Views Default Contextual Filter I want to create a view that will allow the user to pass a filter value using the URL, but if the filter is missing, assign a default value.  The view's path is set to results. I created a view page and added a contextual filter that uses the URL to retrieve the value results/somevalue.  Some value will filter the view based on it's value.  What I can't figure out is if the user browses to the default page, results, how do I set a default value?  

I tried creating a second page based on the first, using the same path. When I did this, users could not browse to results/somevalue.
I would suggest a small trick with contextual filters. 

After adding a filter:


You could simply select and fill the 'Provide default value' field.
Here you have many options to mention the default value. The one which should work for you is: "Raw value from URL"


Alternative:  


Set 'WHEN THE FILTER VALUE IS NOT AVAILABLE' to (Display contents of "No results found")  
Select 'Allow multiple values' option at the bottom (by clicking on more)  
Now you should pass two filter with the URL 


Your default filter  
Filter which user will add to url.  

So your default url should always include the default parameter (filter).  
Once this is done, when there is no value for the user's filter view should filter the results based on the default filter.