Posts (page 75)
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5 min readIn Ember.js, you can pass parameters to a router action by using the transitionToRoute method in your controller or component. This method allows you to specify the route name and any parameters that you want to pass to the route.For example, if you have a route named posts with a dynamic segment for the post ID, you can pass the post ID as a parameter to the transitionToRoute method like this: this.
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5 min readTo create a multiselect list in Ember.js, you can use the Ember Power Select addon which provides a powerful and customizable select component. First, install the Ember Power Select addon by running the command ember install ember-power-select. Next, you can use the {{#power-select}} component in your Ember template to create a multiselect list. You can customize the options and behaviors of the multiselect list by passing different parameters to the component.
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5 min readTo delete a key in Ember.js, you can use the set() method with a value of undefined or null. This will effectively remove the key from the object. Alternatively, you can use the deleteProperty() method to delete a key from an Ember object. This method will not trigger observers or bindings associated with the property being deleted.[rating:acedb1b0-15fa-40e7-b0cf-c05382317baf]How to delete a key using a computed property in ember.js?You can delete a key in Ember.
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8 min readIn Ember.js, you can find objects in a model using a match by using the Ember.Array's findBy() method. This method allows you to search for an object in an array that matches a specific property value.First, you need to get the model data from your component or route using the Ember Data or store service. Then, you can use the findBy() method on the model data array to find the object that matches your criteria.
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4 min readTo test ember.js routes, you can use a testing framework like QUnit or Mocha along with the ember-qunit or ember-mocha testing helpers provided by Ember.js.To test routes, you can create unit tests that check if the route transitions correctly, if the correct model is loaded, and if the template renders as expected. You can use the visit() method to simulate visiting a route in your tests and check the behavior using assertions.
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6 min readIn an Ember.js app, authentication can be handled by using the Ember Simple Auth add-on, which provides a robust and flexible solution for implementing user authentication. The add-on allows you to easily create authentication mechanisms such as token-based authentication, session management, and authorization.To use Ember Simple Auth, you'll need to install the add-on and configure it according to your authentication requirements.
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4 min readIn Ember.js, XHR calls should typically be kept in the route's model hook or in a service. The model hook of a route is where you can fetch data from an API using XHR calls and set it as the model for that route, which will automatically be rendered in the template. Alternatively, you can create a service to handle all of your XHR calls. Services are reusable across different parts of your application and can provide a centralized place to manage and make XHR requests.
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5 min readIn Ember.js, when creating a child record and you need to get its parent ID, you can do so by maintaining a reference to the parent record. This can be achieved by either passing the parent record as a parameter when creating the child record, or setting the parent record on the child record after it has been created.For example, if you have a parentModel and a childModel with a belongsTo relationship, you can create a new child record like this: let parentRecord = this.get('store').
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5 min readIn Ember.js, bindings are used to create data bindings between properties of different objects. To set up bindings in Ember.js, you can declare them in two ways:In the template file using the {{bind}} helper, you can specify the paths of the properties you want to bind to. For example, {{bind someProperty}} will create a one-way binding from the current object's someProperty to the property of the same name in the target object.
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5 min readTo modularize Ember.js templates, you can break them down into smaller, reusable components. This can be achieved by creating individual template files for each component and then including these components in the main template file. By doing this, you can create a more organized and maintainable codebase.Another approach is to use Ember's built-in template helper functions, such as {{partial}} or {{render}}, to include partial templates within your main template.
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6 min readTo re-render a template using a cached property in Ember.js, you can make use of the @cached decorator. This decorator is used to create a property that returns a cached value, which will only be re-calculated if one of its dependencies changes.To implement this, you can define a cached property in your Ember component or controller using the @cached decorator on a getter method. This cached property can then be used in your template to display the cached value.
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5 min readIn Ember.js, handling HTTP request failures can be done by utilizing Ember's built-in error handling mechanisms.One approach is to use the catch method on the promise object returned by the ajax or $.ajax methods to handle any errors that occur during the HTTP request. This allows you to define a callback function that will be called if the request fails.Another method is to use the didError hook on the model or route object to handle errors that occur during the request.