I update my Article Model in ActiveAdmin page that has form with inputs :title, :body, :pages. Are there any ways to get values from those inputs in admin/Article.rb after pushing Update?
In admin/Article.rb
form do |f|
inputs "Article Info" do
input :title
input :body
input :pages
end
actions
end
For example i gonna use method:
def get_values_from_form
{title: ..., body: ..., pages: ...}
end
Unfortunately I've never seen that syntax, but as #jvillian said you can check your params.
For example, if your view prints this HTML tag:
<input id="person_name" name="person[name]" type="text" value="Henry"/>
In the incoming request you will have this params.
{'person' => {'name' => 'Henry'}}
So the action your form points to can easily retrieve the name this way:
def get_value_from_form
name = params[:person][:name]
end
You can find more info in the guidelines.
Related
How can I set a textfield in an ActiveAdmin form, who do not correspond to a table attribute ?
I need it to build an autocomplete behavior, to populate a list of checkboxes.
In case you want the value submitted back to your model, you can create a virtual attribute by adding attr_accessible, or explicitly define them in the model, as suggested in this answer:
def my_virtual_attr= (attributes)
#this will be evaluated when you save the form
end
def my_virtual_attr
# the return of this method will be the default value of the field
end
and you will need to add it to permit_params in the ActiveModel resource file.
In case you don't need the value submitted to the backend (needed for front-end processing for example), you can actually add any custom HTML to ActiveAdmin form, and this is an example code it:
ActiveAdmin.register MyModel do
form do |f|
f.semantic_errors # shows errors on :base
f.inputs "My Custom HTML" do
f.li "<label class='label'>Label Name</label><a class='js-anchor' href='#{link}'>Link Text</a><span></span>".html_safe
f.li "<label class='label'>Label 2 Name</label><input id='auto_complete_input'/>".html_safe
end
f.inputs "Default Form Attributes" do
f.inputs # builds an input field for every attribute
end
f.actions # adds the 'Submit' and 'Cancel' buttons
end
end
You can try to remove model prefix from the params name
ActiveAdmin.register MyModel do
form do |f|
f.input :custom, input_html: { name: 'custom' } # instead of 'my_model[custom]'
end
end
I am using Cocoon gem to do nested forms.
I have models like that:
# request.rb
has_many :filled_cartridges, inverse_of: :request, dependent: :destroy
accepts_nested_attributes_for :filled_cartridges, :reject_if => :all_blank, allow_destroy: true
#filled_cartridge.rb
belongs_to :request
Inside of my form_for #request i have nested form like that:
<div id="filled_cartridges">
<%= f.fields_for :filled_cartridges do |filled_cartridge| %>
<%= render 'filled_cartridge_fields', f: filled_cartridge %>
<% end %>
<div class="links">
<%= link_to_add_association 'add', f, :filled_cartridges %>
</div>
Where filled_cartridge_fields partial is like that:
<fieldset>
<%= f.text_field :cartridge_id %>
<%= f.hidden_field :_destroy %>
<%= link_to_remove_association "remove", f %>
</fieldset>
When i click on "add" it adds one more . When clicking on "remove" it removes that .
When i submit form the params for nested form look like that:
filled_cartridges_attributes: !ruby/hash:ActionController::Parameters
'0': !ruby/hash:ActionController::Parameters
cartridge_id: '12'
_destroy: 'false'
'1429260587813': !ruby/hash:ActionController::Parameters
cartridge_id: '2'
_destroy: 'false'
How do i access these params, and how to save them. How to traverse over these params and save them, or do Cocoon gem has some built in functionality? And finally how to check if these params are set? Since it is nested, it tricks me.
EDIT: My request_controllers#create:
def create
#request = Request.new( request_params )
# code for handling Request model
# here i want to handle nested model too (filled_cartridge)
#request.save
if #request.save
flash[:success] = "Заявка была добавлена"
redirect_to #request
else
render 'new'
end
end
EDIT2: my strong params:
def request_params
params.require(:request).permit(:name, :address, :phone, :mobile, :type, :description, :priority, :responsible, :price, :payed, :date, filled_cartridges_attributes: [:cartridge_id, :_destroy], :stype_ids => [], :social_media =>[])
end
In a recent project using cocoon I had to access the params of the attributes about to be saved. I figured a code in my create action in my controller. The trick is to understand how to retrieve the key of the hash of the attribute that is about to be saved. The key of the hash is that number '1429260587813' that is in your params
...
'1429260587813': !ruby/hash:ActionController::Parameters
cartridge_id: '2'
_destroy: 'false'
So you need to create a loop in your create action to retrieve this key using ruby hash method "keys". I do a loop because when using cocoon dynamic nested field I might create more than one nested attributes at once so it means more than one key to retrieve.
Here is a the code that worked for me, read my comments which explains the different steps of this code. I hope it will help you to adapt it to your needs.
