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--- wiki2:python:flask:mongoalchemy [2015/08/08 13:49]
alfred [Use]
+++ wiki2:python:flask:mongoalchemy [2020/05/09 09:25] (actual)
@@ Línea 70: / Línea 70: @@
 </code>
+=== Advanced ===
+You can create your own queries:
+<code python>
+from flask.ext.mongoalchemy import BaseQuery
+from application import db
+class MyCustomizedQuery(BaseQuery):
+    def get_johns(self):
+        return self.filter(self.type.first_name == 'John')
+class Person(db.Document):
+    query_class = MyCustomizedQuery
+    name = db.StringField()
+</code>
+There are other functions:
+  * first_or_404()
+  * get(mongo_id)
+  * get_or_404(mongo_id)
+=== Pagination ===
+You can call a method for a query: ''paginate(page, per_page=20, error_out=True)''. This method returns a ''Pagination'' object in which you can call...
+  * has_next()
+  * has_prev()
+  * items = None
+  * next(error_out=False)
+  * next_num
+  * page = None
+  * pages
+  * per_page = None
+  * prev(error_out=False)
+  * prev_num
+  * query = None
+  * total = None
+[[https://pythonhosted.org/Flask-MongoAlchemy/index.html#flask.ext.mongoalchemy.Pagination.has_next|Documentation for these methods]]
 ===== Configuration =====
 <code python>

Programming