SequelizeHelper.js
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SequelizeHelper = {
log: function(obj) {
var sys = require("sys")
sys.puts(sys.inspect(obj))
},
SQL: {
asTableName: function(name) {
return name + "s"
},
asSqlDate: function(date) {
return [
[
date.getFullYear(),
((date.getMonth() < 9 ? '0' : '') + (date.getMonth()+1)),
((date.getDate() < 10 ? '0' : '') + date.getDate())
].join("-"),
date.toLocaleTimeString()
].join(" ")
},
valuesForInsertQuery: function(object) {
var actualValues = object.values,
result = []
SequelizeHelper.Hash.keys(actualValues).forEach(function(key) {
var value = actualValues[key],
dataType = object.attributes[key]
result.push(SequelizeHelper.SQL.transformValueByDataType(value, dataType))
})
return result
},
fieldsForInsertQuery: function(object) {
return SequelizeHelper.Hash.keys(object.values).join(", ")
},
transformValueByDataType: function(value, dataType) {
if(dataType.indexOf(Sequelize.INTEGER) > -1)
return value
if(dataType.indexOf(Sequelize.DATE) > -1)
return ("'" + SequelizeHelper.SQL.asSqlDate(value) + "'")
return ("'" + value + "'")
},
valuesForUpdate: function(object, options) {
var actualValues = object.values,
result = []
options = options || {}
SequelizeHelper.Hash.keys(actualValues).forEach(function(key) {
var value = actualValues[key],
dataType = object.attributes[key]
result.push([key, SequelizeHelper.SQL.transformValueByDataType(value, dataType)].join(" = "))
})
return result.join(options.seperator || ", ")
},
hashToWhereConditions: function(conditions, attributes) {
if(typeof conditions == 'number')
return ('id = ' + conditions)
else {
var result = []
SequelizeHelper.Hash.forEach(conditions, function(value, key) {
result.push(key + "=" + SequelizeHelper.SQL.transformValueByDataType(value, attributes[key]))
})
return result.join(" AND ")
}
}
},
evaluateTemplate: function(template, replacements) {
var result = template
SequelizeHelper.Hash.keys(replacements).forEach(function(key) {
result = result.replace("%{" + key + "}", replacements[key])
})
return result
},
Hash: {
forEach: function(object, func) {
SequelizeHelper.Hash.keys(object).forEach(function(key) {
func(object[key], key, object)
})
},
keys: function(object) {
var results = []
for (var property in object)
results.push(property)
return results
},
values: function(object) {
var result = []
SequelizeHelper.Hash.keys(object).forEach(function(key) {
result.push(object[key])
})
return result
},
merge: function(source, target, force) {
SequelizeHelper.Hash.forEach(source, function(value, key) {
if(!target[key] || force)
target[key] = value
})
return target
}
}
}