I have a form that the user is going to interact with, by updating, etc. The data is being pulled from the database, so that the user can see previous data and add new ones as well. So basically when I try to execute the code below, I get an error, saying that there is no method...
#display = Sales.find(:all, :conditions => ['year =?', _year])
render :partial => "display" #which renders the table that has the form in it.
<td><%= text_field 'display', 'price'%></td> #is the input field
I have price as a column in my database :S
Thanks for the help guys! Merry X-mas
The display variable is an Array. You'll need to pass the results of the Sales.find in the :collection parameter of render partial:
#display = Sales.find(:all, :conditions => ['year =?', _year])
render :partial => "display", :collection => #display
That should render the partial once for each item that is returned by Sales.find
Related
There's this button / link in my web app. It's a button for a pizza - margherita with price, ingredients, and category, all already loaded to the db. Clicking this button loads the item's id to params, which is then used to find the object.
I want the click to launch the following chain of events:
Load the id
Find the object by id
Instantly render the object and its attributes in adjacent div on the same site.
Is this possible without JavaScript, just Ruby on Rails?
I am stuck at point 3. I have an idea, but incomplete. Please, give me a hint.
PS. My idea is to render views for index and show in separate divs next to one another.
#NickM, I added your code and it's throwing ActionController::UnknownFormat error, pointing at respond_to do |format| in show_pizza method.
Here's my pizzas/index.html.haml:
%h1= t :all_pizzas
- #pizzas.each do |pizza|
= render pizza
.orders
%h1 Orders
And pizzas/_pizza.html.haml:
%tr
= link_to pizza.name, show_a_pizza_path(pizza.id), :method => :post
%br/
I am getting this error upon clicking the link in _pizza.html.erb. My show_pizza.js is now:
pizza_div = $("#orders");
pizza_div.html( "<%= j render( :partial => 'pizzas/pizza', :locals => { :pizza => #pizza } ) %>" );
What am I missing? Sorry, I don't know js.
The short answer is no. When the link is clicked you will need to either render another page or handle the data returned by the controller with Javascript. The best option would be to set up an action that responds with JSON and parse what you get back on the front end.
Even after your P.S. you will have to handle the response from the server with Javascript, unless you are okay with rendering a new page. You need to post some code, preferably routes and controller action. This would also work:
<%= link_to("Show Pizza", show_a_pizza_path(#pizza.id), :method => :post, :data => {:remote => true}) %>
routes.rb
post 'show_pizza/:id' => "pizzas#show_pizza", :as => :show_a_pizza
pizzas_controller.rb
def show_pizza
#pizza = Pizza.find(params[:id])
respond_to do |format|
format.js
end
end
views/pizzas/show_pizza.js
pizza_div = $("#the_name_of_your_div");
pizza_div.html( "<%= j render( :partial => 'pizzas/pizza', :locals => { :pizza => #pizza } ) %>" );
and then put the pizza markup in /views/pizzas/_pizza.html.erb
this is my simple code
<%= render :partial => '/manage/regions/get_by_country', :locals => {:country_id => #last_search.country_id} %>
the #last_search.country_id has value (checked)
but while rendering the control seems that the country_id is null or empty
what i cant understand is that i use same syntax in another control and work us expected
i try also add hardcoded country_id
<%#id = 118%>
<%= render :partial => 'manage/regions/get_by_country', :locals => {:country_id => #id} %>
<%end%>
and not working
the control rendering but the country_id is null
OK i got the problem
the variable on the partial named #country_id
and i passed country_id (with no the '#')
i actually don't know why in one controller its work and on the other it doesn't work
but when i change the variable on the partial to country_id (with no the '#')
its work as expected
thanks
Okay so im new to this site but this is what I have:
Report.rb
def self.search(search)
if search
where('JOBLETTER_CD_NUMBER LIKE ? AND DATE LIKE? AND CUST LIKE ?', "%#{search}%")
else
scoped
end
end
end
index.html.erb
select_tag "search", options_for_select([ "Job Letter and CD #", "Date", "Cust", "Job", "Date shipped", "Date billed", "Billed by" ], params[:search])
form_tag reports_path, :method => 'get' do
text_field_tag :search, params[:search], :class=> "form-search", :align => "right"
<%= submit_tag "Search", :JOBLETTER_CD_NUMBER => nil, :class => "btn btn-success", :align => "right"
reports controller
def index
#report = Report.paginate(:per_page => 1, :page => params[:page])
#report = Report.search(params[:search]).paginate(:per_page => 1, :page => params[:page])
respond_to do |format|
format.html # index.html.erb
format.json { render :json => #views }
end
end
The only field it will search is the Job Letter and CD # field I need it to allow me to search whatever is selected in the drop down box. Btw I am using bootstrap fro js and css functions.
