DS#findAll

The "R" in "CRUD", DS#findAll is for retrieving a collections of items via an adapter. With completely default settings, it's probably going to end up making a GET request to /resource, where resource is the name of the resource, e.g. store.findAll('user'). If you're working with the resource directly you can just do User.findAll().

DS#findAll is asynchronous and returns a promise.

DS#findAll queries are cached and keyed in the data store by JSON.stringify(params). So, by default, DS#findAll first checks to see if the query has made been before, and if so (by default) will immediately resolve with the items that were returned the first time. JSData behaves in two different ways here depending on the boolean value of options.useFilter, as explained next:

If useFilter: trueand query is cached, DS#findAll calls DS#filter with the params argument. DS#fitler applies JSData's query syntax to the collection of items from already cached DS#findAll query, and resolves the promise immediately with the result. This is handy for catching items that were added to the store (or removed) since the first time the particular query was made.

If useFilter: false (the default behavior) , DS#findAll' always returns what was received from the configured adapter, as it is. JSData's query syntax params is ignored and has no effect on the result of cached query here.

If the query hasn't been made before or bypassCache is true, DS#findAll ends up passing the params and options arguments to the configured adapter's findAll method. For an http adapter, both params and options.params are merged and serialized to the url query string. You can use options.params to pass backend specific query parameters to the http adapter. For JSData's query syntax, only params argument has any meaning (options.params is ignored here), and even then, it only matters if useFilter is true. When the adapter responds, cacheResponse: true will inject the result into the store.

bypassCache: true will ignore the cached query and force the specified collection to again be loaded via an adapter.

cacheResponse: false will cause the result to not be injected in the store.

If the result is to be injected into the store, the options argument will also be passed to DS#inject when it is called.

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You can call DS#findAll multiple ways

• DS#findAll(resourceName[, params][, options])
• Resource#findAll([params][, options]) - Where Resource was created by DS#defineResource

Examples

// find all comments
Comment.findAll().then(function (comments) {
  // this will immediately resolve because the query is cached
  return Comment.findAll();
}).then(function (comments) {
  // find all comments of user 1
  return Comment.findAll({ userId: 1 });
}).then(function (comments) {
  // this will immediately resolve because the query is cached
  return Comment.findAll({ userId: 1 });
}).then(function (comments) {
  // force a new request
  return Comment.findAll({ userId: 1 }, { bypassCache: true });
}).then(function (comments) {
  // make a request if one isn't cached
  // then resolve with the result of "Comment.filter({ userId: 1 })"
  return Comment.findAll({ userId: 1 }, { useFilter: true });
}).then(function (comments) {
  assert.deepEqual(comments, Comment.filter({ userId: 1 }));
});

// Find all users where age is greater than 30
User.findAll({
  where: {
    age: {
      '>': 30
    }
	}
}).then(function (users) {
  // users[0].age; 55 // etc., etc.
});

// Find all users where age is greater than 30
// but grab "page 3" and orderBy age descending
User.findAll({
  where: {
    age: {
      '>': 30
    }
	},
  limit: 10,
  offset: 20,
  orderBy: [
    ['age', 'DESC']
  ]
}).then(function (users) {
  // ...
});

// Load relations as well.
// This does NOT WORK for the http adapter unless you specifically
// update your backend understand a "with" querystring parameter
// The "with" option works for all other adapters, assuming you've
// setup the relations correctly and your data supports them.
Post.findAll({
  /* also could do:
  where: {
    authorId: {
      '==': 78
    }
  },*/
  authorId: 78, // where authorId is 78
  limit: 4,
  offset: 8,
  orderBy: [
    ['created_at', 'DESC']
  ]
}, { 'with': ['comment', 'comment.user'] }).then(function (posts) {
  posts[0].comments[0].user; // { ... }
  posts[0].authorId; // 78
});

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Need help?

Want more examples or have a question? Ask on the Slack channel or post on the mailing list then we'll get your question answered and probably update this wiki.