adding hashing

Unit-02/03-hashing-sessions/app.py

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+from project import app
+
+if __name__ == '__main__':
+	app.run(debug=True,port=3000)
+
+

Unit-02/03-hashing-sessions/manage.py

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+from project import app,db
+from flask_script import Manager
+from flask_migrate import Migrate,MigrateCommand
+
+
+migrate = Migrate(app,db)
+
+manager = Manager(app)
+manager.add_command('db',MigrateCommand)
+
+if __name__ == '__main__':
+	manager.run()

Unit-02/03-hashing-sessions/migrations/README

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+Generic single-database configuration.

Unit-02/03-hashing-sessions/migrations/alembic.ini

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+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S

Unit-02/03-hashing-sessions/migrations/env.py

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+from __future__ import with_statement
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+from logging.config import fileConfig
+import logging
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from flask import current_app
+config.set_main_option('sqlalchemy.url',
+                       current_app.config.get('SQLALCHEMY_DATABASE_URI'))
+target_metadata = current_app.extensions['migrate'].db.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(url=url)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    engine = engine_from_config(config.get_section(config.config_ini_section),
+                                prefix='sqlalchemy.',
+                                poolclass=pool.NullPool)
+
+    connection = engine.connect()
+    context.configure(connection=connection,
+                      target_metadata=target_metadata,
+                      process_revision_directives=process_revision_directives,
+                      **current_app.extensions['migrate'].configure_args)
+
+    try:
+        with context.begin_transaction():
+            context.run_migrations()
+    finally:
+        connection.close()
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

Unit-02/03-hashing-sessions/migrations/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}

Unit-02/03-hashing-sessions/migrations/versions/16b913010305_.py

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+"""empty message
+
+Revision ID: 16b913010305
+Revises: cd8c47228091
+Create Date: 2017-12-06 11:29:03.476234
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '16b913010305'
+down_revision = 'cd8c47228091'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('password', sa.Text(), nullable=True))
+    op.add_column('users', sa.Column('username', sa.Text(), nullable=True))
+    op.create_unique_constraint(None, 'users', ['username'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'users', type_='unique')
+    op.drop_column('users', 'username')
+    op.drop_column('users', 'password')
+    # ### end Alembic commands ###

Unit-02/03-hashing-sessions/migrations/versions/cd8c47228091_adding_messages_table.py

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+"""adding messages table
+
+Revision ID: cd8c47228091
+Revises: fd9887ad4857
+Create Date: 2017-12-02 20:33:15.697734
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'cd8c47228091'
+down_revision = 'fd9887ad4857'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('messages',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('content', sa.Text(), nullable=True),
+    sa.Column('user_id', sa.Integer(), nullable=True),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('messages')
+    # ### end Alembic commands ###

Unit-02/03-hashing-sessions/migrations/versions/fd9887ad4857_adding_users_table.py

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+"""adding users table
+
+Revision ID: fd9887ad4857
+Revises: 
+Create Date: 2017-12-02 19:01:34.274330
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'fd9887ad4857'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('users',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('first_name', sa.Text(), nullable=True),
+    sa.Column('last_name', sa.Text(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('users')
+    # ### end Alembic commands ###

Unit-02/03-hashing-sessions/project/__init__.py

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+from flask import Flask, redirect, url_for
+from flask_sqlalchemy import SQLAlchemy
+from flask_modus import Modus
+from flask_bcrypt import Bcrypt
+import os
+
+app = Flask(__name__)
+bcrypt = Bcrypt(app)
+app.config['SQLALCHEMY_DATABASE_URI'] = "postgres://localhost/users-messages-bcrypt"
+app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False 
+app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY')
+modus = Modus(app)
+db = SQLAlchemy(app)
+
+
+from project.users.views import users_blueprint
+from project.messages.views import messages_blueprint
+
+app.register_blueprint(users_blueprint,url_prefix ='/users')
+app.register_blueprint(messages_blueprint,url_prefix ='/users/<int:user_id>/messages')
+
+@app.route('/')
+def root():
+	return redirect(url_for('users.index'))
+
+
+
+
+	## WOOOOOOO LETS NEST THESE MESSAGES

Unit-02/03-hashing-sessions/project/decorators/__init__.py

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+from functools import wraps
+from flask import redirect, url_for, session, flash
+
+def ensure_authenticated(fn):
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        if not session.get('user_id'):
+            flash("Please log in first")
+            return redirect(url_for('users.login'))
+        return fn(*args, **kwargs)
+    return wrapper
+
+def prevent_login_signup(fn):
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        if session.get('user_id'):
+            flash("You are logged in already")
+            return redirect(url_for('users.index'))
+        return fn(*args, **kwargs)
+    return wrapper
+
+def ensure_correct_user(fn):
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        correct_id = kwargs.get('user_id') or kwargs.get('id')
+        if correct_id != session.get('user_id'):
+            flash("Not Authorized")
+            return redirect(url_for('users.index',id=session.get('user_id')))
+        return fn(*args, **kwargs)
+    return wrapper

Unit-02/03-hashing-sessions/project/messages/forms.py

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+from flask_wtf import FlaskForm
+from wtforms import StringField, validators
+
+class MessageForm(FlaskForm):
+	content = StringField('Content',[validators.DataRequired()])
+
+class DeleteForm(FlaskForm):
+	pass

Unit-02/03-hashing-sessions/project/messages/templates/messages/edit.html

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+{% extends 'base.html' %}
+
+{% block content %}
+  <h1>Edit a new message!</h1>
+  <form method="POST" action="{{url_for('messages.show', user_id=message.user_id, id=message.id)}}?_method=PATCH">
+    {{ form.hidden_tag() }}
+
+    {% for field in form if field.widget.input_type != 'hidden' %}
+      <p>
+        {{field.label}}
+        {{field}}
+        <span>
+          {% if field.errors %}
+            {% for error in field.errors %}
+              {{error}}
+            {% endfor %}
+          {% endif %}
+        </span>
+      </p>
+    {% endfor %}
+    <button>Edit a message!</button>
+
+  </form>
+{% endblock %}