How to toggle index view with "where" in Rails - html

Question

I have a table with multiple columns. One is boolean. I have this in my controller:
def index
#matchings = Matching.where(match: '1')
end
I only want to have lines with the corresponding value of 1 for the "match" column because usually lines with a value of "0" aren't important. However, I'm wondering whether there is a way to toggle the view without having to go into the controller and edit the def index every time.
Any ideas?

Answer 1

If you just would like to toggle it manually, you can just type
localhost:3000/controllername/index?match=0
or
localhost:3000/controllername/index?match=1
if you want to add it from your view you can make a form like this
<form class="smart-form">
<fieldset>
<section class="col col-3">
<label class="label font-sm">Toggle view</label>
<select class="form-control input-sm" name= "match">
<option value="0">View 1</option>
<option value="1">View 2</option>
</select><i></i>
</section>
</fieldset>
<footer>
<button type="submit" class="btn btn-primary">Submit</button>
</footer>
</form>
and in your controller type the following
def index
#matchings = Matching.where(:match => params[:match])
end
I assume that match is something defined at your model.
Thank you

Answer 2

Just use a query string. Whenever you want to load it with
match: '1'
add
?match=1
to the request and whenever you want it with
match: '0'
add
?match=0
to the request. For example:
/some/index/page?match=1
or
/some/index/page?match=0.
Then in the controller use:
def index
#matchings = Matching.where(match: match)
end
private
def match
params.require(:match) # reads the value of the `match` param in the query string
end
For what it's worth, you can write migrations to create boolean columns. (TINYINT in most SQL databases.) Using that, your queries can be changed to
Matching.where(match: true||false)
which makes a bit more sense for this purpose.
Also, I would avoid naming a column "match" altogether. match is a frequently used Ruby method, and it's best to avoid using common method names like that.