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In the previous video, we already create a
verify config menu.

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Now in this video, we are going to create log menu.

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Okay let’s just start. Open the visual studio code. First, let’s create a models for Log.

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Here I will copy paste from my note.

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Here we have some column in the log models.
Target will be used to store the ip address of the router.

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Action will be configure or
verify config. And status will be success or failed.

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We have time here, this column
will show us when the action is executed.

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Finally we have a message here. This column will show us the message if the action is failed.

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Because we doing a modification in the models.py
file, so we need to doing a migration.

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Open the command prompt, stop the server, and do
a makemigration.

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Next let’s do a migrate.

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Okay, now let’s run the server again

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Now let’s go to views.py file. Here we will
doing a manipulation in the configure & verify_config function.

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If we see here, the script will
try to login to the device and send the command.

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When try to login to the router, there is
a chance that we got an error, either we use

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a wrong IP Address or may be we have a wrong
username and password.

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So we need to use try in here.

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And then here, we need to use except.

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Except block will be executed if we got an error in the try block. Here we will write a script to add data to

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the log database that the action is failed.

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I will just copy and paste the script from my note.

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Here we add a data to the log database. But we need to import Log first.

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Here the target will be the ip address of
the router, dev is the variable that we already defined before.

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Then the action will be configure, because we doing a manipulation in the configure function.

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The status will be error. The time
will be datetime.now, and the message will be e,

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which is the variable that save the
exception message.

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Here we can see that we use datetime function, so we need to import it first.

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Until now, we only add data to log database when the program is failed,

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but if the program is success, we don’t add data to log database. Now let’s write a script to add data to

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the log database when the program is success.
We can just copy and paste this script.

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Let’s change the status to success,

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and the message is “no error”, because the program is running successfully.

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Okay now we have done in the configure function. Let’s copy and paste this script to the verify_config function.

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Let’s change the action to verify config.

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Now, let’s create a page to show the log.
Open urls.py file, here let’s create a new url, let’s say log.

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And this url will be
redirected to log function inside views.py.

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Now let’s create log function in the views.py.

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Let’s create a variable to save all of logs from the database.

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Next let’s create a context to pass the
variable to the template.

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And finally return the template file and the context.

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Now let’s create the template file. I already
upload the log.html file in the resources section.

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So you can just download it and put
it in the templates directory.

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Okay now we have log.html file here. Open
the browser, and navigate to 127.0.0.1:8000/log.

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Okay now we have log page here. But we don’t have any log yet, because we don’t do any action for now.

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In the next video, we are going to test our
application, so we will get a log in here.

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Thankyou for watching and see you on the next
video!