Merge pull request #903 from ansible/item_copy

Implement item copy feature

tools/scripts/list_fields.py

@@ -0,0 +1,46 @@
+__all__ = ['pretty_print_model_fields']
+
+
+def _get_class_full_name(cls_):
+    return cls_.__module__ + '.' + cls_.__name__
+
+
+class _ModelFieldRow(object):
+
+    def __init__(self, field):
+        self.field = field
+        self.name = field.name
+        self.type_ = _get_class_full_name(type(field))
+        if self.field.many_to_many\
+                or self.field.many_to_one\
+                or self.field.one_to_many\
+                or self.field.one_to_one:
+            self.related_model = _get_class_full_name(self.field.remote_field.model)
+        else:
+            self.related_model = 'N/A'
+
+    def pretty_print(self, max_name_len, max_type_len, max_rel_model_len):
+        row = []
+        row.append(self.name)
+        row.append(' ' * (max_name_len - len(self.name)))
+        row.append('|')
+        row.append(self.type_)
+        row.append(' ' * (max_type_len - len(self.type_)))
+        row.append('|')
+        row.append(self.related_model)
+        row.append(' ' * (max_rel_model_len - len(self.related_model)))
+        print(''.join(row))
+
+
+def pretty_print_model_fields(model):
+    field_info_rows = []
+    max_lens = [0, 0, 0]
+    for field in model._meta.get_fields():
+        field_info_rows.append(_ModelFieldRow(field))
+        max_lens[0] = max(max_lens[0], len(field_info_rows[-1].name))
+        max_lens[1] = max(max_lens[1], len(field_info_rows[-1].type_))
+        max_lens[2] = max(max_lens[2], len(field_info_rows[-1].related_model))
+    print('=' * (sum(max_lens) + len(max_lens) - 1))
+    for row in field_info_rows:
+        row.pretty_print(*max_lens)
+        print('=' * (sum(max_lens) + len(max_lens) - 1))