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Wednesday, July 7, 2021

Add Edit Delete Datatable Row Using Jquery Ajax Python Flask and PostgreSQL database

Add Edit Delete Datatable Row Using Jquery Ajax Python Flask and PostgreSQL database

install psycopg2 https://pypi.org/project/psycopg2/
Psycopg is the most popular PostgreSQL database adapter for the Python programming language.
(venv) PS C:\flaskmyproject> pip install psycopg2

CREATE TABLE employee (
id serial PRIMARY KEY,
name VARCHAR ( 100 ) NOT NULL,
position VARCHAR ( 100 ) NOT NULL,
office VARCHAR ( 100 ) NOT NULL
);

INSERT INTO
    employee(name, position, office)
VALUES
('Tiger Wood', 'Accountant', 'Tokyo'),
('Mark Oto Ednalan', 'Chief Executive Officer (CEO)', 'London'),
('Jacob thompson', 'Junior Technical Author', 'San Francisco'),
('cylde Ednalan', 'Software Engineer', 'Olongapo');
app.py
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#app.py
from flask import Flask, render_template, redirect, request, flash, jsonify
import psycopg2 #pip install psycopg2
import psycopg2.extras
     
app = Flask(__name__)
     
app.secret_key = "caircocoders-ednalan"
     
DB_HOST = "localhost"
DB_NAME = "sampledb"
DB_USER = "postgres"
DB_PASS = "admin"
         
conn = psycopg2.connect(dbname=DB_NAME, user=DB_USER, password=DB_PASS, host=DB_HOST)
     
@app.route('/')
def index():
    cur = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
    cur.execute("SELECT * FROM employee ORDER BY id")
    employee = cur.fetchall()
    return render_template('index.html', employee=employee)
  
@app.route("/ajax_add",methods=["POST","GET"])
def ajax_add():
    cur = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
    if request.method == 'POST':
        txtname = request.form['txtname']
        txtposition = request.form['txtposition']
        txtoffice = request.form['txtoffice']
        print(txtname)
        if txtname == '':
            msg = 'Please Input name' 
        elif txtposition == '':
           msg = 'Please Input Position' 
        elif txtoffice == '':
           msg = 'Please Input Office' 
        else:       
            cur.execute("INSERT INTO employee (name,position,office) VALUES (%s,%s,%s)",[txtname,txtposition,txtoffice])
            conn.commit()      
            cur.close()
            msg = 'New record created successfully'  
    return jsonify(msg)
  
@app.route("/ajax_update",methods=["POST","GET"])
def ajax_update():
    cur = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
    if request.method == 'POST':
        string = request.form['string']
        txtname = request.form['txtname']
        txtposition = request.form['txtposition']
        txtoffice = request.form['txtoffice']
        print(string)
        cur.execute("UPDATE employee SET name = %s, position = %s, office = %s WHERE id = %s ", [txtname, txtposition, txtoffice, string])
        conn.commit()      
        cur.close()
        msg = 'Record successfully Updated'  
    return jsonify(msg)   
  
@app.route("/ajax_delete",methods=["POST","GET"])
def ajax_delete():
    cur = conn.cursor(cursor_factory=psycopg2.extras.DictCursor)
    if request.method == 'POST':
        getid = request.form['string']
        print(getid)
        cur.execute('DELETE FROM employee WHERE id = {0}'.format(getid))
        conn.commit()      
        cur.close()
        msg = 'Record deleted successfully'  
    return jsonify(msg)
 
if __name__ == "__main__":
    app.run(debug=True)
templates/index.html
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//templates/index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Add Edit Delete Datatable Row Using Jquery Ajax Python Flask and PostgreSQL database</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
    $('[data-toggle="tooltip"]').tooltip();
    var actions = $("table td:last-child").html();
    // Append table with add row form on add new button click
    $(".add-new").click(function(){
        $(this).attr("disabled", "disabled");
        var index = $("table tbody tr:last-child").index();
        var row = '<tr>' +
            '<td><input type="text" class="form-control" name="name" id="txtname"></td>' +
            '<td><input type="text" class="form-control" name="position" id="txtposition"></td>' +
            '<td><input type="text" class="form-control" name="office" id="txtoffice"></td>' +
        '<td>' + actions + '</td>' +
        '</tr>';
        $("table").append(row); 
        $("table tbody tr").eq(index + 1).find(".add, .edit, .delete").toggle();
        $('[data-toggle="tooltip"]').tooltip();
  
    });
    
