About Lesson
In this Flask CRUD Application lesson we are going to learn about Flask CRUD Application Retrieving Data from MySQL, so we have learned that how you can insert data to your MySQL database, now it is time to retrieve the data from the MySQL database and show them in our table.
Open your App.py file and bring changes to your Index route, basically in here first we are going to get our all data from the mysql database and after that we send the data via context variable to our index.html file.
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@app.route('/') def Index(): all_data = Data.query.all() return render_template("index.html", employees=all_data) |
This is the complete code for App.py file.
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from flask import Flask, render_template, redirect, flash, \ request, url_for from flask_sqlalchemy import SQLAlchemy #create the object of Flask app = Flask(__name__) app.secret_key = "geekscoderssecretkey" #SqlAlchemy Database Configuration With Mysql app.config['SQLALCHEMY_DATABASE_URI'] = 'mysql://root:''@localhost/crud' app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False db = SQLAlchemy(app) # Creating model table for our CRUD database class Data(db.Model): id = db.Column(db.Integer, primary_key=True) name = db.Column(db.String(100)) email = db.Column(db.String(100)) phone = db.Column(db.String(100)) def __init__(self, name, email, phone): self.name = name self.email = email self.phone = phone #creating our routes @app.route('/') def Index(): all_data = Data.query.all() return render_template("index.html", employees=all_data) # this route is for inserting data # to mysql database via html forms @app.route('/insert', methods=['POST']) def insert(): if request.method == 'POST': name = request.form['name'] email = request.form['email'] phone = request.form['phone'] my_data = Data(name, email, phone) db.session.add(my_data) db.session.commit() flash("Employee Inserted Successfully") return redirect(url_for('Index')) #run flask app if __name__ == "__main__": app.run(debug=True) |
Now open your index.html file, in here using for loop we want to iterate over the data and after that we show our data in the table.
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{% for row in employees %} <tr> <td>{{row.id}}</td> <td>{{row.name}}</td> <td>{{row.email}}</td> <td>{{row.phone}}</td> |
This is the complete code for index.html file.
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{% extends 'base.html' %} {% include 'header.html' %} {% block title %}Flask CRUD Application {% endblock %} {% block body %} <div class="container"> <div class="row"> <div class="col md-12"> <div class="jumbotron p-3"> <h2>Manage <b>Employees </b> <button class="btn btn-success float-right" data-target="#mymodal" data-toggle="modal" type="button">Add New Employees </button> </h2> {% with messages = get_flashed_messages() %} {% if messages %} {% for message in messages %} <div class="alert alert-success alert-dismissable" role="alert"> <button type="button" class="close" data-dismiss="alert" aria-label="close"> <span aria-hidden="true">x</span> </button> {{message}} </div> {% endfor %} {% endif %} {% endwith %} <table class="table table-hover table-dark"> <tr> <th>ID</th> <th>Name</th> <th>Email</th> <th>Phone</th> <th>Action</th> </tr> {% for row in employees %} <tr> <td>{{row.id}}</td> <td>{{row.name}}</td> <td>{{row.email}}</td> <td>{{row.phone}}</td> <td> <a class="btn btn-warning btn-xs" data-target="#modaledit" data-toggle="modal" href=""> Edit</a> <a class="btn btn-danger btn-xs" href="" onclick="return confirm('Are You Sure To Delete ?')"> Delete </a> </td> </tr> <!-- Modal Edit Employee--> <div class="modal fade" id="modaledit" role="dialog"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <h4 class="modal-title">Update Information</h4> </div> <div class="modal-body"> <form action="" method="POST"> <div class="form-group"> <label>Name:</label> <input name="id" type="hidden" value=""> <input class="form-control" name="name" type="text" value="Geekscoders"> </div> <div class="form-group"> <label>Email:</label> <input class="form-control" name="email" type="text" value="geeks@gmail.com"> </div> <div class="form-group"> <label>Phone:</label> <input class="form-control" name="phone" type="text" value="858558"> </div> <div class="form-group"> <button class="btn btn-primary" type="submit">Update</button> </div> </form> </div> <div class="modal-footer"> <button class="btn btn-secondary" data-dismiss="modal" type="button">Close</button> </div> </div> </div> </div> {% endfor %} </table> </div> <!-- Modal Add Employee--> <div class="modal fade" id="mymodal" role="dialog"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <h4 class="modal-title">Add Employee</h4> </div> <div class="modal-body"> <form action="{{url_for('insert')}}" method="POST"> <div class="form-group"> <label>Name:</label> <input class="form-control" name="name" required="1" type="text"> </div> <div class="form-group"> <label>Email:</label> <input class="form-control" name="email" required="1" type="email"> </div> <div class="form-group"> <label>Phone:</label> <input class="form-control" name="phone" required="1" type="number"> </div> <div class="form-group"> <button class="btn btn-primary" type="submit">Add Employee</button> </div> </form> </div> <div class="modal-footer"> <button class="btn btn-secondary" data-dismiss="modal" type="button">Close</button> </div> </div> </div> </div> </div> </div> </div> {% endblock %} |
Run your application and you can see our data from mysql database in the table.
templates/base.html
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<!DOCTYPE html> <html lang="en"> <head> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"> <meta charset="UTF-8"> <title>{% block title %} {% endblock %} </title> </head> <body> {% block body %} {% endblock %} <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js"> </script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"> </script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"> </script> </body> </html> |
templates/header.html
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{% extends 'base.html' %} {% block title %} Flask CRUD {% endblock %} {% block body %} <div class="jumbotron p-3"> <div class="well text-center"> <h1>Flask CRUD Application - Geekscoders.com</h1> </div> </div> {% endblock %} |
