Generating HTML select-option tags can be tedious. There can be many options, each with a value and text, and each one must determine if it is the currently selected option. Rails has a select helper method that make this process much simpler.
- [Instructor] In addition to the form helpers…we saw on the last movie,…Rails also offers us form helpers…to work with select option tags,…that is when a form needs a pulldown menu of options…that a user can choose from.…We will begin by looking at the simplest, the select helper.…The syntax of the select helper…is that it takes a series of arguments,…the first of which is the object we're working with,…the second is the attribute on that object.…Then, we have a list of choices.…These are the choices that the user…is going to select between.…After that would come a hash of options,…and a hash of any HTML options.…
The kinds of options you would provide for options…would be options for the select tag.…I've given you a list of what those could be,…as well as their default values.…If you needed to specify the value that should be selected,…you could do that, but it's going to default…to the object attribute's current value.…If you wanted to include a blank choice,…so that they could make no choice,…or if you wanted to prompt them before they make a choice,…
Author
Released
9/28/2016- Creating and configuring a new Ruby on Rails project
- Generating controllers and views
- Handling server requests
- Using different types of routes
- Rendering and viewing templates
- Generating migrations and models
- Creating, updating, and deleting records
- Finding records with queries
- Understanding relationship types
- Writing controllers for CRUD
- Working with layouts and helpers
- Managing application assets
- Building forms
- Validating data
- Authenticating users
Skill Level Beginner
Duration
Views
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Introduction
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Welcome1m 4s
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1. What Is Ruby on Rails?
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2. Get Started
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Create a project6m 45s
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File structure of a project4m 28s
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Configure a project10m 15s
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Access a project3m 38s
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Routes9m 12s
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Experiment on your own1m 17s
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Redirect actions6m 4s
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View templates7m 4s
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Instance variables3m 56s
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Links6m 11s
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URL parameters7m 24s
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4. Databases and Migrations
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Introduction to databases7m 53s
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Create a database2m 27s
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Migrations3m 4s
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Generate migrations4m 3s
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Generate models7m 58s
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Run migrations8m 22s
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Migration methods7m 47s
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Solve migration problems5m 41s
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5. Models and ActiveRecord
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Model naming5m 52s
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Model attributes2m 51s
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The Rails console3m 17s
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Create records4m 53s
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Update records3m 16s
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Delete records2m 29s
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Find records5m 48s
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Query methods: Conditions7m 39s
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Named scopes8m 26s
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6. Associations
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Relationship types7m 2s
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One-to-one associations9m 42s
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One-to-many associations7m 54s
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Many-to-many associations: Rich10m 17s
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Traverse a rich association5m 24s
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7. CRUD, REST, and Resourceful Routes
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CRUD6m 56s
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REST5m 51s
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Resourceful routes6m 54s
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Resourceful URL helpers4m 5s
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8. Controllers and CRUD
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Read action: Index6m 31s
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Read action: Show5m 22s
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Form basics5m 13s
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Create action: New4m 54s
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Create action: Create5m 27s
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Strong parameters6m 33s
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Update actions: Edit/update7m 53s
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Flash hash7m 28s
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9. Layouts, Partials, and View Helpers
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Layouts8m 33s
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Partial templates4m 43s
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Text helpers4m 32s
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Number helpers4m 22s
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Date and time helpers3m 39s
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Custom helpers5m 22s
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Sanitization helpers8m 53s
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10. Assets
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Asset pipeline4m 49s
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Stylesheets12m 1s
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JavaScript7m 33s
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Images6m 22s
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11. Forms
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Form helpers8m 35s
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Form options helpers8m 45s
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Date and time form helpers6m 16s
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Form errors7m 36s
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12. Data Validation
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Validation methods11m 37s
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Write validations12m 7s
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Validates method3m 15s
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Custom validations6m 12s
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13. Controller Features
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Cookies3m 10s
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Sessions6m 50s
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Controller filters10m 45s
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Logging7m 40s
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14. User Authentication
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Secure passwords8m 35s
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Login and logout8m 29s
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Restrict access7m 36s
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15. Improve the Simple CMS
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Challenge: AdminUser CRUD2m 44s
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Solution: AdminUser CRUD7m 56s
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Public area10m 35s
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Public area navigation6m 3s
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Nesting pages in subjects9m 44s
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Nesting sections in pages7m 37s
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Finishing touches3m 30s
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Conclusion
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Next steps1m 44s
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Video: Form options helpers