Your query has 3 placeholders ? but passed only one argument "#{search}" - if you run it like that, what you really should be getting is an exceptions stating
ActiveRecord::PreparedStatementInvalid: wrong number of bind variables (1 for 3) ...
Also, your select_tag is outside the form, so it won't be passed to the controller at all. If you move it into the form, you'd have to rename (e.g. to column) it since the name search is already used by the text field. Then you could pass both the column and the search parameters to your search function to construct the query.
HOWEVER, this is not safe, since nothing prevents a user to pass in any other column by manipulating the post request, and since you can't use placeholders for column names, there's a danger of SQL injection as well.
There are many solutions out there to construct searches, no need to reinvent the wheel. Take a look at the ransack gem. Here's a recent Railscast on how to use it.
This is how you use autocomplete with jQuery Tokeninput and ActsAsTaggableOn.
In my situation i am using a nested form but it shouldnt matter. Everything below is code that works.
Code
Product Model:
attr_accessible :tag_list # i am using the regular :tag_list
acts_as_taggable_on :tags # Tagging products
Products Controller:
#1. Define the tags path
#2. Searches ActsAsTaggable::Tag Model look for :name in the created table.
#3. it finds the tags.json path and whats on my form.
#4. it is detecting the attribute which is :name for your tags.
def tags
#tags = ActsAsTaggableOn::Tag.where("tags.name LIKE ?", "%#{params[:q]}%")
respond_to do |format|
format.json { render :json => #tags.map{|t| {:id => t.name, :name => t.name }}}
end
end
Routes:
# It has to find the tags.json or in my case /products/tags.json
get "products/tags" => "products#tags", :as => :tags
Application.js:
$(function() {
$("#product_tags").tokenInput("/products/tags.json", {
prePopulate: $("#product_tags").data("pre"),
preventDuplicates: true,
noResultsText: "No results, needs to be created.",
animateDropdown: false
});
});
Form:
<%= p.text_field :tag_list,
:id => "product_tags",
"data-pre" => #product.tags.map(&:attributes).to_json %>
Issue 1(SOLVED)
Must have the line:
format.json { render :json => #tags.collect{|t| {:id => t.name, :name => t.name }}}
Note - You can use #tags.map here as well and you dont have to change the form either.
Below are the 2 issues on why you needed to do this:
I have the following Tag: {"id":1,"name":"Food"}. When I save a Product, tagged "Food", it should save as ID: 1 when it searches and finds the name "Food". Currently, it saves a new Tag with a new ID that references the "Food" ID, i.e. {"id":19,"name":"1"}. Instead, it should be finding the ID, showing the name, and doing a find_or_create_by so it doesn't create a new Tag.
Issue 2(SOLVED)
When I go to products/show to see the tags by doing <%= #product.tag_list %>. The name appears as "Tags: 1", when it really should be "Tags: Food".
How can I fix these issues?
You should define a route in your routes.rb which should handle products/tags path. You can define it like:
get "products/tags" => "products#tags", :as => :tags
Thus should give you a tags_path helper which should evaluate to /products/tags. This should get rid of the errors you mentioned in the question. Be sure to add this route before defining resources :product in your routes.rb
Now onto acts-as-taggable-on, I haven't used this gem, but you should look at method all_tag_counts documentation. Your ProductsController#tags method will need some changes on the following lines. I am not sure if its exactly what would be required, as I use Mongoid and can't test it out.
def tags
#tags = Product.all_tag_counts.(:conditions => ["#{ActsAsTaggableOn::Tag.table_name}.name LIKE ?", "%#{params[:q]}%"])
respond_to do |format|
format.json { render :json => #tags.collect{|t| {:id => t.name, :name => t.name } }
end
end
little add-on:
If you want to create the tags on the fly, you could do this in your controller:
def tags
query = params[:q]
if query[-1,1] == " "
query = query.gsub(" ", "")
Tag.find_or_create_by_name(query)
end
#Do the search in memory for better performance
#tags = ActsAsTaggableOn::Tag.all
#tags = #tags.select { |v| v.name =~ /#{query}/i }
respond_to do |format|
format.json{ render :json => #tags.map(&:attributes) }
end
end
This will create the tag, whenever the space bar is hit.
