make crop_suggest.js more abstract so it works for other resources, not just planting

app/assets/javascripts/crop_suggest.js.coffee

@@ -0,0 +1,21 @@
+jQuery ->
+  if el = $( '.crop-suggest' )
+    el.autocomplete
+      minLength: 1,
+      source: Routes.crops_search_path(),
+      focus: ( event, ui ) ->
+        el.val( ui.item.name )
+        $( "[id$='_crop_id']" ).val( ui.item.id )
+        false
+      select: ( event, ui ) ->
+        el.val( ui.item.name )
+        $( "[id$='_crop_id']" ).val( ui.item.id )
+        false
+      autoFocus: true
+    if el.data( 'uiAutocomplete' )
+      el.data( 'uiAutocomplete' )._renderItem = ( ul, item ) ->
+        $( '<li></li>' )
+          .data( 'item.autocomplete', item )
+          .append( "<a>#{item.name}</a>" )
+          .appendTo( ul )
+

app/assets/javascripts/plantings.js.coffee

@@ -4,25 +4,3 @@
 
 jQuery ->
   $('.add-datepicker').datepicker('format' : 'yyyy-mm-dd')
-
-jQuery ->
-  if el = $( '#crop' )
-    el.autocomplete
-      minLength: 1,
-      source: Routes.crops_search_path(),
-      focus: ( event, ui ) ->
-        el.val( ui.item.name )
-        $( '#planting_crop_id' ).val( ui.item.id )
-        false
-      select: ( event, ui ) ->
-        el.val( ui.item.name )
-        $( '#planting_crop_id' ).val( ui.item.id )
-        false
-      autoFocus: true
-    if el.data( 'uiAutocomplete' )
-      el.data( 'uiAutocomplete' )._renderItem = ( ul, item ) ->
-        $( '<li></li>' )
-          .data( 'item.autocomplete', item )
-          .append( "<a>#{item.name}</a>" )
-          .appendTo( ul )
-

app/views/harvests/_form.html.haml

@@ -9,7 +9,8 @@
   .control-group
     = f.label 'What did you harvest?', :class => 'control-label'
     .controls
-      = collection_select(:harvest, :crop_id, Crop.all, :id, :name, :selected => @harvest.crop_id || @crop.id)
+      = text_field_tag(:crop, @harvest.crop.nil? ? "" : @harvest.crop.name, :class => 'crop-suggest')
+      = f.hidden_field(:crop_id)
       = collection_select(:harvest, :plant_part_id, PlantPart.all, :id, :name, :selected => @harvest.plant_part_id)
       %span.help-block
         Can't find what you're looking for?

app/views/plantings/_form.html.haml

@@ -9,7 +9,7 @@
   .control-group
     = f.label :crop, 'What did you plant?', :class => 'control-label'
     .controls
-      = text_field_tag(:crop, @planting.crop.nil? ? "" : @planting.crop.name)
+      = text_field_tag(:crop, @planting.crop.nil? ? "" : @planting.crop.name, :class => 'crop-suggest')
       = f.hidden_field(:crop_id)
       %span.help-inline
         Can't find what you're looking for?