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POhandling geographic locations dynamically
 

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    <p>I've built a website for vacation rentals and housing for rent. I've created a page where users can add locations themselves (up to 6 levels deep) but I have come across a problem. A user may add a location ie:</p> <p>North America -> United States -> California -> San Francisco</p> <p>Another user may arrive and add an area under SF which he assumes to be under SF ( say Silver Terrace ). Yet another user could add that same area but he would not look under SF and would add to be a brother node of SF</p> <p>North America -> United States -> California -> Silver Terrace</p> <p>So now we would have:</p> <p>North America -> United States -> California -> San Francisco -> Silver Terrace<br> North America -> United States -> California -> Silver Terrace</p> <p>which is of course a duplicate =/ I could tell the user adding Silver Terrace the second time that it already exists but the first user may have placed it incorrectly which causes a problem.</p> <p>Even if I were to not allow users to add locations and I would do it myself or limit it to a few users, it would still be very difficult to correctly add all locations.</p> <p>In other countries there also comes the question of including or not including the state/district/region and so on to be part of the path for locations...</p> <p>I've read quite a few posts about this but I can't wrap my head around a good solution.</p> <p>It is difficult to eliminate locations altogether because I use them for subdomains ie. san-francisco.example.com or california.example.com . Locations also allow users to browse by country/state/city/area/neighborhood/etc if a user doesn't want to (or can't) do so using a map.</p> <p>I don't think there is a perfect answer for this but if you've got some suggestions, please let me know. Thank you so much.</p>
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