When customizing CONSUL, one of the most common actions is adding a new
field to a form.
This requires modifying the permitted/allowed parameters. However, in
most cases, the method returning these parameters returned an instance
of `ActionController::Parameters`, so adding more parameters to it
wasn't easy.
So customizing the code required copying the method returning those
parameters and adding the new ones. For example:
```
def something_params
params.require(:something).permit(
:one_consul_attribute,
:another_consul_attribute,
:my_custom_attribute
)
end
```
This meant that, if the `something_params` method changed in CONSUL, the
customization of this method had to be updated as well.
So we're extracting the logic returning the parameters to a method which
returns an array. Now this code can be customized without copying the
original method:
```
alias_method :consul_allowed_params, :allowed_params
def allowed_params
consul_allowed_params + [:my_custom_attribute]
end
```
19 lines
319 B
Ruby
19 lines
319 B
Ruby
class Admin::Widget::FeedsController < Admin::BaseController
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def update
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@feed = ::Widget::Feed.find(params[:id])
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@feed.update!(feed_params)
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head :ok
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end
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private
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def feed_params
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params.require(:widget_feed).permit(allowed_params)
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end
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def allowed_params
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[:limit]
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end
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end
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