kdeng00
90 lines
2.2 KiB
C#
90 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Microsoft.EntityFrameworkCore;
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using Icarus.Models;
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namespace Icarus.Database.Contexts
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{
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public class SongContext : DbContext
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{
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public DbSet<Song> Songs { get; set; }
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public SongContext(string connString) : base(new DbContextOptionsBuilder<SongContext>()
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.UseMySQL(connString).Options)
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{
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}
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public SongContext(DbContextOptions<SongContext> options) : base(options) { }
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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modelBuilder.Entity<Song>()
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.ToTable("Song");
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/**
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modelBuilder.Entity<Song>()
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.HasOne(s => s.Album)
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.WithMany(al => al.Songs)
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.HasForeignKey(s => s.AlbumID)
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.OnDelete(DeleteBehavior.SetNull);
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modelBuilder.Entity<Song>()
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.HasOne(sa => sa.SongArtist)
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.WithMany(ar => ar.Songs)
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.HasForeignKey(s => s.ArtistID)
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.OnDelete(DeleteBehavior.SetNull);
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modelBuilder.Entity<Song>()
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.HasOne(s => s.SongGenre)
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.WithMany(gnr => gnr.Songs)
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.HasForeignKey(s => s.GenreID)
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.OnDelete(DeleteBehavior.SetNull);
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modelBuilder.Entity<Song>()
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.HasOne(s => s.SongYear)
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.WithMany(yr => yr.Songs)
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.HasForeignKey(s => s.YearID)
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.OnDelete(DeleteBehavior.SetNull);
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modelBuilder.Entity<Song>()
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.HasOne(s => s.SongCoverArt)
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.WithMany(ca => ca.Songs)
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.HasForeignKey(s => s.CoverArtID)
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.OnDelete(DeleteBehavior.SetNull);
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*/
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modelBuilder.Entity<Song>()
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.Property(s => s.Year)
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.IsRequired(false);
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modelBuilder.Entity<Song>()
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.Property(s => s.GenreID)
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.IsRequired(false);
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modelBuilder.Entity<Song>()
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.Property(s => s.ArtistID)
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.IsRequired(false);
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modelBuilder.Entity<Song>()
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.Property(s => s.AlbumID)
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.IsRequired(false);
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modelBuilder.Entity<Song>()
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.Property(s => s.CoverArtID)
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.IsRequired(false);
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}
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public Song RetrieveRecord(Song song)
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{
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return Songs.FirstOrDefault(sng => sng.SongID == song.SongID);
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}
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public bool DoesRecordExist(Song song)
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{
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return Songs.FirstOrDefault(sng => sng.SongID == song.SongID) != null ? true : false;
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}
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}
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}
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