Align code and docs for unconventional foreign keys (#737)

Author: jasonmccreary

src/Generators/MigrationGenerator.php

@@ -275,12 +275,11 @@ protected function buildForeignKey(string $column_name, ?string $on, string $typ
             $column = Str::afterLast($column_name, '_');
         } elseif (Str::contains($on, '.')) {
             [$table, $column] = explode('.', $on);
-            $table = Str::snake($table);
         } elseif (Str::contains($on, '\\')) {
-            $table = Str::lower(Str::plural(Str::afterLast($on, '\\')));
+            $table = Str::snake(Str::plural(Str::afterLast($on, '\\')));
             $column = Str::afterLast($column_name, '_');
         } else {
-            $table = Str::plural($on);
+            $table = Str::snake(Str::plural($on));
             $column = Str::afterLast($column_name, '_');
         }
 
@@ -315,12 +314,15 @@ protected function buildForeignKey(string $column_name, ?string $on, string $typ
             if ($on_delete_clause === 'cascade') {
                 $on_delete_suffix = '->cascadeOnDelete()';
             }
+
             if ($on_update_clause === 'cascade') {
                 $on_update_suffix = '->cascadeOnUpdate()';
             }
+
             if ($column_name === Str::singular($table) . '_' . $column) {
                 return self::INDENT . "{$prefix}->constrained(){$on_delete_suffix}{$on_update_suffix}";
             }
+
             if ($column === 'id') {
                 return self::INDENT . "{$prefix}->constrained('{$table}'){$on_delete_suffix}{$on_update_suffix}";
             }

tests/fixtures/drafts/unconventional-foreign-key.yaml

@@ -1,7 +1,7 @@
 models:
   State:
     name: string
-    countries_id: id foreign:countries
-    country_code: string foreign:countries
-    ccid: string foreign:countries
+    countries_id: id foreign:country
+    country_code: string foreign:Country
+    ccid: string foreign:country.id
     c_code: string foreign:countries.code

tests/fixtures/factories/unconventional-foreign-key.php

@@ -25,7 +25,7 @@ public function definition(): array
             'name' => fake()->name(),
             'countries_id' => Country::factory(),
             'country_code' => Country::factory()->create()->code,
-            'ccid' => Country::factory()->create()->ccid,
+            'ccid' => Country::factory(),
             'c_code' => Country::factory()->create()->code,
         ];
     }

tests/fixtures/migrations/unconventional-foreign-key.php

@@ -20,7 +20,7 @@ public function up(): void
             $table->string('country_code');
             $table->foreign('country_code')->references('code')->on('countries');
             $table->string('ccid');
-            $table->foreign('ccid')->references('ccid')->on('countries');
+            $table->foreign('ccid')->references('id')->on('country');
             $table->string('c_code');
             $table->foreign('c_code')->references('code')->on('countries');
             $table->timestamps();