Javascript Sql Error Object
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how easy it would be to deploy to multiple platforms. Problem was the app needed to store some data locally. I immediately thought of HTML 5 and web sql databases http://www.kadrmasconcepts.com/blog/2011/06/01/html5-web-sql-databases-w-javascript/ as an option. Again this posed problems as I had no idea how to accomplish this. Turns out it is pretty simple if you have done any database work in the past. There are a http://docs.sequelizejs.com/en/v3/api/errors/ few gotchas when working with SQLite and for me it was particularly frustrating working with the date/time features. Create a database For simplicity I made an object called Database and added methods to the proto sql error chain for each database action. One thing to note is that a reference to mydb has been placed in the function for the Database object. This way once the database is open we can set this.mydb to that open database connection for further calls. var Database = function(){ var mydb=false; } Database.prototype.initDB = function() { try { if (!window.openDatabase) { alert('not supported'); } else { var shortName = 'sampledatabase'; var version javascript sql error = '1.0'; var displayName = 'Sample Database'; var maxSize = 65536; // in bytes this.mydb = openDatabase(shortName, version, displayName, maxSize); } } catch(e) {} } // Then we can easily make a new Database object and call the initDB method. var database = new Database(); database.initDB(); 123456789101112131415161718192021 var Database = function(){ var mydb=false;}Database.prototype.initDB = function() { try { if (!window.openDatabase) { alert('not supported'); } else { var shortName = 'sampledatabase'; var version = '1.0'; var displayName = 'Sample Database'; var maxSize = 65536; // in bytes this.mydb = openDatabase(shortName, version, displayName, maxSize); }} catch(e) {}}// Then we can easily make a new Database object and call the initDB method.var database = new Database();database.initDB(); Create a table Next, we are going to want to create a database table to store our data. We only want to create this table IF it does not exist already. Once again this is pretty simple. We created a table with an auto id, name_field, interval, and date_added. One thing to be aware of when using dates is that SQLite will use GMT as the standard for the SQL variable "now". To change this you can do as we did below. Just set now to ‘localtime'. Also, we have to set a callback handler for success
with legacy tables Raw queries Migrations API Sequelize Model Instance Associations Overview BelongsTo (1:1) HasOne (1:1) HasMany (1:m) BelongsToMany (n:m) Hooks Transaction Datatypes Deferrable Errors Class Errors new BaseError() new ValidationError(message, [errors]) errors get(path) new DatabaseError() parent sql message() fields() value() index() new TimeoutError() new UniqueConstraintError() new ForeignKeyConstraintError() new ExclusionConstraintError() new ValidationErrorItem(message, type, path, value) new ConnectionError() parent new ConnectionRefusedError() new AccessDeniedError() new HostNotFoundError() new HostNotReachableError() new InvalidConnectionError() new ConnectionTimedOutError() new InstanceError() Misc Changelog Imprint Sequelize | The Node.js / io.js ORM for PostgreSQL, MySQL, SQLite and MSSQL Docs » API » Errors Edit on GitHub Class Errors View code Sequelize provides a host of custom error classes, to allow you to do easier debugging. All of these errors are exposed on the sequelize object and the sequelize constructor. All sequelize errors inherit from the base JS error object. new BaseError() View code The Base Error all Sequelize Errors inherit from. Aliases: Error new ValidationError(message, [errors]) View code Validation Error. Thrown when the sequelize validation has failed. The error contains an errors property, which is an array with 1 or more ValidationErrorItems, one for each validation that failed. Params: Name Type Description message string Error message [errors] Array Array of ValidationErrorItem objects describing the validation errors Extends: BaseError errors View code An array of ValidationErrorItems get(path) View code Gets all validation error items for the path / field specified. Params: Name Type Description path string The path to be checked for error items new DatabaseError() View code A base class for all database related errors. Extends: BaseError parent View code The database specific error which triggered this one sql View code The SQL that triggered the error message() View code The message from the DB. fields() View code The fields of the unique constraint value() View code The value(s) which triggered the error index() View code The name of the index t