Granular replacement of fragments!

crudkit/ui/fragments.py

@@ -1,13 +1,29 @@
-from jinja2 import Environment, FileSystemLoader
+from jinja2 import Environment, FileSystemLoader, ChoiceLoader
 from sqlalchemy.orm import class_mapper, RelationshipProperty
+from flask import current_app
 import os
 
-FRAGMENT_PATH = os.path.join(os.path.dirname(__file__), 'templates')
-env = Environment(loader=FileSystemLoader(FRAGMENT_PATH))
+def get_env():
+    app_loader = current_app.jinja_loader
+
+    default_path = os.path.join(os.path.dirname(__file__), 'templates')
+    fallback_loader = FileSystemLoader(default_path)
+
+    env = Environment(loader=ChoiceLoader([
+        app_loader,
+        fallback_loader
+    ]))
+    return env
+
+def get_crudkit_template(env, name):
+    try:
+        return env.get_template(f'crudkit/{name}')
+    except Exception:
+        return env.get_template(name)
 
 def render_field(field, value):
-    print(field)
-    template = env.get_template('field.html')
+    env = get_env()
+    template = get_crudkit_template(env, 'field.html')
     return template.render(
         field_name=field['name'],
         field_label=field.get('label', field['name']),
@@ -16,13 +32,14 @@ def render_field(field, value):
         options=field.get('options', None)
     )
 
-
 def render_table(objects):
-    template = env.get_template('table.html')
+    env = get_env()
+    template = get_crudkit_template(env, 'table.html')
     return template.render(objects=objects)
 
 def render_form(model_cls, values, session=None):
-    template = env.get_template('form.html')
+    env = get_env()
+    template = get_crudkit_template(env, 'form.html')
     fields = []
     fk_fields = set()