You could then add this search setting in the jquery script:
noResultsText: 'No result, hit space to create a new tag',
It's a little dirty but it works for me.
There is a bug in Application.js code. There is an extra ) after "/products/tags.json". Remove the extra ). The code should be:
$("#product_tags").tokenInput("/products/tags.json", {
prePopulate: $("#product_tags").data("pre"),
preventDuplicates: true,
noResultsText: "No results, needs to be created.",
animateDropdown: false
});
I don't know if this is the entirety of your error, but you are not hitting the proper URL with the tokenInput plugin.
This
$("#product_tag_list").tokenInput("/products/tags.json"), {
should be
$("#product_tag_list").tokenInput("/products.json"), {
As I said, I don't know if this is the only problem you are having, but if you change this, does it work?
EDIT:
I have never used ActsAsTaggableOn. Does it create a Tag model for you to use?
From the looks of it on github, if you wanted to query all tags, you might have to use its namespace as opposed to just Tag, meaning ActsAsTaggableOn::Tag. For example, you can see how they access Tags directly in some of the specs.
I had problems with editing the tags if for example the model failed to validate,
I changed
<%= p.text_field :tag_list,
:id => "product_tags",
"data-pre" => #product.tags.map(&:attributes).to_json %>
to
<%= p.text_field :tag_list,
:id => "product_tags",
"data-pre" => #product.tag_list.map {|tag| {:id => tag, :name => tag } }.to_json %>
If the form failed to validate on first submission, it was creating tags as the ID's of the tags it had created on subsequent submissions.
Two notes: if you're getting the tags changed by numbers on the POST request, use:
tokenValue: "name"
And if you're trying to add non-existent tags, use (undocumented):
allowFreeTagging: true
I'm trying to use the scriptaculous helper method sortable_element to implement a drag-and-drop sortable list in my Rails application. While the code for the view looks pretty simple, I'm really not quite sure what to write in the controller to update the "position" column.
Here's what I've got in my view, "_show_related_pgs.erb":
<ul id = "interest_<%=#related_interest.id.to_s%>_siblings_list">
<%= render :partial => "/interests/peer_group_map", :collection => #maps, :as => :related_pg %>
</ul>
<%= sortable_element("interest_"+#related_interest.id.to_s+"_siblings_list", :url => {:action => :resort_related_pgs}, :handle => "drag" ) %>
<br/>
And here's the relevant line from the partial, "interests/peer_group_map.erb"
<li class = "interest_<%=#related_interest.id.to_s%>_siblings_list"
id = "interest_<%=related_pg.interest_id.to_s%>_siblings_list_<%=related_pg.id.to_s%>">
The Scriptaculous UI magic works fine with these, but I am unsure as to how to change the "position" column in the db to reflect this. Should I be passing the collection #maps back to the controller and tell it to iterate through that and increment/decrement the attribute "position" in each? If so, how can I tell which item was moved up, and which down? I couldn't find anything specific using Chrome dev-tools in the generated html.
After each reordering, I also need to re-render the collection #maps since the position is being printed out next to the name of each interest (I'm using it as the "handle" specified in my call to sortable_element() above) - though this should be trivial.
Any thoughts?
Thanks,
-e
I typically create a sort action in my controller that looks like this:
def sort
order = params[:my_ordered_set]
MyModel.order(order)
render :nothing => true
end
Don't forget to add a route:
map.resources :my_model, :collection => { :sort => :put }
Now, on MyModel I add a class method that updates all of the sorted records with one query (this only works in mysql, I think..):
def self.order(ids)
update_all(
['ordinal = FIND_IN_SET(id, ?)', ids.join(',')],
{ :id => ids }
)
end
The single query method comes from Henrik Nyh.