Tamotsu

Tamotsu(保つ) is an object-spreadsheet mapping library like ActiveRecord for google apps script.

Tamotsu.initialize();
var Agent = Tamotsu.Table.define({ sheetName: 'Agents' });

var agent = Agent.find(1);
Logger.log(agent); //=>  {#=1.0, First Name=Charles, Last Name=Bartowski, Gender=Male, Salary=100.0, ...}

Installation

Tamotsu is made available as a script library. This is how you add it to your project:

1. Select "Resources" > "Libraries..." in the Google Apps Script editor.
2. Enter the project key (1OiJIgWlrg_DFHFYX_SoaEzhFJPCmwbbfEHEqYEfLEEhKRloTNVJ-3U4s) in the "Find a Library" field, and choose "Select".
3. Select the highest version number, and choose Tamotsu as the identifier. (Do not turn on Development Mode unless you know what you are doing. The development version may not work.)
4. Press Save. You can now use the Tamotsu library in your code.

Usage

When your spreadsheet is the following sheet.

NOTICE: Column # is used as id column.

// You have to invoke this first.
Tamotsu.initialize();
// Define your table class
var Agent = Tamotsu.Table.define({ sheetName: 'Agents' }, {
  fullName: function() {
    return [this['First Name'], this['Last Name']].join(' ');
  },
});

Agent.first(); //=> {#=1.0, First Name=Charles, ...}
Agent.find(2); //=> {#=2.0, First Name=Sarah, ...}
Agent.last();  //=> {#=3.0, First Name=John, ...}

Agent.find(1).fullName(); //=> "Charles Bartowski"

Agent.where({ Gender: 'Male' })
     .order('Salary DESC')
     .all();  //=> [{#=3.0, First Name=John, ...}, {#=1.0, First Name=Charles}]

Agent.sum('Salary');  //=> 600

Agent.create({
  'First Name': 'Morgan',
  'Last Name': 'Grimes',
  'Gender': 'Male',
  'Salary': 50,
}); //=> {#=4.0, First Name=Morgan, ...}
    //   and the data will be appended to the sheet.

var agent = Agent.where(function(agent) { return agent['Salary'] > 150; })
                 .first(); //=> {#=2.0, First Name=Sarah, ...}
agent['Salary'] = 250;
agent.save(); //=> The salary on the sheet will be updated.

API

Tamotsu

Tamotsu.initialize([Spreadsheet])

Param	Type	Description
Spreadsheet (optional)	Spreadsheet	A spreadsheet object you will handle. If nothing is given, it uses SpreadsheetApp.getActive() instead.

You have to invoke this method before using Tamotsu.Table.

Tamotsu.onInitialized(callback)

Param	Type	Description
callback	function	A function that is to be added to the callback list.

You can isolate table definitions from main code with this method.

var Agent;
Tamotsu.onInitialized(function() {
  Agent = Tamotsu.Table.define({ sheetName: 'Agents' });
});

function main() {
  Tamotsu.initialize();
  Logger.log(Agent.first());
}

Tamotsu.Table

Tamotsu.Table.define(classProperties[, instanceProperties])

Returns a table class extended from Tamotsu.Table.

Param	Type	Description
classProperties	object	An object that is to be defined on your table class as class properties
instanceProperties (optional)	object	An object that is to be defined on your table class's instance as instance properties

Prepared classProperties

Key	Type	Description
sheetName (necessary)	string	A sheet name you will use as a table
idColumn	string	Id column used as a key (Default: '#')
autoIncrement	boolean	If true, id is automatically incremented when its value is blank (Default: true)
rowShift	number	Number of rows before the start of the table (Default: 0)
columnShift	number	Number of columns before the start of the table (Default: 0)

Prepared instanceProperties

Key	Type	Description
validate	function	A validation function that is to be called before save. The callback will be given on param.

