Use fields rather than exclude for ChapterForm

Author: ajrbyers

forms.py

@@ -101,7 +101,19 @@ def __init__(self, *args, **kwargs):
 
     class Meta:
         model = models.Chapter
-        exclude = ('book', 'filename', 'keywords', 'publisher_notes')
+        fields = [
+            'title',
+            'description',
+            'pages',
+            'doi',
+            'number',
+            'date_embargo',
+            'date_published',
+            'sequence',
+            'contributors',
+            'license_information',
+            'custom_how_to_cite',
+        ]
 
     def save(self, commit=True, book=None, *args, **kwargs):
         save_chapter = super(ChapterForm, self).save(commit=False)

models.py

@@ -448,10 +448,9 @@ class Chapter(models.Model):
     custom_how_to_cite = models.TextField(
         blank=True, null=True,
         help_text="Custom 'how to cite' text. To be used only if the block"
-            " generated by Janeway is not suitable.",
+                  " generated by Janeway is not suitable.",
     )
 
-
     class Meta:
         ordering = ('sequence', 'number',)