Add api.documents view

alembic/versions/cceddcb46e27_add_api_documents_view.py

+"""Add api.documents view
+
+Revision ID: cceddcb46e27
+Revises: 4e5952eb6d61
+Create Date: 2018-01-24 16:11:57.032715
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from gargantext.util.alembic import ReplaceableObject
+
+
+# revision identifiers, used by Alembic.
+revision = 'cceddcb46e27'
+down_revision = '4e5952eb6d61'
+branch_labels = None
+depends_on = None
+
+
+api_documents_view = ReplaceableObject(
+    "api.documents",
+    """SELECT n.id, n.typename AS type, n.user_id, n.parent_id, n.name, n.date AS created, n.hyperdata AS data, n.title_abstract, COUNT(nng) AS ngram_count
+        FROM nodes n
+            LEFT JOIN nodes_ngrams nng ON (n.id=nng.node_id)
+            LEFT JOIN nodes lst ON (lst.parent_id=n.parent_id)
+            LEFT JOIN nodes_ngrams nng2 ON (lst.id=nng2.node_id AND nng2.ngram_id=nng.ngram_id)
+        WHERE n.typename=4 AND lst.typename=8
+        GROUP BY n.id""")
+
+
+def upgrade():
+    op.create_view(api_documents_view)
+    op.execute("ALTER VIEW api.documents OWNER TO gargantext")
+    op.execute("GRANT SELECT ON nodes_ngrams TO gargantext")
+
+
+def downgrade():
+    op.execute("REVOKE SELECT ON nodes_ngrams FROM gargantext")
+    op.drop_view(api_documents_view)