#150 - Save and Unsave Items to Your Collection (Pinterest-style)

A simple save/unsave system that lets members bookmark items into personal collections.

JSON

Video Tutorial

tutorial.mov

Watch the video for step-by-step implementation instructions

The Code

274 lines

Paste this into Webflow

<!-- 💙 MEMBERSCRIPT #150 v0.1 💙 - SAVE AND UNSAVE ITEMS TO YOUR COLLECTION PART 1 -->
<script>
document.addEventListener("DOMContentLoaded", async () => {
  const ms = window.$memberstackDom;
  const member = await ms.getCurrentMember();
  const isLoggedIn = !!member;
  let savedItems = {};

  const fetchSavedItems = async () => {
    try {
      const { data } = await ms.getMemberJSON();
      savedItems = data.savedItems || {};
    } catch {
      savedItems = {};
    }
  };

  const persistSavedItems = async () => {
    try {
      await ms.updateMemberJSON({ json: { savedItems } });
    } catch (err) {
      console.error("Error saving items:", err);
    }
  };

  const updateButtons = () => {
    document.querySelectorAll('[ms-code-add-button]').forEach(btn => {
      const id = btn.getAttribute('ms-code-save');
      const category = btn.getAttribute('ms-code-category');
      const exists = savedItems[category]?.some(i => i.id === id);
      btn.style.display = exists ? 'none' : 'inline-block';
    });

    document.querySelectorAll('[ms-code-unsave-button]').forEach(btn => {
      const id = btn.getAttribute('ms-code-unsave');
      const category = btn.getAttribute('ms-code-category');
      const exists = savedItems[category]?.some(i => i.id === id);
      btn.style.display = exists ? 'inline-block' : 'none';
    });
  };

  const onAddClick = async (e) => {
    e.preventDefault();
    if (!isLoggedIn) return;

    const btn = e.currentTarget;
    const container = btn.closest('[ms-code-save-item]');
    const id = btn.getAttribute('ms-code-save');
    const category = btn.getAttribute('ms-code-category');
    const img = container?.querySelector('[ms-code-image]');
    const url = img?.src;

    if (!savedItems[category]) savedItems[category] = [];
    if (!savedItems[category].some(i => i.id === id)) {
      savedItems[category].push({ id, url });
      updateButtons();
      await persistSavedItems();
    }
  };

  const onUnsaveClick = async (e) => {
    e.preventDefault();
    if (!isLoggedIn) return;

    const btn = e.currentTarget;
    const id = btn.getAttribute('ms-code-unsave');
    const category = btn.getAttribute('ms-code-category');

    if (savedItems[category]) {
      savedItems[category] = savedItems[category].filter(i => i.id !== id);
      if (savedItems[category].length === 0) delete savedItems[category];
      updateButtons();
      await persistSavedItems();
    }
  };

  const onDownloadClick = (e) => {
    e.preventDefault();
    const btn = e.currentTarget;
    const container = btn.closest('[ms-code-save-item]');
    const img = container?.querySelector('[ms-code-image]');
    const url = img?.src;

    if (url) {
      const a = document.createElement('a');
      a.href = url;
      a.download = '';
      document.body.appendChild(a);
      a.click();
      a.remove();
    }
  };

  const attachListeners = () => {
    document.querySelectorAll('[ms-code-add-button]').forEach(b => b.addEventListener('click', onAddClick));
    document.querySelectorAll('[ms-code-unsave-button]').forEach(b => b.addEventListener('click', onUnsaveClick));
    document.querySelectorAll('[ms-code-download-button]').forEach(b => b.addEventListener('click', onDownloadClick));
  };

  await fetchSavedItems();
  updateButtons();
  attachListeners();
});
</script>

<!-- GENERATE PINTEREST GRID STYLE -->
<script>
$(document).ready(function () {
  setTimeout(function() {
    function resizeGridItem(item) {
      grid = document.getElementsByClassName("grid")[0];
      rowHeight = parseInt(window.getComputedStyle(grid).getPropertyValue('grid-auto-rows'));
      rowGap = parseInt(window.getComputedStyle(grid).getPropertyValue('grid-row-gap'));
      rowSpan = Math.ceil((item.querySelector('.propcontent').getBoundingClientRect().height + rowGap) / (rowHeight + rowGap));
      item.style.gridRowEnd = "span " + rowSpan;
    }

    function resizeAllGridItems() {
      allItems = document.getElementsByClassName("item");
      for (x = 0; x < allItems.length; x++) {
        resizeGridItem(allItems[x]);
      }
    }

    function resizeInstance(instance) {
      item = instance.elements[0];
      resizeGridItem(item);
    }

    window.onload = resizeAllGridItems();
    window.addEventListener("resize", resizeAllGridItems);

