Merge pull request #4591 from blockscout/np-add-step-and-min-args

Add step and min value for txValue input

CHANGELOG.md

@@ -4,6 +4,7 @@
 - [#4579](https://github.com/blockscout/blockscout/pull/4579) - Write contract page: Resize inputs; Improve multiplier selector
 
 ### Fixes
+- [#4591](https://github.com/blockscout/blockscout/pull/4591) - Add step and min value for txValue input field
 - [#4586](https://github.com/blockscout/blockscout/pull/4586) - Fix floating tooltips on the token transfer family blocks
 - [#4587](https://github.com/blockscout/blockscout/pull/4587) - Enable navbar menu on Search results page
 - [#4582](https://github.com/blockscout/blockscout/pull/4582) - Fix NaN input on write contract page

apps/block_scout_web/assets/js/lib/smart_contract/write.js

@@ -150,6 +150,9 @@ function getTxValue ($functionInputs) {
   const WEI_MULTIPLIER = 10 ** 18
   const $txValue = $functionInputs.filter('[tx-value]:first')
   const txValue = $txValue && $txValue.val() && parseFloat($txValue.val()) * WEI_MULTIPLIER
-  const txValueStr = txValue && txValue.toString(16)
+  var txValueStr = txValue && txValue.toString(16)
+  if (!txValueStr) {
+    txValueStr = '0'
+  }
   return '0x' + txValueStr
 }

apps/block_scout_web/lib/block_scout_web/templates/smart_contract/_functions.html.eex

@@ -87,7 +87,7 @@
           <%= if Helper.payable?(function) do %>
             <div class="form-group pr-3">
               <input type="number" name="function_input" tx-value
-              data-toggle="tooltip" title='Amount in native token <<%= gettext("ETH")%>>' class="form-control form-control-sm address-input-sm mt-2" placeholder='value(<%= gettext("ETH")%>)'  />
+              data-toggle="tooltip" title='Amount in native token <<%= gettext("ETH")%>>' class="form-control form-control-sm address-input-sm mt-2" placeholder='value(<%= gettext("ETH")%>)' min="0" step="1e-18" />
             </div>
           <% end %>