...
validate: function(on) {
  // on === 'create' or 'update'
  if (on === 'create') {
    if (!this['First Name']) this.errors['First Name'] = "can't be blank";
  } else if (on === 'update') {
    if (this['Salary'] > 500) this.errors['Salary'] = "is too much";
  }
  if (this['Gender'] !== 'Male' && this['Gender'] !== 'Female') {
    this.errors['Gender'] = "must be 'Male' or 'Female'";
  }
},
...

An example of Tamotsu.Table.define:

Tamotsu.initialize();
var Agent = Tamotsu.Table.define({
  // classProperties
  sheetName: 'Agents2',
  idColumn: 'Agent No', // the column used as id
  aClassProp: 'A class property',
  rowShift: 1,
  columnShift: 0,
}, {
  // instanceProperties
  isMale: function() {
    return this['Gender'] === 'Male';
  },
  isFemale: function() {
    return this['Gender'] === 'Female';
  },
  validate: function(on) {
    if (!this['First Name']) {
      this.errors['First Name'] = "can't be blank";
    }
  },
});

Logger.log(Agent.aClassProp); //=> 'A class property'
var agent = Agent.where({ Gender: 'Male' }).first();
Logger.log(agent.isMale()); //=> true
Logger.log(agent.isFemale()); //=> false

Logger.log(Agent.create({ 'First Name': '' })); //=> false
Logger.log(Agent.create({ 'First Name': 'James' })); //=> {Agent No=4.0, First Name=James, ...}

Tamotsu.Table.first()

Retunrs the first model in the table.

Tamotsu.Table.last()

Retunrs the last model in the table.

Tamotsu.Table.find(id)

Returns the model found by the given id.

Param	Type	Description
id	any	An id to find

Tamotsu.Table.all()

Returns the all model in the table.

Tamotsu.Table.pluck(column)

Returns an array of the given column's values.

Param	Type	Description
column	string	a column name to pluck

var firstNames = Agent.pluck('First Name');
Logger.log(firstNames); //=> ['Charles', 'Sarah', 'John']

Tamotsu.Table.sum(column)

Returns the summed up number of the given column's values.

Param	Type	Description
column	string	a column name to sum up

var total = Agent.sum('Salary');
Logger.log(total); //=> 600

Tamotsu.Table.max(column)

Returns the maximum value of the given column's values.

Param	Type	Description
column	string	a column name to examine

var max = Agent.max('Salary');
Logger.log(max); //=> 300

Tamotsu.Table.min(column)

Returns the minimum value of the given column's values.

Param	Type	Description
column	string	a column name to examine

var min = Agent.min('Salary');
Logger.log(min); //=> 100

Tamotsu.Table.where(conditions)

Returns the relation object which meets the given conditions.

Param	Type	Description
conditions	object or function	a condition object or predicate function

// Object condition
var men = Agent.where({ Gender: 'Male' }).all();
Logger.log(men); //=> [{#=1.0, First Name=Charles...}, {#=3.0, First Name=John...}

// Function condition
var highPay = Agent.where(function(agent) { return agent['Salary'] > 150; })
                   .all();
Logger.log(highPay); //=> [{#=2.0, First Name=Sarah...}, {#=3.0, First Name=John...}]

For sure where returns not models but a relation object that is to be chained with other scope functions, so you can get the records in such an elegant way.

Agent.where(condition1).where(condition2).order(comparator).all();

Tamotsu.Table.order(comparator)

Returns the relation object which meets the given sort order.

Param	Type	Description
comparator	string or function	a column name or comparator function

// Object comparator
var asc = Agent.order('Salary').all();
Logger.log(asc); //=> [{#=1.0, Salary=100...}, {#=3.0, Salary=200...}, {#=2.0, Salary=300}]

// Supports ASC/DESC
var desc = Agent.order('Salary DESC').all();
Logger.log(desc); //=> [{#=2.0, Salary=300...}, {#=3.0, Salary=200...}, {#=1.0, Salary=100}]

// Function comparator
Agent.order(function(agent1, agent2) {
  // complex comparator
  return agent2['First Name'].length - agent1['First Name'].length;
}).all();

Tamotsu.Table.create(modelOrAttributes)

Creates new record in the spreadsheet with the given model or attributes and returns the new model if created successfully.

