How to set up form for a hash in Rails?
Solution 1
Based on this article you should change the name in text_field_tag to
<% @hash.keys.each do |key| %>
<div class="field">
<%= f.label key %><br />
<%= text_field_tag "hash[" + key + "]", @hash[key] %>
</div>
<% end %>
Solution 2
My answer is not strictly on topic but I really recommend you to take a look at http://railscasts.com/episodes/219-active-model. You could use ActiveModel APIs to simulate a model object with Rails 3. Doing that you could simply do something like
<%= form_for(@object) %>
and leaving the populating of your object to Rails APIs.
B Seven
Status: Hood Rails on HTTP/2: Rails HTTP/2 Rack Gems: Rack Crud Rack Routing Capybara Jasmine
Updated on June 08, 2022Comments
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B Seven almost 2 years
I have some data associated with a model that is in a hash. The hash is generated in the controller:
@hash
.What is the proper way to create a form for this data?
I came up with the following code for the view:
<% @hash.keys.each do |key| %> <div class="field"> <%= f.label key %><br /> <%= text_field_tag "hash_" + key, @hash[key] %> </div> <% end %>
This generates the form, but it creates each hash item as a separate variable in the form. This doesn't seem to be the proper way to submit the data back. I would like to get the data back as a hash, and access it with
params[:hash]
.What is the best way to do this?
Working in Rails 3.07, Ruby 1.9.2.
Thanks.
EDIT: I should have made this clear. This code is inside of a form generated for a model. So, the form needs to submit all the fields for the model, plus the above hash.
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m_x over 12 yearsagreed, but maybe this hash is a symptom of bad practice. Asked him for more precision.
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m_x over 12 yearsmore info on this here: undestanding parameter naming conventions
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B Seven over 12 yearsInteresting. I'm not sure if that approach will work because this code is actually inside of a form generated for a model.
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lucapette over 12 yearsThen you could try to use to use a fields_for... to be honest I haven't tried it but I don't see any particular problem.