Dev: Add initial migration and Running migration instruction to README

Update README

update readme

apply black

fix typo

README.md

@@ -209,6 +209,45 @@ To run black:
 black .
 ```
 
+### Run migration Scripts
+#### If this is you first time running migration: 
+Run the below command to attach the current alembic version number on the repo to your local db.
+* Note: For new contributors who just completed environment setup, run the following command **AFTER** running the application for the first time.
+
+```
+flask db stamp head
+```
+
+#### If you have run migration before and have just pulled the latest update from upstream that includes newer version/s of migration script.
+
+Confirm you have the same version number as the second last one on the repo (if there're multiple versions). To do this, run the below commmand
+```
+flask db history // to check the list of version history on the repo
+flask db current // to check your latest version on the local db
+```
+If you're missing other updates listed beside the latest version, run the below command **IN SEQUENTIAL ORDER** one command at a time from the first update you've missed. If you are up to date and only need to update to the latest version, you don't need to specify the `missing version number`.
+
+```
+flask db upgrade <missing version number>
+```
+
+#### If you are making changes to db model/s 
+##### By adding attribute/s to an existing db model
+1. make sure you have the latest version as per the upstream repo
+2. make the necessary schema changes on your db model/s
+3. run the following command to add the update onto the migration version history
+```
+flask db migrate -m "<message>"
+```
+where `<message>` is a clear message what the change was about. This will be your alembic version title.
+You should see the new version inside the `versions` folder
+3. run the following command to apply the update to your local db
+```
+flask db upgrade
+```
+
+##### TO DO - Altering existing attribute/s of an existing db model
+
 ## Documentation
 
 Documentation for the project is hosted [here](https://anitab-org.github.io/mentorship-backend/). We use Docusaurus for maintaining the documentation of the project.

migrations/env.py

@@ -25,7 +25,7 @@
 
 config.set_main_option(
     "sqlalchemy.url",
-    current_app.config.get("SQLALCHEMY_DATABASE_URI").replace("%", "%%"),
+    str(current_app.extensions["migrate"].db.engine.url).replace("%", "%%"),
 )
 target_metadata = current_app.extensions["migrate"].db.metadata
 

migrations/versions/0541c68e5b13_initial_migration.py

@@ -0,0 +1,129 @@
+"""Initial migration
+
+Revision ID: 0541c68e5b13
+Revises: 
+Create Date: 2021-07-07 12:20:10.523552
+
+"""
+from alembic import op
+from app.database.db_types.JsonCustomType import JsonCustomType
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = "0541c68e5b13"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table(
+        "tasks_list",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("tasks", JsonCustomType, nullable=True),
+        sa.Column("next_task_id", sa.Integer(), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "users",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("name", sa.String(length=30), nullable=True),
+        sa.Column("username", sa.String(length=30), nullable=True),
+        sa.Column("email", sa.String(length=254), nullable=True),
+        sa.Column("password_hash", sa.String(length=100), nullable=True),
+        sa.Column("registration_date", sa.Float(), nullable=True),
+        sa.Column("terms_and_conditions_checked", sa.Boolean(), nullable=True),
+        sa.Column("is_admin", sa.Boolean(), nullable=True),
+        sa.Column("is_email_verified", sa.Boolean(), nullable=True),
+        sa.Column("email_verification_date", sa.DateTime(), nullable=True),
+        sa.Column("current_mentorship_role", sa.Integer(), nullable=True),
+        sa.Column("membership_status", sa.Integer(), nullable=True),
+        sa.Column("bio", sa.String(length=500), nullable=True),
+        sa.Column("location", sa.String(length=80), nullable=True),
+        sa.Column("occupation", sa.String(length=80), nullable=True),
+        sa.Column("organization", sa.String(length=80), nullable=True),
+        sa.Column("slack_username", sa.String(length=80), nullable=True),
+        sa.Column("social_media_links", sa.String(length=500), nullable=True),
+        sa.Column("skills", sa.String(length=500), nullable=True),
+        sa.Column("interests", sa.String(length=200), nullable=True),
+        sa.Column("resume_url", sa.String(length=200), nullable=True),
+        sa.Column("photo_url", sa.String(length=200), nullable=True),
+        sa.Column("need_mentoring", sa.Boolean(), nullable=True),
+        sa.Column("available_to_mentor", sa.Boolean(), nullable=True),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("email"),
+        sa.UniqueConstraint("username"),
+    )
+    op.create_table(
+        "mentorship_relations",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("mentor_id", sa.Integer(), nullable=True),
+        sa.Column("mentee_id", sa.Integer(), nullable=True),
+        sa.Column("action_user_id", sa.Integer(), nullable=False),
+        sa.Column("creation_date", sa.Float(), nullable=False),
+        sa.Column("accept_date", sa.Float(), nullable=True),
+        sa.Column("start_date", sa.Float(), nullable=True),
+        sa.Column("end_date", sa.Float(), nullable=True),
+        sa.Column(
+            "state",
+            sa.Enum(
+                "PENDING",
+                "ACCEPTED",
+                "REJECTED",
+                "CANCELLED",
+                "COMPLETED",
+                name="mentorshiprelationstate",
+            ),
+            nullable=False,
+        ),
+        sa.Column("notes", sa.String(length=400), nullable=True),
+        sa.Column("tasks_list_id", sa.Integer(), nullable=True),
+        sa.ForeignKeyConstraint(
+            ["mentee_id"],
+            ["users.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["mentor_id"],
+            ["users.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["tasks_list_id"],
+            ["tasks_list.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    op.create_table(
+        "tasks_comments",
+        sa.Column("id", sa.Integer(), nullable=False),
+        sa.Column("user_id", sa.Integer(), nullable=True),
+        sa.Column("task_id", sa.Integer(), nullable=True),
+        sa.Column("relation_id", sa.Integer(), nullable=True),
+        sa.Column("creation_date", sa.Float(), nullable=False),
+        sa.Column("modification_date", sa.Float(), nullable=True),
+        sa.Column("comment", sa.String(length=400), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["relation_id"],
+            ["mentorship_relations.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["task_id"],
+            ["tasks_list.id"],
+        ),
+        sa.ForeignKeyConstraint(
+            ["user_id"],
+            ["users.id"],
+        ),
+        sa.PrimaryKeyConstraint("id"),
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table("tasks_comments")
+    op.drop_table("mentorship_relations")
+    op.drop_table("users")
+    op.drop_table("tasks_list")
+    # ### end Alembic commands ###

run.py

@@ -14,7 +14,7 @@ def create_app(config_filename: str) -> Flask:
 
     db.init_app(app)
 
-    migrate = Migrate(app, db)
+    migrate = Migrate(app, db, render_as_batch=True)
 
     from app.api.jwt_extension import jwt