I want to seed "Location" data for my user object from my seed file
The c# object, where Point is a NetTopologySuite.Geometries.Point is part of my user object
public class User: IdentityUser<int> {
// member data here
public Point Location { get; set; } // has lat/lng data points
}
I seed data to my db on startup by doing something like this
public void SeedUsers()
{
if (!_userManager.Users.Any())
{
var userData = System.IO.File.ReadAllText("Data/UserSeedData.json");
var users = JsonConvert.DeserializeObject<List<User>>(userData);
var roles = new List<Role>
{
new Role{Name = "Member"},
new Role{Name = "Admin"},
new Role{Name = "Moderator"},
new Role{Name = "VIP"},
};
foreach (var role in roles)
{
_roleManager.CreateAsync(role).Wait();
}
foreach (var user in users)
{
user.Photos.SingleOrDefault().IsApproved = true;
_userManager.CreateAsync(user, "password").Wait();
_userManager.AddToRoleAsync(user, "Member").Wait();
}
}
}
with a json file "UserSeedData.json" of json arrays like this and I want to be able to stick some kind of 'Location' data in there that is representative of lng/lat data points.
{
"Email": "[email protected]",
"Username": "Lola",
"Gender": "female",
"DateOfBirth": "1994-02-21",
"Password": "password",
"Created": "2017-08-02",
"LastActive": "2017-08-02",
"Introduction": "blah blah blah",
"LookingFor": "blah blah blah",
"City": "San Francisco",
"Country": "United States",
"Longitude": -122.431297,
"Latitude": 37.773972,
"Location": // something here!!!
"Photos": [{
"url": "https://randomuser.me/api/portraits/women/3.jpg",
"isMain": true,
"description": "Non deserunt labore sunt ex laboris et adipisicing ullamco officia minim."
}]
}
Now I know in my seed method I could do something like this, but I'm looking for a way to include it in my .json file, so I can use different data points
foreach (var user in users)
{
user.Photos.SingleOrDefault().IsApproved = true;
user.Location = new Point(-122.4194155, 37.7749295) { SRID = 4326 };
_userManager.CreateAsync(user, "password").Wait();
_userManager.AddToRoleAsync(user, "Member").Wait();
}
You could subclass NetTopologySuite.Geometries.Point and add a [JsonConstructor] to parse your json file. It should be a straightforward substitution for the rest of your code.
public class MyPoint : Point
{
[JsonConstructor]
public MyPoint(double latitude, double longitude, int srid)
:base(new GeoAPI.Geometries.Coordinate(longitude, latitude))
{
SRID = srid;
}
}
Note that latitude = y and longitude = x so the order is reversed.
Swap MyPoint for Point in your User class
public class User: IdentityUser<int> {
// member data here
public MyPoint Location { get; set; }
}
And it should work with your json as is.
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