/cheat-sheet

Cheat Sheet

Alexa Skills Kit Rails MySQL

Alexa Skills Kit

Bug - ask dialog returning [Error]

[Error]: Failed to simulate dialog. The skill that you are trying to simulate has not been created or cloned. If this is a new skill, please try creating and deploying the skill in your project first. If this is an existing skill, please try cloning the skill in your project first. You can also specify the skill id explicitly via the skill-id option.

  1. make sure ask clone gives the right skills
  2. if not, make sure the correct version of node is being used nvm use ...
  3. if not, ensure the env variable ASK_DEFAULT_PROFILE is right

Rails

New app with PostgreSQL

rails new myapp --database=postgresql

MySQL

drop multiple columns

alter table TableName drop Column1, drop Column2

rename column

ALTER TABLE sites CHANGE MainImageSplitBackgroundColour MainImageSplitBackgroundColor VARCHAR(255);

alter table add foreign key

ALTER TABLE Orders ADD FOREIGN KEY (PersonID) REFERENCES Persons(PersonID);

set values to column of different table

UPDATE table_name1 SET column1 = ( SELECT column2 FROM table_name2 WHERE table_name1.id = table_name2.id );

drop foreign key

ALTER TABLE `custom_links`
DROP FOREIGN KEY `custom_links_ibfk_1`;

add not null

ALTER TABLE Persons MODIFY Age int NOT NULL;

remove not null

alter table table_name modify column foo int;