Flask Request Object




  • In the client-server architecture, the request object contains all the data that is sent from the client to the server.
  • Now we will discuss the Request object and its important attributes
    • Form : Contains the key-value pair of form parameters and their values.
    • Args : It is the part of the URL which is specified in the URL after question mark (?).
    • Cookies : It is saved at the client-side to track the user session.
    • Files: It contains the data related to the uploaded file.
    • Method: It is the current request method (get or post).

Form data retrieval on the template

  • The data filled in this form is posted to the /success URL which triggers the print_data() function.
  • print_data() collects all the data from the request object and the renders the result_data.html file which shows all the data on the web page.
 Flask Object

Flask Request Object

script.py

from flask import *  
app = Flask(__name__)  
  
@app.route('/')  
def customer():  
   return render_template('customer.html')  
  
@app.route('/success',methods = ['POST', 'GET'])  
def print_data():  
   if request.method == 'POST':  
      result = request.form  
      return render_template("result_data.html",result = result)  
   
if __name__ == '__main__':  
   app.run(debug = True)  

customer.html

<html>  
   <body>  
       <h3>Register the customer, fill the following form.</h3>  
      <form action = "http://localhost:5000/success" method = "POST">  
         <p>Name <input type = "text" name = "name" /></p>  
         <p>Email <input type = "email" name = "email" /></p>  
         <p>Contact <input type = "text" name = "contact" /></p>  
         <p>Pin code <input type ="text" name = "pin" /></p>  
         <p><input type = "submit" value = "submit" /></p>  
      </form>  
   </body>  
</html>  

result_data.html

<!doctype html>  
<html>  
   <body>  
      <p><strong>Thanks for the registration. Confirm your details</strong></p>  
      <table border = 1>  
         {% for key, value in result.items() %}  
            <tr>  
               <th> {{ key }} </th>  
               <td> {{ value }} </td>  
            </tr>  
         {% endfor %}  
      </table>  
   </body>  
</html>  

Output

  • To run this application, we must first run the script.py file using the command python script.py.
 Flask Object

Flask Object

  • Now, hit the submit button. It will transfer to the /success URL and displays the data entered at the client.
 Flask Object1

Flask Object

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