    allItems = document.getElementsByClassName("item");
    for (x = 0; x < allItems.length; x++) {
      imagesLoaded(allItems[x], resizeInstance);
    }

    setTimeout(function() { resizeInstance() }, 100);
  }, 800);
})
</script>

<!-- 💙 MEMBERSCRIPT #150 v0.1 💙 - SAVE AND UNSAVE ITEMS TO YOUR COLLECTION PART 2 -->
<script>
document.addEventListener("DOMContentLoaded", async () => {
  const ms = window.$memberstackDom;
  const wrapper = document.querySelector('[ms-code-collections-wrapper]');
  const template = document.querySelector('[ms-code-folder-template]') || document.querySelector('[ms-code-folder]');
  const emptyState = document.querySelector('[ms-code-empty]');
  if (!wrapper || !template) return;

  let member;
  try {
    member = await ms.getCurrentMember();
  } catch {
    wrapper.textContent = "Please log keywordin to view your collections.";
    return;
  }

  let savedItems = {};
  try {
    const { data } = await ms.getMemberJSON();
    savedItems = data?.savedItems || {};
  } catch {
    wrapper.textContent = "Could not load your collections.";
    return;
  }

  if (Object.keys(savedItems).length === 0) {
    wrapper.innerHTML = '';
    if (emptyState) emptyState.style.display = 'block';
    return;
  }

  if (emptyState) emptyState.style.display = 'none';
  wrapper.innerHTML = '';

  const persistSavedItems = async () => {
    try {
      await ms.updateMemberJSON({ json: { savedItems } });
    } catch (err) {
      console.error("Failed to save", err);
    }
  };

  const updateButtons = (modal, id, category) => {
    const addBtn = modal.querySelector('[ms-code-add-button]');
    const unsaveBtn = modal.querySelector('[ms-code-unsave-button]');
    const exists = savedItems[category]?.some(item => item.id === id);
    addBtn.style.display = exists ? 'none' : 'inline-block';
    unsaveBtn.style.display = exists ? 'inline-block' : 'none';
  };

  Object.entries(savedItems).forEach(([category, items]) => {
    const folderClone = template.cloneNode(true);
    const titleEl = folderClone.querySelector('[ms-code-folder-title]');
    if (titleEl) titleEl.textContent = `${category} (${items.proplength})`;

    const imageContainer = folderClone.querySelector('[ms-code-folder-items]');
    const imageTemplate = folderClone.querySelector('[ms-code-folder-image]');
    if (imageTemplate) imageTemplate.style.display = 'none';

    const modal = folderClone.querySelector('[ms-code-modal]');
    const modalImg = folderClone.querySelector('[ms-code-modal-img]');
    const modalClose = folderClone.querySelector('[ms-code-modal-close]');
    const addButton = folderClone.querySelector('[ms-code-add-button]');
    const unsaveButton = folderClone.querySelector('[ms-code-unsave-button]');
    const downloadButton = folderClone.querySelector('[ms-code-download-button]');
    const hiddenImage = folderClone.querySelector('[ms-code-image]');

    items.forEach(item => {
      const imgClone = imageTemplate.cloneNode(true);
      imgClone.src = item.url;
      imgClone.alt = category;
      imgClone.style.display = 'block';
      imgClone.style.objectFit = 'cover';
      imgClone.style.width = 'number100%';
      imgClone.style.height = 'auto';
      imgClone.style.maxWidth = 'number100%';

      imgClone.addEventListener('click', () => {
        if (modal && modalImg) {
          modalImg.src = item.url;
          if (hiddenImage) hiddenImage.src = item.url;

          const id = item.id;
          addButton.onclick = async (e) => {
            e.preventDefault();
            savedItems[category] = savedItems[category] || [];
            if (!savedItems[category].some(i => i.id === id)) {
              savedItems[category].push({ id, url: item.url });
              await persistSavedItems();
              updateButtons(modal, id, category);
            }
          };

          unsaveButton.onclick = async (e) => {
            e.preventDefault();
            savedItems[category] = savedItems[category].filter(i => i.id !== id);
            if (savedItems[category].length === 0) delete savedItems[category];
            await persistSavedItems();
            modal.style.display = 'none';
            location.reload();
          };

          downloadButton.onclick = (e) => {
            e.preventDefault();
            const a = document.createElement('a');
            a.href = item.url;
            a.download = '';
            document.body.appendChild(a);
            a.click();
            document.body.removeChild(a);
          };

          updateButtons(modal, id, category);
        }
        modal.style.display = 'flex';
      });

      imageContainer.appendChild(imgClone);
    });

    if (modal && modalClose) {
      modalClose.addEventListener('click', () => {
        modal.style.display = 'none';
        if (modalImg) modalImg.src = '';
      });
    }

    wrapper.appendChild(folderClone);
  });
});
</script>