    // Add row on add button click
    $(document).on("click", ".add", function(){
        var empty = false;
        var input = $(this).parents("tr").find('input[type="text"]');
        input.each(function(){
            if(!$(this).val()){
                $(this).addClass("error");
                empty = true;
            } else{
                $(this).removeClass("error");
            }
        });
        var txtname = $("#txtname").val();
        var txtposition = $("#txtposition").val();
        var txtoffice = $("#txtoffice").val();
        $.post("/ajax_add", { txtname: txtname, txtposition: txtposition, txtoffice: txtoffice}, function(data) {
            $("#displaymessage").html(data);
            $("#displaymessage").show();
        });
        $(this).parents("tr").find(".error").first().focus();
        if(!empty){
            input.each(function(){
                $(this).parent("td").html($(this).val());
            });  
            $(this).parents("tr").find(".add, .edit, .delete").toggle();
            $(".add-new").removeAttr("disabled");
        }
    });
    // Delete row on delete button click
    $(document).on("click", ".delete", function(){
        $(this).parents("tr").remove();
        $(".add-new").removeAttr("disabled");
        var id = $(this).attr("id");
        var string = id;
        $.post("/ajax_delete", { string: string}, function(data) {
            $("#displaymessage").html(data);
            $("#displaymessage").show();
        });
    });
    // update rec row on edit button click
    $(document).on("click", ".update", function(){
        var id = $(this).attr("id");
        var string = id;
        var txtname = $("#txtname").val();
        var txtposition = $("#txtposition").val();
        var txtoffice = $("#txtoffice").val();
        $.post("/ajax_update", { string: string,txtname: txtname, txtposition: txtposition, txtoffice: txtoffice}, function(data) {
            $("#displaymessage").html(data);
            $("#displaymessage").show();
        });
          
          
    });
    // Edit row on edit button click
    $(document).on("click", ".edit", function(){ 
        $(this).parents("tr").find("td:not(:last-child)").each(function(i){
            if (i=='0'){
                var idname = 'txtname';
            }else if (i=='1'){
                var idname = 'txtposition';
            }else if (i=='2'){
                var idname = 'txtoffice';
            }else{}
            $(this).html('<input type="text" name="updaterec" id="' + idname + '" class="form-control" value="' + $(this).text() + '">');
        }); 
        $(this).parents("tr").find(".add, .edit").toggle();
        $(".add-new").attr("disabled", "disabled");
        $(this).parents("tr").find(".add").removeClass("add").addClass("update");
    });
});
</script>
</head>
<body>
    <div class="container"><p><h1 align="center">Add Edit Delete Datatable Row Using Jquery Ajax Python Flask and PostgreSQL database</h1></p>
        <div class="table-wrapper">
            <div class="table-title">
                <div class="row">
                    <div class="col-sm-8"><h2>Employee <b>Details</b></h2></div>
                    <div class="col-sm-4">
                        <button type="button" class="btn btn-info add-new"><i class="fa fa-plus"></i> Add New</button>
                    </div>
                    <div class='btn btn-info' id="displaymessage" style="display:none;width:100%;margin-top:10px;"></div>
                </div>
            </div>
   <table class="table table-bordered">
                <thead>
                    <tr>
                        <th>Name</th>
                        <th>Position</th>
                        <th>Office</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    {% for row in employee %}   
                    <tr>
                        <td>{{row.name}}</td>
                        <td>{{row.position}}</td>
                        <td>{{row.office}}</td>
                        <td>
                            <a class="add" title="Add" data-toggle="tooltip" id="{{row.id}}"><i class="fa fa-user-plus"></i></a>
                            <a class="edit" title="Edit" data-toggle="tooltip" id="{{row.id}}"><i class="fa fa-pencil"></i></a>
                            <a class="delete" title="Delete" data-toggle="tooltip" id="{{row.id}}"><i class="fa fa-trash-o"></i></a>
                        </td>
                    </tr>  
                    {% endfor %}   
                </tbody>
            </table>
        </div>
    </div>    
<style type="text/css">
    body {
        color: #404E67;
        background: #F5F7FA;
  font-family: 'Open Sans', sans-serif;
 }
 .table-wrapper {
  width: 700px;
  margin: 30px auto;
        background: #fff;
        padding: 20px;
        box-shadow: 0 1px 1px rgba(0,0,0,.05);
    }
    .table-title {
        padding-bottom: 10px;
        margin: 0 0 10px;
    }
    .table-title h2 {
        margin: 6px 0 0;
        font-size: 22px;
    }
    .table-title .add-new {
        float: right;
  height: 30px;
  font-weight: bold;
  font-size: 12px;
  text-shadow: none;
  min-width: 100px;
  border-radius: 50px;
  line-height: 13px;
    }
 .table-title .add-new i {
  margin-right: 4px;
 }
    table.table {
        table-layout: fixed;
    }
    table.table tr th, table.table tr td {
        border-color: #e9e9e9;
    }
    table.table th i {
        font-size: 13px;
        margin: 0 5px;
        cursor: pointer;
    }
    table.table th:last-child {
        width: 100px;
    }
    table.table td a {
  cursor: pointer;
        display: inline-block;
        margin: 0 5px;
  min-width: 24px;
    }  
 table.table td a.add {
        color: #27C46B;
    }
    table.table td a.edit {
        color: #FFC107;
    }
    table.table td a.delete {
        color: #E34724;
    }
    table.table td i {
        font-size: 19px;
    }
 table.table td a.add i {
        font-size: 24px;
     margin-right: -1px;
        position: relative;
        top: 3px;
    }   
    table.table .form-control {
        height: 32px;
        line-height: 32px;
        box-shadow: none;
        border-radius: 2px;
    }
 table.table .form-control.error {
  border-color: #f50000;
 }
 table.table td .add {
  display: none;
 }
</style>   
</body>
</html>

Posted by ednalan at 4:47 PM . Under , .

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