Param	Type	Description
modelOrAttributes	model or object	Tamotsu.Table model or attribtues object

var agent = new Agent({
  'First Name': 'Morgan',
  'Last Name': 'Grimes',
  'Gender': 'Male',
  'Salary': 50,
});
Agent.create(agent); //=> {#=4.0, First Name=Morgan, ...}
                     // and the data will be appended to the sheet.
// or
Agent.create({
  'First Name': 'Morgan',
  'Last Name': 'Grimes',
  'Gender': 'Male',
  'Salary': 50,
});

Tamotsu.Table.createOrUpdate(modelOrAttributes)

[with NOT existing id] Creates new record in the spreadsheet with the given model or attributes and returns the new model if created successfully.

[with existing id] Updates existing record in the spreadsheet with the given model or attributes and returns true if updated successfully.

Param	Type	Description
modelOrAttributes	model or object	Tamotsu.Table model or attribtues object

var agent = new Agent({
  '#': '999',
  'First Name': 'Morgan',
  'Last Name': 'Grimes',
  'Gender': 'Male',
  'Salary': 50,
});
// If there is no record with id=999, the data will be appended to the sheet. Otherwise, the row with id=999 will be updated with the given data.
Agent.createOrUpdate(agent);  //=> {#=999.0, First Name=Morgan, ...}

// with attributes
Agent.createOrUpdate({
  '#': '999',
  'First Name': 'Morgan',
  'Last Name': 'Grimes',
  'Gender': 'Male',
  'Salary': 50,
});

Tamotsu.Model

Tamotsu.Model.save()

Creates or updates on the spreadsheet with the model attributes.

// Creates
var newAgent = new Agent({
  'First Name': 'Morgan',
  'Last Name': 'Grimes',
  'Gender': 'Male',
  'Salary': 50,
});
newAgent.save(); // The data will be appended to the last of the sheet.

// Updates
var agent = Agent.last();
agent['Salary'] = 10;
agent.save(); // The data on the sheet will be updated.

Tamotsu.Model.updateAttributes(attributes)

Updates model and spreadsheet with the given attributes and returns true if updated successfully.

Param	Type	Description
attributes	object	attribtues object (column to value)

var agent = Agent.first();
agent.updateAttributes({ 'First Name': 'Chuck', 'Salary': 500 }); // The data on the sheet will be updated.
Logger.log(agent); //=>  {#=1.0, First Name=Chuck, Last Name=Bartowski, Gender=Male, Salary=500.0, ...}

Tamotsu.Model.destroy()

Delete the model away from the spreadsheet.

var fired = Agent.first();
fired.destroy(); // The data will be removed away from the sheet.

Tamotsu.Model.isValid()

Returns boolean of the model being valid/invalid.

Tamotsu.initialize();
var Agent = Tamotsu.Table.define({ sheetName: 'Agents' }, {
  validate: function(on) {
    if (!this['First Name']) {
      this.errors['First Name'] = "can't be blank";
    }
  },
});

var agent = new Agent();
Logger.log(agent.isValid()); //=> false

agent['First Name'] = 'Morgan';
Logger.log(agent.isValid()); //=> true

Tamotsu.Model.isNewRecord()

Returns boolean of the model being new record or not.

var agent = new Agent();
Logger.log(agent.isNewRecord()); //=> true

agent = Agent.first();
Logger.log(agent.isNewRecord()); //=> false

Tamotsu.Model.getAttributes()

Returns an object of the model attributes. (column to value)

var agent = new Agent();
Logger.log(agent.getAttributes()); //=> {'#': 1, 'First Name': 'Charles', 'Last Name': 'Bartowski', ...}

Tamotsu.Model.setAttributes()

Set attributes to a model.

Param	Type	Description
attributes	object	attribtues object (column to value)

var agent = Agent.first();
agent.setAttributes({ 'First Name': 'Morgan', 'Last Name': 'Grimes' });

Test

Here is the specs.

https://github.com/itmammoth/Tamotsu_Test

Licence

MIT Licence.