py 
from models import db, Plant, app
from flask import render_template, url_for, request, redirect


@app.route('/')
def index():
    plants = Plant.query.all()
    return render_template('index.html', plants=plants)


@app.route('/form', methods=['GET', 'POST'])
def form():
    if request.form:
        new_plant = Plant(plant_type=request.form['type'], 
                          plant_status=request.form['status'])
        db.add(new_plant)
        db.commit()
        return redirect(url_for('index'))
    return render_template('form.html')

@app.route('/delete')
def delete():
    return redirect(url_for('index'))


if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8000)
models.py 
from flask import Flask
from flask_sqlalchemy import SQLAlchemy


app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///plants.db'
db = SQLAlchemy(app)

class Plant(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    plant_type = db.Column(db.String())
    plant_status = db.Column(db.String())
form.html 
{% extends 'layout.html' %}

{% block content %}
    <form action="{{ url_form('form') }}" method="POST">
        <label for="type">Plant Type:</label>
        <input type="text" name="type" id="type" placeholder="Plant type">

        <p>Plant Status:</p>
        <label for="good">GOOD</label>
        <input type="radio" name="status" id="good">
        <label for="ok">OK</label>
        <input type="radio" name="status" id="ok">
        <label for="bad">BAD</label>
        <input type="radio" name="status" id="bad">
    </form>
{% endblock %}
index.html 
{% extends 'layout.html' %}

{% block content %}
    <h1>Our Plants:</h1>
{% for plant in plants %}
<div>
        <h2>{{ plant_type }}</h2>
        <p>{{ plant_status }}</p>
    </div>
{% endfor %}
{% endblock %}

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there, Chris Loach ! You are super close. You're sending in plants which is the result of all plants. Each plant has three fields: an id, a plant_type, and a plant_status. Remember that these are part of the plant. So instead of just plant_type and plant_status you would need plant.plant_type and plant.plant_status.

Hope this helps! :sparkles: