ENH: rename ignorefk to ignore_cols

Author: ksindi

README.md

@@ -9,7 +9,7 @@ What's different:
   * Flask-SQLAlchemy columns are used (e.g. `db.Integer`).
   * Metadata is only implicit in tables
 * Defaults to generating backrefs in relationships. `--nobackref` still included as option in case backrefs are not wanted. 
-* Naming of backrefs is the class name is snake_case (as opposed to CamelCase) and is pluralized if it's Many-to-One or Many-to-Many using <a href="https://pypi.python.org/pypi/inflect">inflect</a>.
+* Naming of backrefs is class name in snake_case (as opposed to CamelCase) and is pluralized if it's Many-to-One or Many-to-Many using <a href="https://pypi.python.org/pypi/inflect">inflect</a>.
 * Generate explicit primary joins. I deal with pretty complicated tables that need explicit primary joins.
 * If column has a server_default set it to `FetchValue()` instead of trying to determine what that value is. Original code did not set the right server defaults in my set up.
-* `--ignorefk` ignores special name columns (e.g. id, inserted, updated) when generating association tables. Original code requires all columns to be foreign keys in order to generate association table. Example: `--ignorefk id,inserted,updated`.
+* `--ignore-cols` ignores special columns (e.g. id, inserted, updated) when generating association tables. Original code requires all columns to be foreign keys in order to generate association table. Example: `--ignore-cols id,inserted,updated`.

sqlacodegen/codegen.py

@@ -527,7 +527,7 @@ class CodeGenerator(object):
 
     def __init__(self, metadata, noindexes=False, noconstraints=False,
                  nojoined=False, noinflect=False, nobackrefs=False,
-                 flask=False, fkcols=None):
+                 flask=False, ignore_cols=None):
         super(CodeGenerator, self).__init__()
 
         if noinflect:
@@ -537,7 +537,7 @@ def __init__(self, metadata, noindexes=False, noconstraints=False,
             inflect_engine = inflect.engine()
 
         # exclude these column names from consideration when generating association tables
-        _special_columns = fkcols or []
+        _ignore_columns = ignore_cols or []
 
         self.flask = flask
         if not self.flask:
@@ -551,7 +551,7 @@ def __init__(self, metadata, noindexes=False, noconstraints=False,
             # Link tables have exactly two foreign key constraints and all columns are involved in them
             # except for special columns like id, inserted, and updated
             fk_constraints = [constr for constr in table.constraints if isinstance(constr, ForeignKeyConstraint)]
-            if len(fk_constraints) == 2 and all(col.foreign_keys for col in table.columns if col.name not in _special_columns):
+            if len(fk_constraints) == 2 and all(col.foreign_keys for col in table.columns if col.name not in _ignore_columns):
                 association_tables.add(table.name)
                 tablename = sorted(fk_constraints, key=_get_constraint_sort_key)[0].elements[0].column.table.name
                 links[tablename].append(table)

sqlacodegen/main.py

@@ -36,9 +36,7 @@ def main():
     parser.add_argument('--outfile', help='file to write output to (default: stdout)')
     parser.add_argument('--nobackrefs', action='store_true', help="don't include backrefs")
     parser.add_argument('--flask', action='store_true', help="use Flask-SQLAlchemy columns")
-    parser.add_argument('--ignorefk', help="Don't check fk constraints on specified columns (comma-separated)")
-    # parser.add_argument('--outfile', type=argparse.FileType('w'), default=sys.stdout,
-    #                     help='file to write output to (default: stdout)')
+    parser.add_argument('--ignore-cols', help="Don't check fk constraints on specified columns (comma-separated)")
     args = parser.parse_args()
 
     if args.version:
@@ -53,10 +51,10 @@ def main():
     import_dialect_specificities(engine)
     metadata = MetaData(engine)
     tables = args.tables.split(',') if args.tables else None
-    fkcols = args.ignorefk.split(',') if args.ignorefk else None
+    ignore_cols = args.ignore_cols.split(',') if args.ignore_cols else None
     metadata.reflect(engine, args.schema, not args.noviews, tables)
     outfile = codecs.open(args.outfile, 'w', encoding='utf-8') if args.outfile else sys.stdout
     generator = CodeGenerator(metadata, args.noindexes, args.noconstraints,
                               args.nojoined, args.noinflect, args.nobackrefs,
-                              args.flask, fkcols)
+                              args.flask, ignore_cols)
     generator.render(outfile)