I'm not quite sure what the correct terms are, but what I'm trying to do is in a form (preferably using the simple_form gem) have one of the inputs, :maximum, use both a text field and select box. The user would type in the text box a number, and then select from a dropdown box of hours, days, or months. So 21 days, 3 months, 3 hours, etc. When the form was submitted I would convert that to days and store it in the database. I know how to change the input type in simple_form, but is it possible to have two inputs for one variable?
Sure :) Here is my idea:
First, you define accessors in your user model:
attr_accessor :thing, :another_thing, :and_another_thing
Then in your view, 'inside' form_for helper, you could write for example:
<%= form.input :thing, :as => :boolean %>
<%= form.input :another_thing, :as => :text %>
...or whatever you want. (Note: I am using formtastic here. You should consider using Rails methods if you're not using formtastic gem. )
Finally, you define a callback in you user model:
before_create :build_my_fancy_record
def build_my_fancy_record
self.storage_field = "#{thing} #{another_thing}"
end
Related
I am not very familiar with ActiveAdmin or rails in general, so sorry if I use some incorrect phrasing.
I have a model for an Athlete, which has an attribute "notes". This is described in the permit_params of the athlete.rb.
On an additional page, I have the following:
f.input :athlete, :collection => Athlete.all.sort_by(&:last_name), :required => true
I would like to find a way to, if the :notes is not empty, display it.
If I could display it as a "row" on the form, that would be great.
Thanks!
So I have a CareerEntry model that has a fullintern attribute, which is a string that is supposed to specify whether the entry represents an internship or a full-time position. I limit the values that can appear in this attribute as follows:
validates_inclusion_of :fullintern, :in => ["Internship", "Full-time"]
However, in ActiveAdmin, the part in the edit form that deals with the fullintern attribute still has a text field. How do I make it a dropdown box where the admin can select either "Internship" or "Full-time"?
Thanks.
You can use Formtastic's input helpers to use a select input:
form do |f|
f.inputs "Details" do
f.input :fullintern, as: :select, collection: ["Internship", "Full-time"]
end
f.actions
end
See Formtastic's usage section for the full set of native capabilities.
I have two models User and Category that have a HABTM association.
I would like to generate checkboxes from a collection of Category items on my view, and have them associated with the current_user.
How do I do that?
Thanks.
P.S. I know that I can do the equivalent for a dropdown menu with options_from_collection_for_select. I also know that Rails has a checkbox_tag helper. But not quite sure how to do both of them. I know I can just do it manually with an each loop or something, but am wondering if there is something native to Rails 3 that I am missing.
Did you check out formtastic or simple_form
They have helpers to write your forms more easily, also to handle simple associations.
E.g. in simple_form you can just write
= simple_form_for #user do
= f.association :categories, :as => :check_boxes
In form_tastic you would write
= simple_form_for #user do
= f.input :categories, :as => :check_boxes
Hope this helps.
You can use a collection_select and feed it the options. Assuming you have a form builder wrapped around a user instance, you can do something like this:
form_for current_user do |f|
f.collection_select(
:category_ids, # the param key, so params[:user][:category_ids]
f.object.categories, # the collection of items in the list
:id, # option value
:name # option string
)
end
You may want to pass the :multiple => true option on the end if needed.
I have a Post model which I'm accessing through ActiveAdmin. It's also taggable using the acts_as_taggable_on gem. So the admin can add, edit or delete tags from a specific Post.
The normal way to add the tagging functionality for the resource in your admin panel is by doing this in admin/posts.rb:
ActiveAdmin.register Post do
form do |f|
f.inputs "Details", :multipart => true do
f.input :tag_list
# and the other irrelevant fields goes here
end
f.buttons
end
end
However, I want to have the tags selected from a multiple select form field and not being entered manually in a text field (like it is with the code above). So I've tried doing this:
f.input :tag_list, :as => :select,
:multiple => :true,
:collection => ActsAsTaggableOn::Tag.all
but it doesn't work as expected. This actually creates new tags with some integer values for names and assigns them to that Post. Someone told me that extra code is needed for this to work.
Any clues on how this is done? Here's my model just in case: http://pastie.org/3911123
Thanks in advance.
Instead of
:collection => ActsAsTaggableOn::Tag.all
try
:collection => ActsAsTaggableOn::Tag.pluck(:name)
Setting the collection to Tag.all is going to tag your posts with the tag's ID, since that's how tags are identified by default (that's where the integer values for names are coming from). map(&:name) tells the form builder to use the tag's name instead.
Could not find the answer to the question on how to split forms in rails in multiple smaller forms.
Say you have a big form with
firstname
lastname
gender
age
email
country
city
state
I have a validate_presence for all these fields. So when I create several forms like:
= simple_form_for #profile, :wrapper => :inline do |f|
= f.label "firstname"
= f.select :firstname
without all the values from the top list (first name,last name,etc) I get errors because the splitter form does not contain those values and they need to be present at first to make this work at all.
What would be a good way to have several forms but with only a portion of the values and update them without getting the issue described above?
If you want the ability to update pieces of the model then you need to split the validations into pieces as well.
One way to do it is to have a virtual attribute in your model that gets set by a hidden field in each form. E.g you may have a form:
= simple_form_for #profile, :wrapper => :inline do |f|
= f.hidden :form, :input_html => {:value => 'names'}
= f.label "firstname"
= f.select :firstname
Then in your model:
class Profile
attr_accessor :form
validates :firstname, :presence => true, :if => lambda { |o| o.form == "names" }
end
The validation will run only if the change was submitted from the right form.
Check out conditional validation guide: http://guides.rubyonrails.org/active_record_validations_callbacks.html#conditional-validation for more details.
Other way is a multistep form as suggested by apneadiving: http://railscasts.com/episodes/217-multistep-forms This uses the same technique as in the first example by having a current_step attribute, but the progression is linear.
You're asking for a multi step form I guess.
Look at this screencast, you'll find conditional validations which are the way to proceed.