#Here I just initialize an empty array for later use
info_arr = []
#First I check that the targeted params exist (I had this need for my app)
if not params[:recipe]["informations_attributes"].nil?
#z variable will tell me how many attributes are to be saved
z = params[:recipe]["informations_attributes"].keys.count
x = 0
#Initiate loop to go through each of the attribute to be saved
while x < z
#Get the key (remember the number from above) of the first hash (params) attribute
key = params[:recipe]["informations_attributes"].keys[x]
#use that key to get the content of the attribtue
value = params[:recipe]["informations_attributes"][key]
#push the content to an array (I had to do this for my project)
info_arr.push(value)
#Through the loop you can perform actions to each single attribute
#In my case, for each attributes I creates a new information association with recipe
#recipe.informations.new(title: info_arr[x]["title"]).save
x = x +1
end
end
This work to access cocoon nested attribute content and apply actions based on your need. This worked for me so you should be able to use this sample code and adapt it to your need.
I have two related models, Bunny has_many BunnyData (which belongs_to Bunny). From the show page of a particular Bunny (in Active Admin), I want to create a link to make a related BunnyData. I've tried a few different ways, with no success, and am currently trying this:
sidebar :data, :only => :show do
link_to 'New Data', new_admin_bunny_datum(:bunny_id => bunny.id)
end
The link being generated ends up as something like:
.../admin/bunny_data/new?bunny_id=5
But when you go to that page, the dropdown for Bunny is set to the blank default as opposed to showing the name of Bunny with ID 5.
Thanks in advance.
Rails namespaces form fields to the data model, in this case BunnyData. For the form to be pre-filled, any fields provided must also include the namespace. As an example:
ActiveAdmin.register Post do
form do |f|
f.inputs "Post Details" do
f.input :user
f.input :title
f.input :content
end
f.actions
end
end
The fields can be pre-filled by passing a hash to the path helper.
link_to 'New Post', new_admin_post_path(:post => { :user_id => user.id })
Which would generate the following path and set the form field.
/admin/posts/new?post[user_id]=5
In the case of BunnyData, it might be slightly different due to the singular and plural forms of datum. But that can be verified by inspecting the generated HTML to find the name attribute of the inputs.
I have a company model which can have many tags. It works fine, but in one occasion it does not work. The occasion is when company model validation fails. After :render => 'edit' it does not show tags in the view. I suspect the data-pre is not taking the data correctly. I would also like for tags to be preserved when solving validations.
I got this idea from here: http://railscasts.com/episodes/167-more-on-virtual-attributes
I use Input token control: http://loopj.com/jquery-tokeninput/
This is what I have in Company model regarding the tag_tokens:
before_save :save_tag_tokens
attr_writer :tag_tokens
attr_accessible :tag_tokens
def tag_tokens
#tag_tokens || tags.to_json(:only => [:id, :name])
end
def save_tag_tokens
if #tag_tokens
#tag_tokens.gsub!(/CREATE_(.+?)_END/) do
Tag.create!(:name => $1.strip.downcase).id
end
self.tag_ids = #tag_tokens.split(",")
end
end
Here is the code from the view:
<div class="input text no-border">
<% Tag.include_root_in_json = false %>
<%= company_form.label :tag_tokens, t('form.account.company.edit.company_tags_html')%>
<%= company_form.text_field :tag_tokens, :id => 'company_tag_tokens', "data-pre" => #company.tag_tokens%>
<p class="tip"><%= t('form.account.company.edit.tag_tip') %></p>
</div>
EDIT:
OK, so I see what is the problem with the above code.
When i load edit page data-pre contains this: data-pre="[{"id":1704,"name":"dump truck"}]". when I submit the form with validation error the data-pre contains: data-pre="1704".
if i change the code to this:
def tag_tokens
tags.to_json(:only => [:id, :name])
end
new tags that were not yet save to the company model are removed, because they are read from the DB everytime. How can I preserve the entered data between form transitions?
OK, I've written a solution, it might not be the nicest one, but it works to me! It parses the input token value to JSON format (when validation fails), which is used when loading the page. Under page load it just loads tags from DB.
def tag_tokens
if #tag_tokens
#if there is user info, parse it to json format. create an array
array = #tag_tokens.split(",")
tokens_json = []
#loop through each tag and check if it's new or existing
array.each do |tag|
if tag.to_s.match(/^CREATE_/)
#if new generate json part like this:
tag.gsub!(/CREATE_(.+?)_END/) do
tokens_json << "{\"id\":\"CREATE_#{$1.strip.downcase}_END\",\"name\":\"Add: #{$1.strip.downcase}\"}"
end
else
#if tag is already in db, generate json part like this:
tokens_json << "{\"id\":#{tag},\"name\":\"#{Tag.find_by_id(tag).name}\"}"
end
end
#encapsulate the value for token input with [] and add all tags from array
"[#{tokens_json.to_sentence(:last_word_connector => ',', :words_connector => ',', :two_words_connector => ',')}]"
else
#if there is no user input already load from DB
tags.to_json(:only => [:id, :name])
end
end
I have a model that has an attribute that is an Array. What's the proper way for me to populate that attribute from a form submission?
