Class: Niles::FormBuilder

Inherits:
Object
  • Object
show all
Defined in:
lib/niles/form_builder.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(helpers, resource, form_options = {}) ⇒ FormBuilder

Returns a new instance of FormBuilder.



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# File 'lib/niles/form_builder.rb', line 7

def initialize(helpers, resource, form_options = {})
  @helpers = helpers
  @resource = resource
  @resource_name = resource.class.to_s.singularize.underscore
  @form_options = form_options
end

Instance Attribute Details

#form_options ⇒ Object (readonly)

Returns the value of attribute form_options.



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# File 'lib/niles/form_builder.rb', line 5

def form_options
  @form_options
end

#helpers ⇒ Object (readonly)

Returns the value of attribute helpers.



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# File 'lib/niles/form_builder.rb', line 5

def helpers
  @helpers
end

#resource ⇒ Object (readonly)

Returns the value of attribute resource.



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# File 'lib/niles/form_builder.rb', line 5

def resource
  @resource
end

Instance Method Details

#input(name, options = {}) ⇒ Object 



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# File 'lib/niles/form_builder.rb', line 14

def input(name, options = {})
  name = name.to_s

  # Set default options
  options = {
    label: "%s:" % label_text(name),
    value: resource.send(name)
  }.merge(options)

  # FIXME
  options[:as] ||= case options[:value]
    when Date           then :date
    when DateTime, Time then :datetime
    else :text
  end

  # Set default options for the input field
  field_options = {
    name: "%s[%s]" % [@resource_name, name]
  }
  unless (placeholder = options.delete(:placeholder) || placeholder(name)).blank?
    field_options[:placeholder] = placeholder
  end

  # Set default options for the wrapper element
  wrapper_options = {
    class: "input #{options[:as]}"
  }
  wrapper_options[:class] << " with_error" if resource.errors[name].any?

  # Output wrapper tag with contents
  helpers.html_tag :div, wrapper_options do
    String.new.tap do |s|
      # Add label
      s << helpers.html_tag(:label) { options[:label] }

      # Add actual input field
      case options[:as].to_sym
      when :textarea
        s << helpers.html_tag(:textarea, field_options) { helpers.preserve(helpers.escape_html(options[:value])) }
      when :datetime
        s << helpers.date_time_select(field_options.delete(:name), value: options[:value])
      else
        s << helpers.html_tag(:input, field_options.merge(type: 'text', value: options[:value]))
      end

      # Add error message, if necessary
      if @resource.errors[name].any?
        s << helpers.html_tag(:div, :class => "error") { @resource.errors[name].first }
      end
    end
  end
end

#label_text(name) ⇒ Object 



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# File 'lib/niles/form_builder.rb', line 68

def label_text(name)
  helpers.translate("forms.#{@resource_name}.labels.#{name}", :default => name.humanize)
end

#placeholder(name) ⇒ Object 



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# File 'lib/niles/form_builder.rb', line 72

def placeholder(name)
  helpers.translate("forms.#{@resource_name}.placeholders.#{name}", :default => "")
end

#submit(label = nil) ⇒ Object 



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# File 'lib/niles/form_builder.rb', line 76

def submit(label = nil)
  label ||= (resource.new_record? ? 'Create' : 'Update')
  helpers.html_tag(:input, type: 'submit', value: label)
end