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‎ClassExamples/PJ128_AIML6m_Jan21/flask/flaskSQLite-SQLAlchemy-CRUD/app.py

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from flask import Flask, render_template, request, redirect, url_for, flash
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from flask_sqlalchemy import SQLAlchemy
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import os
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app = Flask(__name__)
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app.secret_key = "Secret Key"
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path = os.path.abspath( os.path.dirname(__file__))
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app.config['SQLALCHEMY_DATABASE_URI'] = "sqlite:///" + os.path.join(path , 'database.sqlite')
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app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
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''' if os isnot to be imported
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app = Flask(__name__)
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app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///students.sqlite3'
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'''
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db = SQLAlchemy(app)
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class Crud(db.Model):
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id = db.Column(db.Integer , primary_key = True)
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name = db.Column(db.String(100))
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email = db.Column(db.String(100))
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#phone = db.Column(db.String(100))
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def __init__(self, name, email, phone):
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self.name = name
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self.email = email
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#self.phone = phone
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@app.route('/')
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def index():
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all_data = Crud.query.all()
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return render_template("index.html", all_data = all_data)
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@app.route('/insert', methods = ['POST'])
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def insert():
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if request.method == 'POST':
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name = request.form['name']
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email = request.form['email']
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phone = request.form['phone']
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#check the validity of data
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my_data = Crud(name, email, phone)
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db.session.add(my_data)
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db.session.commit()
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flash("student Inserted Successfully")
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return redirect(url_for('index'))
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@app.route('/update', methods = ['POST'])
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def update():
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if request.method == "POST":
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my_date = Crud.query.get(request.form.get('id'))
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my_date.name = request.form['name']
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my_date.email = request.form['email']
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my_date.phone = request.form['phone']
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db.session.commit()
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flash("student Updated Successfully")
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return redirect(url_for('index'))
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@app.route('/delete/<id>/')
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def delete(id):
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my_data = Crud.query.get(id)
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db.session.delete(my_data)
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db.session.commit()
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flash("student Data Deleted Successfully")
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return redirect(url_for('index'))
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if __name__ == "__main__":
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app.run(debug = True)
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‎ClassExamples/PJ128_AIML6m_Jan21/flask/flaskSQLite-SQLAlchemy-CRUD/database.sqlite

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‎ClassExamples/PJ128_AIML6m_Jan21/flask/flaskSQLite-SQLAlchemy-CRUD/templates/base.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
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<script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
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<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
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<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
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<title> {% block title %} {% endblock %} </title>
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</head>
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<body>
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{% block body %} {% endblock %}
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</body>
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</html>

‎ClassExamples/PJ128_AIML6m_Jan21/flask/flaskSQLite-SQLAlchemy-CRUD/templates/header.html

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{% extends 'base.html' %}
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{% block title %} Flask SQLalchemy CRUD operation {% endblock %}
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{% block body %}
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<div class="jumbotron p-3 bg-dark">
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<div class="well text-center text-light">
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<h2>AIML6m- Python Flask CRUD Web Application </h2>
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</div>
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</div>
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{% endblock %}

‎ClassExamples/PJ128_AIML6m_Jan21/flask/flaskSQLite-SQLAlchemy-CRUD/templates/index.html

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<!-- Inheriting all linked files -->
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{% extends 'base.html' %}
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{% include 'header.html' %}
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<!-- head section -->
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{% block title %} Flask CRUD operation {% endblock %}
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<!-- Body section -->
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{% block body %}
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<div class="container">
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<div class="row">
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<div class="col-md-12">
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<div class="jumbotron p-3">
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<h3>Manage <b>Students</b> <button type="button" class="btn btn-success float-right" data-toggle="modal" data-target="#mymodal">Add new Student</button> </h3>
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{% with messages = get_flashed_messages() %}
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{% if messages %}
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{% for message in messages %}
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<div class="alert alert-success alert-dismissable" role="alert">
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<button type="button" class="close" data-dismiss="alert" aria-label="close">
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<span aria-hidden="true">
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x
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</span>
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</button> {{message}}
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</div>
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{% endfor %}
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{% endif %}
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{%endwith%}
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<table class="table table-hover table-dark">
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<tr>
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<th>ID</th>
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<th>Name</th>
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<th>Email</th>
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<th>Phone</th>
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<th>Action</th>
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</tr>
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{% for row in all_data %}
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<tr>
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<td>{{row.id}}</td>
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<td>{{row.name}}</td>
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<td>{{row.email}}</td>
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<td>{{row.phone}}</td>
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<td>
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<a href="/update/{{row.id}}" class="btn btn-info btn-xs" data-toggle="modal" data-target="#modaledit{{row.id}}">Edit</a>
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<a href="/delete/{{row.id}}" class="btn btn-danger btn-xs" onclick="return confirm('Are You sure To Delete ?')">Delete</a>
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</td>
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</tr>
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<!-- Model for updating student data -->
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<div id="modaledit{{row.id}}" class="modal fade" role="dialog">
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<div class="modal-dialog">
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<div class="modal-content">
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<div class="modal-header">
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<h4 class="modal-title"> Update student Data </h4>
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</div>
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<div class="modal-body">
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<form action="{{url_for('update')}}" method="POST">
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<div class="form-group">
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<label>Name</label>
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<input type="hidden" name="id" value="{{row.id}}">
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<input type="text" class="form-control" name="name" value="{{row.name}}" required="1">
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</div>
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<div class="form-group">
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<label>Email</label>
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<input type="email" class="form-control" name="email" value="{{row.email}}" required="1">
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</div>
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<div class="form-group">
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<label>Phone</label>
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<input type="number" class="form-control" name="phone" value="{{row.phone}}" required="1">
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</div>
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<div class="modal-footer">
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<button class="btn btn-info" type="submit"> Update</button>
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<button class="btn btn-secondary" data-dismiss="modal">Close</button>
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</div>
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</form>
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</div>
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</div>
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</div>
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</div>
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{% endfor %}
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</table>
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</div>
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<!-- Model for adding student -->
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<div id="mymodal" class="modal fade" role="dialog">
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<div class="modal-dialog">
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<div class="modal-content">
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<div class="modal-header">
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<h4 class="modal-title"> Add student </h4>
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</div>
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<div class="modal-body">
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<form action="{{url_for('insert')}}" method="POST">
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<div class="form-group">
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<label>Name</label>
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<input type="text" class="form-control" name="name" required="1">
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</div>
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<div class="form-group">
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<label>Email</label>
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<input type="email" class="form-control" name="email" required="1">
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</div>
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<div class="form-group">
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<label>Phone</label>
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<input type="number" class="form-control" name="phone" required="1">
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</div>
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<div class="modal-footer">
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<button class="btn btn-success" type="submit"> Add student </button>
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<button class="btn btn-secondary" data-dismiss="modal">Close</button>
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</div>
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</form>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</div>
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{% endblock %}

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