I know having a form input with a field whose name includes brackets creates a hash from the input. Should I just be taking that and stepping through it in the controller to massage it into an array?
Example to make it less abstract:
class Article
serialize :links, Array
end
The links variable takes the form of a an array of URLs, i.e. [["http://www.google.com"], ["http://stackoverflow.com"]]
When I use something like the following in my form, it creates a hash:
<%= hidden_field_tag "article[links][#{url}]", :track, :value => nil %>
The resultant hash looks like this:
"links" => {"http://www.google.com" => "", "http://stackoverflow.com" => ""}
If I don't include the url in the name of the link, additional values clobber each other:
<%= hidden_field_tag "article[links]", :track, :value => url %>
The result looks like this: "links" => "http://stackoverflow.com"
If your html form has input fields with empty square brackets, then they will be turned into an array inside params in the controller.
# Eg multiple input fields all with the same name:
<input type="textbox" name="course[track_codes][]" ...>
# will become the Array
params["course"]["track_codes"]
# with an element for each of the input fields with the same name
Added:
Note that the rails helpers are not setup to do the array trick auto-magically. So you may have to create the name attributes manually. Also, checkboxes have their own issues if using the rails helpers since the checkbox helpers create additional hidden fields to handle the unchecked case.
= simple_form_for #article do |f|
= f.input_field :name, multiple: true
= f.input_field :name, multiple: true
= f.submit
TL;DR version of HTML [] convention:
Array:
<input type="textbox" name="course[track_codes][]", value="a">
<input type="textbox" name="course[track_codes][]", value="b">
<input type="textbox" name="course[track_codes][]", value="c">
Params received:
{ course: { track_codes: ['a', 'b', 'c'] } }
Hash
<input type="textbox" name="course[track_codes][x]", value="a">
<input type="textbox" name="course[track_codes][y]", value="b">
<input type="textbox" name="course[track_codes][z]", value="c">
Params received:
{ course: { track_codes: { x: 'a', y: 'b', z: 'c' } }
I've also found out that if pass your input helper like this you will get an array of courses each one with its own attributes.
# Eg multiple input fields all with the same name:
<input type="textbox" name="course[][track_codes]" ...>
# will become the Array
params["course"]
# where you can get the values of all your attributes like this:
params["course"].each do |course|
course["track_codes"]
end
I just set up a solution using jquery taginput:
http://xoxco.com/projects/code/tagsinput/
I wrote a custom simple_form extension
# for use with: http://xoxco.com/projects/code/tagsinput/
class TagInput < SimpleForm::Inputs::Base
def input
#builder.text_field(attribute_name, input_html_options.merge(value: object.value.join(',')))
end
end
A coffeescrpt snippet:
$('input.tag').tagsInput()
And a tweak to my controller, which sadly has to be slightly specific:
#user = User.find(params[:id])
attrs = params[:user]
if #user.some_field.is_a? Array
attrs[:some_field] = attrs[:some_field].split(',')
end
I had a similar issue, but wanted to let the user input a series of comma separated elements as the value for the array.
My migration uses rails new ability (or is it postrges' new ability?) to have an array as the column type
add_column :articles, :links, :string, array: true, default: []
the form can then take this input
<%= text_field_tag "article[links][]", #article.links %>
and it means the controller can operate pretty smoothly as follows
def create
split_links
Article.create(article_params)
end
private
def split_links
params[:article][:links] = params[:article][:links].first.split(",").map(&:strip)
end
params.require(:article).permit(links: [])
Now the user can input as many links as they like, and the form behaves properly on both create and update. And I can still use the strong params.
For those who use simple form, you may consider this solution. Basically need to set up your own input and use it as :array. Then you would need to handle input in your controller level.
#inside lib/utitilies
class ArrayInput < SimpleForm::Inputs::Base
def input
#builder.text_field(attribute_name, input_html_options.merge!({value: object.premium_keyword.join(',')}))
end
end
#inside view/_form
...
= f.input :premium_keyword, as: :array, label: 'Premium Keyword (case insensitive, comma seperated)'
#inside controller
def update
pkw = params[:restaurant][:premium_keyword]
if pkw.present?
pkw = pkw.split(", ")
params[:restaurant][:premium_keyword] = pkw
end
if #restaurant.update_attributes(params[:restaurant])
redirect_to admin_city_restaurants_path, flash: { success: "You have successfully edited a restaurant"}
else
render :edit
end
end
In your case just change :premium_keyword to the your array field
I had some trouble editing the array after implementing this for my new.html.erb, so I'll drop my solution to that problem here:
Edit a model property of type array with Rails form?