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27 lines
865 B
Markdown
27 lines
865 B
Markdown
# Params Includes Submission Button Info
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When a form is submitted for a Rails app, the respective controller action
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will have access to a variety of information in the `params` hash. Included
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is an entry with the name and value of the button that submitted the form.
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By default, Rails will give the name `commit` to a submission button.
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```
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<%= f.submit %>
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# results in:
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<input type="submit" name="commit" value="Submit">Submit</input>
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```
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The corresponding `create` action will have parameters that include that
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submission button's info:
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```ruby
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# in create action
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> params['commit']
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=> 'Submit'
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```
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This is useful when you have multiple buttons that submit the same form, but
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should have slightly different results in the corresponding action.
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Differentiating becomes easy when you can easily check which was used to
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submit the form. No javascript required.
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