Increasing counter in database

Question

I have field called ads_counter in my database, and I need to increase its value each time when this ad is rendered. I tried to write a custom method and use it in the controller responsible for this data, but that didn't work. Are there any built-in methods to increase the value of a field in the database?

Accepted Answer

Yes, there is the `increment` method that you can call in your ActiveRecord.

For reference: increment

Edit:

To make it save directly use the `increment!`

You may use it this way:

```
instance.increment!(:ads_counter)
```

It automatically increments by 1

```
instance.increment!(:ads_counter, <number>)
```

It increments by number provided

Increasing counter in database

Solution

Problem