Salad is supposed to be a very lightweight nodeJS framework, that brings the possibility to register routes and controllers and use popular ORM frameworks like
In your project, do this
npm install salad
This is the basic directory setup you should have in your project:
/app /collections # mostly Backbone collections /client /config /server /routes.coffee /shared /client /controllers /server /shared /client /models /server /shared /client /templates /server /shared /client /views # Mostly for Backbone Views /client /public /assets /bower.json /Gruntfile.coffee /package.json /server.js
Salad is composed of several libraries, that are used to bring together useful functionality.
The whole application is instrumented using application configurations. Configurations should register routes and according controllers.
SaladRouterregister# register a full resources. Equivalent of# router.get('/photos(.:format)', 'GET').to('photos.index')# router.post('/photos(.:format)', 'POST').to('photos.create')# router.get('/photos/add(.:format)', 'GET').to('photos.add')# router.get('/photos/:'+resourceName+'Id(.:format)', 'GET').to('photos.show')# router.get('/photos/:'+resourceName+'Id/edit(.:format)', 'GET').to('photos.edit')# router.put('/photos/:'+resourceName+'Id(.:format)', 'PUT').to('photos.update')# router.del('/photos/:'+resourceName+'Id(.:format)', 'DELETE').to('photos.destroy')routerresource "photos""photos""photo"# registering a GET route and handle it in the index action of our index controllerrouterget"/index"to"index.index"
###A restful controller automatically implements CRUD actions like* index* create* update* destroyHowever, you can still replace the default actions. Take a look atsalads src/controllers/concerns/actions.coffe file. This is where thedefault actions are defined.###
You can define models like this: (notice, that the model definition will probably change in future salad versions)
attributes =id:type: SequelizeINTEGERautoIncrement: trueprimaryKey: trueallowNull: truetitle: SequelizeSTRINGcreatedAt: SequelizeDATEupdatedAt: SequelizeDATEcompletedAt: SequelizeDATEoptions =tableName: "todos"App.SequelizeTodo = Appsequelizedefine "Todo"attributesoptions@daotype: "sequelize"instance: AppSequelizeTodo@attribute "id"@attribute "title"@attribute "createdAt"@attribute "updatedAt"@attribute "completedAt"
This basically defines a sequelize model, and passes the instance it on to our salad model. This is required, because salad provides the functionality to support many different data stores. So you could also think about Facebook, MongoDB, etc.
The actual salad model definition is this part:
@daotype: "sequelize"instance: AppSequelizeTodo@attribute "id"@attribute "title"@attribute "createdAt"@attribute "updatedAt"@attribute "completedAt"
this defines the model and some attributes.
In our salad application we could now do something like this:
attributes =title: "I am a TODO item!"AppTodocreate attributesconsolelog resourcetoJSON
AppTodocreate title: "Test"consolelog resourcetoJSON# Selecting a model by idAppTodofind 1# accessing single attributesresourceget"id" # returns 1# getting all attributesresourcegetAttributes # returns an object with key, value pairs# setting a new title. This only changes the current instance. we# have to save our changesresourceset "title""my new title"resourcesave# we now saved our changes# but instead of using `model.set` and `model.save` we could do this:resourceupdateAttributes title: "my new title"# this also saved our changes
Salad provides a mechanism called
scopes. They are basically very dumb
instances that collect arguments like conditions, sort information, etc.
When finally comleting the scope, these objects are passed on to the DAO instance. The DAO instance is responsible for translating the arguments contained in the scope to form a request to its data provider.
might produce an SQL query like this:
SELECT * FROM "todos" ORDER BY createdAt ASC LIMIT 3
As you can see, you can chain different operators on the scope.
Possible operators are:
model = AppTodo# options is a hash object containing specific conditionsoptions =title: "test"completedAt: nullmodelwhereoptions# order ascending by titlemodelasc"title"# this can be called several times:modelasc"title"asc"createdAt"# same as with descending sortingmodeldesc"title"# checking if something is contained in an array (PostgreSQL i.e.)# this checks if "work" is an element of the "tags" field.modelcontains"tags""work"# eager-loading of associated modelsmodelincludeAppUser# limiting result setmodellimit30# skipping first 10 resultsmodeloffset10
When you are done calling all the operators, you may finalize the scope. You do this by calling the actual method that queries the data:
modelwherecompleted: falsecountconsolelog count# 10modelall# resources is an array containing the requested modelsmodelfirst# returns the first resource. Same as:modellimit1allresource = resources1modelfindAndCountAllconsolelog datacount # 10consolelog datarows # Array containing resources
Let's assume you have a
App.User model and you want to have some instances
in the database for easy unit testing or just to have some data to show during
You can create a file
module.exports =email: "firstname.lastname@example.org"firstname: "Tom"lastname: "Bob"
When you execute
cake db:load the fixtures will get initialized and stored
in the database.
Fixtures make it very easy for you as a developer to quickly bootstrap some data.
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